מחקרים פורצי דרך
מחקר חדש של פרופ’ רונית שריד פורסם ב-Molecular Sciences
Prof. Ronit Sarid and her PhD student, Odelia Orbaum-Harel, recently published a comprehensive review paper on the UL24 protein family, which is conserved across all subfamilies of Orthoherpesviridae. This family of proteins plays crucial roles in viral replication, host-virus interactions, and pathogenesis. Understanding the molecular mechanisms and interactions of UL24 proteins is essential for unraveling the complex dynamics between herpesviruses and their hosts. This review offers a detailed comparative overview of current knowledge on UL24 family members, covering their conservation, expression patterns, cellular localization, and functional roles during viral infection. This work highlights the significance of UL24 proteins in herpesvirus biology and their potential functions, paving the way for future research in this field. For more insights, check out the review https://lnkd.in/eBrVApgJ
מחקר חדש של פרופ' דניאל נסים פ
ורסם ב- Materials Chemistry C
Prof. Gilbert Daniel Nessim and his team have published their exciting research on high-performance catalysts for electrochemical water splitting in the Journal of Materials Chemistry A. This work is a significant step towards efficient and sustainable hydrogen production.
Their innovative one-step chemical vapor deposition (CVD) synthesis produces freestanding electrodes with nickel single-atom catalysts (SACs) on sulfur-doped carbon nanofibers (CNFs), termed SACs@nanocarbon. This method simplifies the production process, which traditionally involves multiple lengthy and costly steps.
Key highlights:
- Exceptional performance in oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)
- Over 20,000 cycles with minimal change in overpotential
- Low onset overpotentials: 305 mV at 10 mA cm−2 (OER) and 40 mV at 17 mA cm−2 (HER)
- Improved performance over cycling
This novel synthesis could pave the way for high-performance, non-platinum group metal electrodes in various electrocatalytic applications. Additionally, the temperature-controlled delamination technique used could lead to the synthesis of new materials. For more insights, visit https://lnkd.in/daREYB62
מחקר חדש של פרופ' מוטי פרידמ
ן פורסם ב- Nature communications
Prof. Moti Fridman and his team have made exciting discoveries in the dynamics of complex networks, specifically among violin players. Their recent study in Nature Communications sheds light on how human networks adapt and find new stable states amidst changing conditions like conflicts, climate changes, or disasters.
Unlike non-human networks, human networks can adjust coupling strength or tempo, making them more robust and resilient against perturbations. The team observed unique dynamics such as high-order vortex states, oscillation death, and amplitude death.
This research has far-reaching implications for politics, economics, pandemic control, decision-making, and predicting network dynamics with AI. To learn more, visit https://rdcu.be/dYzn2
מחקר חדש של פרופ' דוד זייתון פורסם ב- Catalysis
Prof. David Zitoun and his team have made significant progress in the field of electrocatalysis. Their recent work, published in ACS Catalysis, explores the effects of nanoconfinement on hydrogen oxidation reactions (HOR) in an alkaline medium. By designing a strongly confined system using carbon nanotubes (CNTs) with an inner diameter of 14 Å filled with a Pt single-atom catalyst (SAC), they demonstrated that nanoconfinement can slow down the kinetics of HOR, resulting in a higher overpotential compared to nonconfined Pt catalysts. Interestingly, this effect is less pronounced in CNTs with larger diameters and does not occur in acidic mediums. This exciting research highlights the impact of nanoconfinement on reaction kinetics and mass transport parameters, breaking the scaling laws of surface activity in electrocatalysis. Density functional theory calculations performed in collaboration with Prof. Ilya Grinberg (Chemistry Department) further explain the energy barrier for OH− to diffuse in CNTs. To dive deeper into their findings, check out the full publication https://lnkd.in/dJNuAcr8
מחקר חדש של פרופ' 
רחלה פופובצר פורסם ב- Nanoscale Advances
Prof. Rachela Popovtzer's team, led by Adi Anaki, has published research in Nanoscale Advances on how covalent binding and physical adsorption impact the anti-cancer functionality of antibody-coated gold nanoparticles (GNPs). Covalent binding, especially with higher antibody mass, significantly enhances cancer cell-killing. These findings emphasize the importance of synthesis methods in optimizing GNPs for cancer therapy. For more insights, visit https://lnkd.in/dRnZRx6B
מחקר חדש של פרופ' דרור פיקסלר
The BIMagnetite Nanoparticles: Synthesis and Applications in Optics and Nanophotonics team is thrilled to share that our review article, published in Materials, has been honored as an “Editor’s Choice Article” in the Special Issue on Optical and Photonic Materials. Authored by Nataliia Dudchenko, Shweta Pawar, Ilana Perelshtein, and Dror Fixler, this review is also a strong contender for the Materials 2025 Best Paper Award, recognized for its high views and citations among 2022 publications.
The article provides an in-depth exploration of nanomagnetite synthesis, properties, and a wide range of applications. These include photonic materials, organic light-emitting diodes (OLEDs), magnetic field sensors, “smart” windows, magnetic resonance imaging (MRI), and solar energy harvesting. Magnetite nanoparticles are at the forefront of progress in optics and nanophotonics, paving the way for groundbreaking innovations in sensing, imaging, and advanced photonic devices.
We invite you to support our nomination by viewing, downloading, citing, and sharing the article to help us win this prestigious award.
Please visit- https://lnkd.in/dAhe-qCG
מחקר חדש של פרופ
' תומר לוי פורסם ב- Advanced Optical Materials
Dr. Tomer Lewi and his team have just published their exciting research on lead telluride Hoppercubes in Advanced Optical Materials. Chalcogenides are fascinating for nanophotonics and optoelectronics due to their high refractive indices, extreme thermo-optic coefficients, and excellent mid-infrared (MIR) transparency. In this study, Prof. Lewi’s team lead by Dr. Sukanta Nandi, synthesized PbTe hoppercubes (HC, face-open box cubes) and explored their MIR resonant characteristics.
Key findings include: 🔬 Deep-subwavelength light localization with a spectral response dominated by fundamental and multiple high-order Mie-resonant modes. 🖼️ Nanoimaging mapping using scattering-type scanning near-field optical microscopy (s-SNOM) revealed that scattering at the center is reduced by more than five times compared to the edges. 📊 2D-Hyperspectral scans provided detailed information on local amplitude and phase-resolved near-fields, including higher-order modes with Q-factors close to 100.
This research has significant implications for quantum sensing, IR photodetection, non-linear generation, and ultra-compact high-Q metaphotonics.
For more insights, check out the full publication: https://lnkd.in/di2i7jhv
מחקר חדש של פרופ' אהרון גדנקן פורסם ב- Carbon
Prof. Aharon Gedanken’s team, in collaboration with colleagues from the Czech Republic, has just published exciting research on polymer-supported fluorescent carbon dots (P-CDs) in Carbon. Volatile organic compounds (VOCs) pose significant environmental and health risks due to their toxicity. Detecting these compounds is crucial but challenging due to their low concentrations and unreactive nature. To tackle this, the team developed polymer-supported carbon dots (CDs) using a simple reflux method. These P-CDs are highly stable, and their fluorescence is quenched by VOC analytes such as ethanolamine, diethanolamine, triethanolamine, and ammonia. The polymer component enhances their photophysical and chemical stability, making them ideal for sensing in complex environments. Key highlights of the P-CDs are high selectivity for amines, fast response times, exceptional stability, and user-friendly detection with minimal sample preparation. This innovative design holds promise for various applications, including monitoring prohibited chemical transport and post-toxic analysis. Read the full paper here: https://lnkd.in/dXrKEguD
מחקר חדש של פרופ' אלי סלוצקין פורסם ב- Nano Letters
Exactly 250 years ago, Leonhard Euler discovered the critical conditions for the buckling of a solid column under longitudinal load. This instability phenomenon is well known to civil engineers and anyone who has ever tried to apply longitudinal force to a thin rod: for example, if a straight hammer blow on a nail caused it to bend instead of driving it directly into the wall, it happened due to Euler's instability. Although Euler's original calculation referred to a solid cylindrical rod, applying longitudinal force to a thin cylindrical tube, such as a drinking straw or a syringe needle, can similarly cause it to bend. However, in addition to the classical Euler instability, other scenarios, such as walls’ buckling or wrinkling, are possible as well.
Although these phenomena have been studied for centuries, there are still some open questions remaining. Arguably, the most important question is: do the same laws apply at the nanometric scale? As technological progress depends greatly on the miniaturization of engineering and electronic systems, the questions of mechanical stability at the nanometric scale have great practical importance.
In groundbreaking research by Prof. Eli Sloutskin and his team, in collaboration with the group of Prof. Daeyeon Lee from the University of Pennsylvania in the USA, the conditions for Euler buckling of cylindrical tubes with walls made of a single layer of molecules were uncovered. In this study, the researchers used liquid droplets, the surfaces of which were covered by a temperature-controlled, self-assembled single-molecular-layer crystal. As a result of this crystal’s formation, the droplets transform into a cylindrical shape, while the body of the droplet remains liquid. The internal liquid medium of the droplet does not have elastic properties, so that applying a longitudinal pressure on the droplet directly tests the elastic properties of the two-dimensional molecular layer covering the surface of the droplet.
Strikingly, these experiments demonstrate that the classical theory of elasticity, developed for continuous bulk matter, does not hold for two-dimensional crystals. For example, in stark contrast to classical elasticity, in these crystals, the bending modulus is not dependent on the Young's modulus. The ability to control these two moduli independently opens new possibilities in nanotechnology that do not exist in regular bulk matter. For more insights, please visit https://doi.org/10.1021/acs.nanolett.4c02075
מחקר חדש של דר חנן הרציג שינפוקס פורסם ב- Nature materials
Dr. Hanan Sheinfux and his colleagues have made a significant breakthrough in light compression and polariton manipulation which was recently published in the esteemed Nature Materials. Compressing light into deeply subwavelength volumes enhances in light-matter interactions and is a key driver for polariton research. However, all preexisting methods to confine light inevitably lead to absorption and low resonator quality factors. Dr. Hanan Sheinfux has proposed an alternative approach which unlocks the confinement potential of hyperbolic phonon polaritons in isotopically pure hexagonal boron nitride. The team produced deep-subwavelength cavities and demonstrated a remarkable improvement in confinement, with estimated Purcell factors exceeding 108 and quality factors in the 50-480 range. Interestingly, the quality factors obtained exceed the maximum predicted by impedance-mismatch considerations, indicating that higher-order modes boost confinement. This multimodal approach to nanoscale polariton manipulation is expected to have far-reaching implications for ultra-strong light–matter interactions, mid-infrared nonlinear optics, and nanoscale sensors. For more insights, visit the full article here https://lnkd.in/demTnkYQ
מחקר חדש של ד"ר מדינה טלקוזייבה וד"ר אולגה גירשביץ
We are thrilled to share the recent review paper of Dr. Madina Telkhozhayeva and Dr. Olga Girshevitz, published in the esteemed Advanced Functional Materials. Their research focuses on the structural defects of atomically thin two-dimensional (2D)
materials - a key aspect in tailoring the properties of these materials. They’ve explored ion irradiation, a technique known for its precision and repeatability, to engineer defects in single-atom-thick materials. Their comprehensive review sheds light on how various irradiation parameters influence defect formation in 2D materials. An interesting finding is the role of the substrate in defect yield and formation mechanism. They’ve conducted an in-depth comparison of ion beam-induced defects in both freestanding and supported 2D materials, concentrating on substrate effects. Additionally, they’ve provided a detailed analysis of characterization techniques suitable for each scenario. This work advances our understanding of defect formation and evolution in 2D materials during ion beam irradiation and offers valuable insights into parameter selection for creating desired defects. This could pave the way for designing nanoscale devices with tailored functionality. To learn more, visit https://lnkd.in/drtJMfXT
מחקר חדש של פרופ' דניאל ניסים פורסם ב- Sensors & Actuators
Prof. Daniel Gilbert Nessim, Dr. Rajashree Konar and Prof. Elisabetta Comini from the University of Brescia, Italy, studied layered transition metal dichalcogenides (TMDCs) as the next-generation materials for gas sensing. Their exciting findings have recently been published in Sensors and Actuators: B. Chemical. Prof. They used exfoliated 2 H-WS2 nanosheets to produce high-performance NO2 sensors by conducting thermal annealing at various temperatures to study the oxidation of WS2 and confirm the long-term stability of 2 H-WS2 bulk.
The team fabricated three batches of conductometric sensors from 2 H-WS2 dispersions on electrical transducers using the droplet variation method. These sensors, with two layers (2 L), five layers (5 L), and ten layers (10 L) of WS2 nanosheets, were tested for low NO2 concentrations at different temperatures and relative humidity levels. Bio FastScan Atomic Force Microscopy (AFM, Bruker, AXS, Santa-Barbara, USA) was performed (@BINA) to confirm the layer’s thickness.
The 2 L-WS2-Based sensor outperformed others, showing the highest response at room temperature. It demonstrated excellent repeatability (4 cycles) towards 1 ppm NO2 and long-term stability (over two months). Moreover, it showed full selectivity towards NO2 (1 ppm) at room temperature over NH3 (15 ppm), H2S (15 ppm), ethanol (30 ppm), and acetone (30 ppm).
These findings confirm the potential of 2 H-WS2 nanosheets in fabricating low-power consumption devices with high sensitivity, long-term stability, and excellent selectivity towards NO2, even at high relative humidity levels. For more insights, check out the paper here https://doi.org/10.1016/j.snb.2024.135379
מחקר חדש של פרופ' שלמה מרגל פורסם ב- MATIRALES TODAY CHEMISTRY
In collaboration with TAMA Ltd, Prof. Shlomo Margel, and his team have recently conducted a study that addresses a significant issue in animal food production. Their findings have been published in the journal Materials Today Chemistry.”
As the world’s population expands, so does the production of animal food sources. However, this growth brings challenges - the susceptibility of hay and other food sources to mold is a serious concern for food quality and safety.
Prof. Margel’s team has proposed an innovative solution to tackle this issue. They’ve developed an anti-mold fungicide that is comprised of thymol bound on a thin silica-urea coating of polypropylene fabrics. This unique coating not only enhances the thermal stability of thymol but also allows for its prolonged release. The team extensively investigated the coating’s composition, morphology, thermal stability, and release rates. The findings revealed that the coating provided efficient protection against mold growth, with no side effects on hay exposed to thymol fumes. This research highlights the potential of this fungicide as a safe and efficient preservative for hay. It represents a significant advancement in safeguarding the quality and safety of our animal feed sources. For more information, please visit the following link https://doi.org/1 0.1016/j.mtchem.2024.102009
מחקר חדש של פרופ' רחלה פופובצר פורסם ב- CIRCULATION
Prof. Rachela Popovtzer (Faculty of Engineering) has recently participated i
n groundbreaking collaborative research led by Prof. Jonathan Leor of the Neufeld Cardiac Research Institute at Tel Aviv University. The study, published in the esteemed journal Circulation, uncovers a unique mechanism linking heart disease to cancer via cardiac extracellular vesicles carrying pro-tumorigenic factors. Prof. Popovtzer contributed to this study using a gold nanoparticle-based approach for metabolically-targeted computed tomography assessment of tumor spreading and growth. This study can promote the development of more effective treatments for cancer associated with cardiovascular diseases.
For more insights, please visit 10.1161/CIRCULATIONAHA.123.066911
מחקר חדש של דר' שחר אלון פורסם ב- RNA SOCIETY
Dr. Shahar Alon and his team have diretly measured, inside biopsies, how cancer cells manipulate immune cells at
the molecular level. They recently published their exciting findings in the RNA journal. Their research focused on quantifying the molecular changes that occur when an immune cell comes into contact with a tumor cell. This understanding could unlock new insights into cancer progression and immune evasion mechanisms. Dr. Shahar Alon and his team execute these measurements in situ by expansion sequencing. Expansion sequencing has been a game-changer, enabling them to sequence genes with super-resolution right where they are. They systematically examined whether individual immune cells from specific cell types express genes differently when close to individual tumor cells. Their first step was to demonstrate that a dense mapping of genes in situ can be used to segment cell bodies in 3D. This improved their ability to detect cells that are likely in contact. Next, they employed three different computational approaches to detect the molecular changes triggered by proximity: differential expression analysis, tree-based machine learning classifiers, and matrix factorization analysis. The systematic analysis revealed numerous genes in specific cell types whose expression separates immune cells that are proximal to tumor cells from those that are not. Interestingly, they found a significant overlap between the different detection methods. One remarkable finding was that an order of magnitude more genes are triggered by proximity to tumor cells in CD8 T cells than in CD4 T cells T, which aligns with the ability of CD8 T cells to directly bind Major Histocompatibility Complex (MHC) Class I on tumor cells.
In conclusion, in situ sequencing of an individual biopsy can detect genes likely involved in immune-tumor cell-cell interactions. This is a significant step forward, which might improve the personalization of immunotherapy treatments. The research was led by students Michal Danino and Tal Goldberg under the guidance of Dr. Shahar Alon and Prof. Gonen Singer from the faculty of engineering.
For more insights visit at-https://lnkd.in/dmA-m2CV
דר' תומר לוי זכה בפרס הרקטור היוקרתי לחדשנות מדעית
Dr. Tomer Lewi was awarded for his research on the extraordinary optical
properties of materials from the chalcogenide family. His team measured the highest refractive index ever reported in the optical field (n~11) in bismuth telluride, a topological quantum material with unique properties. They developed a nano-photonic component capable of compressing light to dimensions 10 times smaller than its wavelength. Additionally, they demonstrated that mapping the phase of light in a near field can provide information about the local optical properties of materials, which is not available in other ways. In another project, the team developed optical components that are not temperature-dependent and hold potential for space optics applications. To learn more about Dr. Lewi and his research, you can watch this video: https://youtu.be/me4m1G6UScg?si=NDJbhHpkDxpRBlIO
פרופ' אייל הנדל זכה בפרס הרקטור היוקרתי לחדשנות מדעית
Prof. Handel was awarded for his pioneering work in genetic editing technologies to cure blood and immune system diseases. This year, he published two groundbreaking papers. In the first study, published in the journal Molecular Therapy Nucleic Acids, he presented preclinical evidence for the genetic correction of Bubble Boy Disease, a genetic disease characterized by the absence of an immune system. In the second study, published in the journal Nature Communications, Prof. Handel developed an innovative genetic editing method that replaces a faulty DNA segment with a correct one while removing the defective DNA from the genome. This method is preferable to existing genetic editing methods and may allow more efficient treatment of genetic diseases. To learn more about Prof. Handel and his research, you can watch this video: https://www.youtube.com/watch?v=oNuncsZQHOw&t=1s
מחקר חדש של פרופ' ירון שב-טל פורסם ב- Nucleic Acids
Prof. Yaron Shav-Tal and his team have reported their recent study on Stress Granules (SGs) in the estimated journal Nucleic Acids Research. This
fascinating cytoplasmic structure forms under stress conditions due to translation arrest. These granules are a complex mix of RNA-binding proteins, ribosomal subunits, and messenger RNAs (mRNAs). While it’s known that mRNAs play a role in SG formation, the link between SG assembly and nuclear processes involving mRNAs isn’t fully understood. The team has been exploring this connection by examining the impact of inhibiting mRNA transcription, splicing, and export on the assembly of SGs and the related cytoplasmic P body (PB). Their findings revealed that inhibiting these processes reduces the formation of canonical SGs in a manner independent of eukaryotic initiation factor 2 α phosphorylation and alters PB size and quantity. Interestingly, they found that the splicing inhibitor madrasin promotes the assembly of stress-like granules. They’ve also discovered that introducing synthetic mRNAs directly into the cytoplasm is enough to trigger SG assembly, provided stress-associated protein synthesis pathways are activated. Even more exciting, Prof. Shav-Tal’s team found that adding an excess of mRNA to cells with inactive splicing (and therefore low levels of cytoplasmic mRNAs) encourages SG formation under stress conditions. These findings underscore the fundamental role of the cytoplasmic abundance of newly transcribed mRNAs in the assembly of SGs. To learn more, please visit https://lnkd.in/di5tq3Fi
מחקר חדש של דר' אסף אלבו פורסם ב- Nano photonics
Dr. Asaf Albo and his team developed a novel method to determine the excess electronic temperature of the upper laser level (ULL) in terahertz quantum cascade lasers (THz QCLs) by analyzing the maximum light output power (Pmax) and the current dynamic range ΔJd = ( Jmax − Jth). Their findings were recently published in Nanophotonics. The team has validated this method through rigorous simulation and experimentation, specifically on THz QCLs that support a clean three-level system. This detailed understanding of electronic excess temperatures is crucial for enhancing the temperature performance of THz QCLs. The benefit of their method lies in its simplicity and ease of implementation. It allows for extracting excess electron temperature without intensive experimental effort. This knowledge is set to pave the way for advancements in the temperature performance of THz QCLs, pushing the boundaries beyond the current state-of-the-art. For more insights, visit https://doi.org/10.1515/nanoph-2023-0617
מחקר חדש של פרופ' ליאור אלבז פורסם ב- Nanoscale
Prof. Lior Elbaz and his team have been working with Fe–N–C catalysts, which are at the forefront of replacing Pt-based catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells. Their findings have been recently published in Nanoscale.
The team focused on optimizing the structure of these catalysts to achieve a high active site density and a hierarchical porous structure. This balance is crucial as it allows efficient mass transport of reactants and products, thereby enhancing the overall performance of the fuel cells.
In their innovative approach, Prof. Elbaz's team synthesized aerogels, covalent organic frameworks known for their ultra-low density, high porosity, and large surface area. The versatility of aerogels in composition and pore structure tuning makes them ideal candidates for catalysis.
The results revealed a tunable Fe–N–C catalyst based on a Fe porphyrin aerogel exhibiting high electrocatalytic oxygen reduction reaction activity. Additionally, the team investigated the porous structure's influence on the overall performance in proton exchange membrane fuel cells. For more insights, visit https://lnkd.in/d7vgvfEp
מחקר חדש של פרופ' שי רהימיפור עושה שימוש בטכניקת AFM למחקר אלצהיימר
Alzheimer’s disease (AD), the leading cause of dementia, is responsible for up to 80% of all dementia cases. One of the key toxic events in AD is the progressive accumulation of Amyloid beta (Aβ) protein, which leads to synaptic dysfunction and neuronal death. Currently, there are no effective drugs to halt, reverse, or slow down the progression of AD, and all available treatments are merely symptomatic.
In a recent study, Prof. Shai Rahimipour and his student, Karen Zaika, demonstrated that liposomes attached to a small molecule drug, an analog of anle138b, can inhibit the aggregation and toxicity of Aβ. Bio FastScan Atomic Force Microscopy (AFM, Bruker, AXS, Santa-Barbara, USA) was performed (Bar Ilan Institute of Nanotechnology and Advanced materials (BINA), Bar Ilan University) to confirm the anti-amyloidogenic activity. Images A&B show liposomes alone, C&D show Aβ alone, and E-H show Aβ treated with the liposomes.
The images reveal that untreated Aβ (C&D) forms large fibrils with a spiral structure, a characteristic of Aβ amyloids. However, when Aβ is treated with liposomes (E-H), there is a significant reduction in the length, width, and quantity of the fibrils. The attachment of the liposomes to the fibrils may suggest their high binding affinity to Aβ species (magnification in red).
These AFM results indicate that liposomes conjugated to an anle138b analog can effectively prevent the formation of Aβ aggregates, suggesting a potential treatment for AD.
For more details on AFM: eti.teblum@biu.ac.il
For more details on AD: karen zaika, shai.rahimipour@biu.ac.il
מחקר חדש של פרופ' מלאכי נוקד פורסם ב- Advanced Materials
As published in the prestigious Advanced Materials journal, Prof. Malachi Noked and his team have made a significant leap in sodium-ion battery technology. Their innovative research presents a cobalt-free cathode with impressive capacity, achieved through a high-entropy method that blends multiple elements into a single phase. This is a challenging task due to the complex interactions between the elements. Choosing oxyfluoride materials to reduce oxygen loss and adding lithium to the equation enhanced the crystal structure’s stability and improved the kinetics of the battery’s charge and discharge processes. The result? In early testing, a robust cathode with a reversible capacity of 109 mAh g−1 at 2–4 V and 144 mAh g−1 at 2–4.3 V shows great potential for long-term stability. This approach has successfully minimized phase transitions during battery operation, as evidenced by in-depth diffraction studies. Prof. Noked’s promising findings guide future research toward efficient, high-entropy cathodes for sodium-ion batteries. Dive into the full study for a deeper understanding: https://lnkd.in/dzT8w_DB
מחקר חדש של פרופ' דויד זייתון פורסם ב- Carbon Energy
Prof. David Zitoun and his team have been exploring the potential of single atoms as catalysts. This innovative approach promises to significantly reduce the use of critical raw materials like platinum, a key player in hydrogen oxidation reactions (HOR). Their findings were recently published in the esteemed journal Carbon Energy. Using a redox reaction, Prof. Zitoun’s team has successfully synthesized a platinum single electrocatalyst housed within single-walled carbon nanotubes (SWCNTs). Intensive characterizations through electron microscopy, X-ray photoelectron microscopy, and X-ray absorption spectroscopy have confirmed the single-atom nature of the platinum. They studied the electrochemical behavior of the sample in relation to hydrogen and oxygen using the advanced floating electrode technique, developed by Prof. Anthony Kucernak’s team from Imperial College London (UK). This method minimizes mass transport limitations and provides a detailed understanding of the electrocatalyst’s activity.
The results? The single-atom samples outperformed the state-of-the-art 30% Pt/C in HOR activity while showing almost no oxygen reduction reaction activity in the proton exchange membrane fuel cell operating range. This selective activity towards HOR is a distinctive feature of the catalyst confinement within the SWCNTs. Check the whole study for a deeper understanding
https://lnkd.in/dKh6gB2U
מחקר חדש של פרופ' דן מאיור ופרופ' מלאכי נוקד פורסם ב- Energy Storage Materials
Prof. Dan T. Major, Prof. Malachi Noked, along with Prof. Sagar Mitra (IIT Bombay), and their team recently developed a Nb-doped P2-type single crystal cobalt-free layered oxide cathode material that offers extraordinary cycling stability and high-power performance for Na-ion batteries. Their findings, published in Energy Storage Materials last month, reveal a synergistic stabilization effect in this innovative material. By introducing Nb into the transition metal layer, they reduced the electronic band gap, boosted electronic conductivity, and alleviated ionic diffusion energy barriers. The introduction of Nb results in strong Nb-O bonds, which stabilizes the host structure, and also improves electron and Na+ mobility.
This research achieved a uniform distribution of niobium throughout the single crystal, specifically doped at the nickel site within the bulk, without triggering atomic-scale surface reorganization. The presence of single crystals enhances various kinetic factors, highlighting the profound correlation between structural defects and chemical proliferation, reducing the evolution of oxygen gas. Their P2-type Nb-doped single crystal cathode (Na0.67Ni0.31Mn0.67Nb0.02O2) shows an impressive capacity retention of >95% after 100 cycles at 0.1 C and >90% after 2000 cycles at 1 C. Further practical assessments in complete cell setups with a pre-sodiated hard carbon anode confirm the material’s viability, with capacity retention of over 93% after 100 cycles in a coin cell and approximately 89% in a pouch cell format. This comprehensive study underscores the transformative potential of Nb-doped single crystal cobalt-free P2-type layered oxide cathode materials, marking a significant leap forward in sodium-ion battery technology.
For more insights, please check out the link
https://lnkd.in/djSrQzn8
לכבוד יום העצמאות ה-76 למדינת ישראל- הדפסת תלת מימד של מגן דוד
In honor of Israel's 76th Independence Day, we proudly present a special edition Star of David crafted through innovative 3D printing technology.
Utilizing the cutting-edge Nano-Scribe machine, the Fabrication unit in BINA printed the Star of David in a range of sizes, spanning from 1 micron to 100 microns.
Happy Independence day
For more details about 3D printing- Yossi.abulafia@biu.ac.il
מחקר חדש של פרופ' מלאכי נוקד בשיתוף עם פרופ' דורון אורבך ופרופ' דורון נווה פורסם ב- Nature Nanotechnology
Under the leadership of Prof. Malachi Noked, along with Prof. Doron Aurbach, Prof. Doron Naveh, and their team, a significant advancement has been achieved. This breakthrough has been recognized and published in the highly respected Nature Nanotechnology journal. Their research addresses a pivotal issue in the advancement of all-solid-state lithium batteries (ASSLBs)—balancing cost-efficiency with performance. The team introduced a sulfide-based ASSLB featuring a high-energy, cobalt-free LiNiO2 cathode, distinguished by its robust structure. This innovation stems from a high-pressure oxygen synthesis process, followed by the atomic layer deposition of an ultrathin, multi-element LixAlyZnzOδ protective layer. This layer not only fortifies the cathode's structure but also improves the dynamics at the interface, reducing degradation and side reactions. The result? An ASSLB that boasts an impressive areal capacity of 4.65 mAh cm−2, a specific cathode capacity of 203 mAh g−1, remarkable cycling stability with 92% capacity retention over 200 cycles, and commendable rate capability, maintaining 93 mAh g−1 at a 2C rate. This study paves the way for cost-effective yet high-performing ASSLBs, circumventing the need for expensive materials traditionally used in cathodes and coatings. It's a significant step forward in our quest for sustainable energy solutions. Dive into the full paper for a deeper understanding at https://doi.org/10.1038/s41565-023-01519-8
מחקר חדש של דר' ניצן גונן פורסם ב- Nucleic Acids
Dr. Nitzan Gonen and her team have recently published exciting research on understanding male development in mammals at Nucleic Acids Research. Their study sheds light on the critical role of two SOX transcription factors, SRY and SOX9, in embryonic testis. They previously discovered that the deletion of Enhancer 13 (Enh13, 557 bp long) of the Sox9 gene can lead to XY male-to-female sex reversal. While individual microdeletions in Enh13’s transcription factor binding sites (TFBS) still allow for normal testicular development, the combined microdeletions of just two SRY/SOX binding motifs can fully abolish Enh13 activity, leading to XY male-to-female sex reversal. This underscores the importance of these few nucleotides of non-coding DNA for proper male development. Interestingly, Dr. Gonen found that the nature of these TFBS mutations can lead to dramatically different phenotypic outcomes. This finding explains the distinct clinical outcomes observed in patients harboring different variants of the same enhancer.
To get more information, visit https://lnkd.in/dwXefgtV
מחקר חדש של פרופ' דן מאיור פורסם
A recent publication in the esteemed Angewandte Chemie journal features the innovative research of Prof. Dan T. Major and his team on the role of terpene synthases (TPS). Terpenes, a broad category of substances naturally produced by plants, bacteria, and fungi, have a range of medicinal applications. These include acting as anti-inflammatories, antibiotics, mood stabilizers, and even exhibiting anti-cancer properties. Additionally, terpenes contribute to the diverse array of natural fragrances found in citrus fruits, roses, cannabis, and more.
In their innovative study, Prof. Major's team has, for the first time, identified notable differences in how these substances are synthesized in plants as opposed to bacteria and fungi. Their research methodology involved various computational tools, spanning both computational biology (for sequence comparison and motif identification) and computational chemistry (for predicting the geometry of the precursor substance that forms terpenes within the enzymes that produce them). One of these tools, specifically tailored for this study, was developed in Prof. Major's laboratory.
This pioneering research holds the potential to produce precisely and on a large scale terpenes for various medicinal and industrial applications. For more detailed insights, please visit the published article at https://onlinelibrary.wiley.com/doi/10.1002/anie.202400743
מחקר חדש של פרופ' שרון שוורץ פורסם ב-Communications Engineering
New technique for improving CT scan resolution
A technique for improving the resolution of X-ray computed tomography (CT) scans is presented in a proof-of-principle study published in Communications Engineering.
The technique developed by Sharon Shwartz, Adi Ben-Yehuda and colleagues combines a single-pixel imaging method with a deep learning algorithm and a CT image reconstruction tool to measure scattered radiation produced during CT scanning, which can blur and distort images. They used their technique to reconstruct a high resolution three-dimensional CT image of a cow bone sample. They estimate the resolution of the images obtained using their method to be 500 micrometres, which they suggest is approximately an order of magnitude higher than the typical resolution of scattered X-ray imaging techniques.
The authors suggest that, with further development, their technique could have the potential to enhance the image quality of medical CT images by enabling small and complex details to be viewed at lower radiation doses, which could minimise radiation exposure for patients.
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מחקר חדש של פרופ' דרור פיקסלר פורסם
New publication from the laboratory of Dror Fixler, in which a groundbreaking biosensor for the accurate measurement of blood oxygen is presented .
With conventional methods, scattering is often overlooked, leading to errors in blood oxygen measurement. Our optical biosensor, which utilizes the Iso-Pathlength (IPL) point, isolates absorption from scattering, enabling accurate extraction of oxygen saturation.
With a single light source and multiple photodetectors (PDs), our biosensor achieves remarkable accuracy with a margin of error of only 0.5%. It has been tested on thirty-eight people under normal and extreme conditions, proving its reliability in real-life scenarios.
This innovation promises more reliable and accessible blood oxygen monitoring.
מחקר חדש של פרופ' שולמית מיכאלי פורסם ב- Nature Cmunications
Prof. Shulamit Michaeli in collaboration with Prof. Ada Yunath recently unveiled the intricate dance of Trypanosomes at Nature Communications. These notorious protozoan parasites cycle between insect and mammalian hosts, triggering sleeping sickness. Prof. Michaeli and her team mapped the elusive changes of pseudouridine (Ψ) modification on rRNA across the parasite’s two life stages, employing not one but four genome-wide approaches. The results? Knocking out the snoRNAs that guide Ψ on helix 69 (H69) of the large rRNA subunit proved to be lethal, highlighting their critical role. But it gets more intriguing. A single knock-out of a snoRNA guiding Ψ530 on H69 shook up the 80S monosome’s composition, impacting the translation of a specific protein subset. Supported by a high-resolution cryo-EM structure, their study suggests that altering rRNA modifications could lead to ribosomes with a preference for translating proteins beneficial to the parasite’s state. This discovery advances our understanding of parasitic mechanisms and opens the door to targeted treatments.
For more details, visit https://lnkd.in/d3htjaeK
מחקר חדש של דר' ניצן גונן פורסם
Exciting Breakthrough in Testis Modeling: Introducing Testis Organoids!
Dr. Nitzan Gonen's latest paper presents a significant advancement in the field of male reproductive health research by establishing the first-ever testis organoid model. This innovative model holds immense potential for understanding and treating disorders of sex development and male infertility.
מחקר חדש של דר' אולגה גרשביץ פורסם
A recent study delving into the effects of Ga ion irradiation on freestanding monolayer graphene, with a specific focus on the behavior of defect-induced Raman lines, was initiated by Nahum Shabi and published in Surfaces and Interfaces. The article was authored by three members of the BINA team: Nahum Shabi, Dr. Olga Girshevitz, and Dr. Madina Telkhozhayeva.
פרופ' רחלה פופובצר זכתה בפרס EIC
EIC grant for nanoparticle-based research for cancer treatment
Prof. Rachela Popovatzer from the Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials won a grant of €150,000 for research aimed at making drug treatment more effective and focused.
What will the next generation of cancer drugs look like? What will make them more effective and focused? The European Union is investing in the implementation of an innovative Israeli project based on gold nanoparticles, for the more effective treatment of various cancers, including breast cancer. Behind the study is Prof. Rachela Popovatzer, Vice Dean of the Kopkin Faculty of Engineering and a leading researcher at the Institute of Nanotechnology and Advanced Materials at Bar-Ilan University. Prof. Popovatzer's innovative project, called Golden-ADC, proposes a new concept for combining antibodies and chemotherapy drugs in the treatment of tumors, such as those characteristic of breast cancer.
Prof. Popovatzer's patent is based on insulin-coated gold nanoparticles, which serve as an innovative platform for transporting antibody-based drugs (ADCs) to tumor areas. The use of gold nanoparticles makes it possible to overcome a number of challenges that have faced biological treatment to date, including how the drug binds to the antibody. This greatly improves the effectiveness of treatment. "As part of the Golden-ADC project, we envision achieving significant progress in the development of the technology, by demonstrating a proof-of-concept that combines efficacy and safety in triple-negative breast cancer models," notes Prof. Popovatzer.
The European Research Council also believes in Prof. Popovatzer's project, and therefore awarded him the EIC (Proof of Concept Grant) of 150,000 euros. This grant funds researchers previously supported by the European Research Council, enabling them to advance their ideas from the groundbreaking research phase towards practical applications of the findings, including the first stages of commercial use.
This is not the first time Prof. Popovetzer has been awarded a grant from the European Union. In March 2022, she was awarded the Council's Consolidator Grant for the innovative research project BrainCRISPR, which presented a novel gold nanoplatform for inserting CRISPR biomolecules into the brain to cure rare genetic brain diseases.
מחקר חדש של דר' אליהו כהן פורסם
Exciting breakthrough! New article written by Dr. Eliahu Cohen's group, in collaboration with Prof. Ernesto Galvão's group at INL, introduces a novel approach that connects and unifies key quantities crucial in quantum computation, sensing, simulation, and communication. The work presents Bargmann invariants as foundational building blocks, revealing unique quantum properties. Coherence, a fundamental phenomenon across physics, underlies these quantities, broadening its scope beyond conventional optics towards sets of quantum states. "Our quantum circuits, developed through this approach, enable straightforward measurement of important quantities using quantum computers", says Dr. Cohen. The research is a result of a two-year collaboration with INL, initiated and partially funded by BINA.
https://lnkd.in/eMTg7gQq
מחקר חדש של פרופ' אורית שפי פורסם ב- Advanced Materials Technologies
New article written by Prof. Orit Shefi in collaboration with Prof. Ester Segal from the Technion, demonstrating targeted cancer treatment by biolistic delivery of porous silicon chips loaded with light activated drug.
