A5043898319- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Spectroscopy and Quantum Chemical Studies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Crystallization and Solubility Studies
- Lanthanide and Transition Metal Complexes
- Photonic and Optical Devices
- Advanced Battery Technologies Research
- Photonic Crystals and Applications
- Semiconductor materials and devices
- MXene and MAX Phase Materials
- Molecular spectroscopy and chirality
- Advanced battery technologies research
- X-ray Diffraction in Crystallography
- MRI in cancer diagnosis
- Molecular Junctions and Nanostructures
- Graphene research and applications
- Layered Double Hydroxides Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Strong Light-Matter Interactions
- Nanoparticle-Based Drug Delivery
- Bacterial Identification and Susceptibility Testing
- 2D Materials and Applications
- Perovskite Materials and Applications
- Optical Coatings and Gratings
Bar-Ilan University
2015-2024
Alzheimer's Association of Israel
2021
German Cancer Research Center
2010
Heidelberg University
2010
University Hospital Heidelberg
2010
All-oxide-based photovoltaics (PVs) encompass the potential for extremely low cost solar cells, provided they can obtain an order of magnitude improvement in their power conversion efficiencies. To achieve this goal, we perform a combinatorial materials study metal oxide based light absorbers, charge transporters, junctions between them, and PV devices. Here report development internal quantum efficiency (IQE) method. IQE measures associated with separation collection processes, thus is...
Abstract MXenes are a large class of 2D materials that consist few‐atoms‐thick layers transition metal carbides, nitrides, or carbonitrides. The surface functionalization has immense implications for their physical, chemical, and electronic properties. However, solution‐phase often leads to structural degradation the MXene electrodes. Here, non‐conventional, single‐step atomic reduction (ASR) technique is adopted (Ti 3 C 2 T x ) in an layer deposition reactor using trimethyl aluminum as...
Abstract Owing to high energy density and economic viability, rechargeable Mg batteries are considered alternatives lithium ion batteries. However besides the chevrel phase, none of conventional inorganic cathode materials demonstrate reversible intercalation/deintercalation +2 ions in an anhydrous electrolyte system. The lack voltage capacity frustrates realization Previous studies indicate that vanadium pentoxide (V 2 O 5 ) has potential reversibly insert/extract ions. However, many...
Among the most reliable techniques for exfoliation of two-dimensional (2D) layered materials, sonication-assisted liquid-phase (LPE) is considered as a cost-effective and straightforward method preparing graphene its 2D inorganic counterparts at reasonable sizes acceptable levels defects. Although there were rapid advances in this field, effect outcome sonication frequency are poorly understood often ignored, resulting low efficiency. Here, we demonstrate that simple mild bath higher power...
Core P(MAOETIB-GMA) microparticles of 40−200 μm were prepared by suspension copolymerization the iodinated monomer 2-methacryloyloxyethyl (2,3,5-triiodobenzoate), MAOETIB, with a low concentration glycidyl methacrylate, GMA, which formed hydrophilic surfaces on particles. Magnetic γ-Fe2O3/P(MAOETIB-GMA) core−shell coating aforementioned core particles through nucleation iron oxide nanoparticles This was followed stepwise growth thin layers. The radiopacity and magnetism these demonstrated in...
Embolization therapy is gaining importance in the treatment of malignant lesions, and even more benign lesions. Current embolization materials are not visible imaging modalities. However, it assumed that directly material may provide several advantages over current agents, ranging from particle shunt reflux prevention to improved control follow-up assessment. X-ray- as well magnetic resonance (MRI)-visible have been demonstrated experiments. In this study, we present an with property being...
Extensive efforts are currently underway to develop safe and cost-effective electrolytes for large-scale energy storage. In this regard, water-based may be an attractive option, but their narrow electrochemical stability window hinders realization. Although highly concentrated fluorinated have been shown effective in suppression of water splitting, enabling significant widening the applied potential range, they utilize expensive salts (e.g., lithium bis(trifluoromethane sulfonyl) imide...
We present a new method for differentiating racemic crystals from enantiopure crystals. Recently, developments in optical filters have enabled the facile use of Raman spectroscopy to detect low-frequency vibrational (LFV) modes. Here, first time, we characterize LFV modes crystalline organic materials composed chiral molecules. The LF-Raman spectra and exhibit significant variation, which attribute different hydrogen-bond networks crystal structures. Across representative set amino acids,...
Pulsed laser deposition (PLD) is widely used in combinatorial material science, as it enables rapid fabrication of different composite materials. Nevertheless, this method was usually limited to small substrates, since PLD on large substrate areas results severe lateral inhomogeneity. A few technical solutions for problem have been suggested, including the use designs masks, which were meant prevent inhomogeneity thickness, density, and oxidation state a layer, while only composition allowed...
Abstract Rechargeable Mg‐ion Batteries (RMB) containing a Mg metal anode offer the promise of higher specific volumetric capacity, energy density, safety, and economic viability than lithium‐ion battery technology, but their realization is challenging. The limited availability suitable inorganic cathodes compatible with electrolytes relevant to restricts development RMBs. Despite promising capability some oxides reversibly intercalate +2 ions at high potential, its lack stability in...
Abstract Bismuth oxide nanoparticles of 12.1 ± 3.0 nm diameter were prepared by thermal decomposition bismuth acetate dissolved in ethylene glycol the presence an oxidizing agent. Functionalization and stabilization hydrophobic Bi 2 O 3 was accomplished coating these core with human serum albumin (HSA), via a precipitation process. The formed /HSA core‐shell 15.2 3.5 diameter. Elemental analysis measurements indicated that weight % is 72.9. crystalline structure examined XRD. radiopacity...
Abstract The pharmaceutical industry is in need of new techniques to identify the chirality solids due regulatory and safety concerns regarding biological activity enantiomers. In this study, we present for first time application low‐frequency Raman spectroscopy as a sensitive method analyzing chiral purity crystals. Using method, were able small amounts, low 1 % w/w, an enantiomer racemic To demonstrate capabilities used model system based on crystals enantiopure, their mixtures various...
Rapid and accurate Gram differentiation is paramount as the first step of pathogen identification antibiotics administration. However, current method requires additional reagents, time-consuming, operator dependent. Here we show principle tip enhanced Raman spectroscopy (TERS) can differentiate between negative positive species, by detecting changes in tip-enhancement scattering from bacteria's lipid-bilayer membrane, which specifically enhances bacteria.
Owing to its high energy density, LiNi0.8Co0.1Mn0.1O2 (NMC811) is a cathode material of prime interest for electric vehicle battery manufacturers. However, NMC811 suffers from several irreversible parasitic reactions that lead severe capacity fading and impedance buildup during prolonged cycling. Thin surface protection films coated on the mitigate degradative chemomechanical at electrode-electrolyte interphase, which helps increase cycling stability. these coatings may impede diffusion...
Transition-metal dichalcogenides (TMDCs) are unique layered materials with exotic properties. So, examining their structures holds tremendous importance. 2H-MoSe2 (analogous to MoS2; Gr. 6 TMDC) is a crucial optoelectronic material studied extensively using Raman spectroscopy. In this regard, low-frequency (LFR) spectroscopy can probe material's structure as it reveals distinct vibration modes. Here, we focus on understanding the microstructural evolution of different morphologies and layers...
Rapid and accurate detection of pathogens is paramount to human health. Spectroscopic techniques have been shown be viable methods for detecting various pathogens. Enhanced Raman spectroscopy can discriminate unique bacterial signatures; however, many these require precise conditions do not in vivo replicability. Common biological such as rapid antigen tests high specificity but sensitivity. Here we developed a new method bacteria that both highly specific sensitive by combining the antibody...
Abstract Extracting the theoretically high capacity of LiCoO 2 (LCO) is desirable for enhancing energy density currently used lithium‐ion batteries (LIBs) portable devices. The bottleneck exhibiting associated with limited cut‐off positive voltages beyond which degradation electrode/electrolyte takes place. In this work, we apply hybrid organic‐inorganic alucone thin film grown directly on LCO by a molecular layer deposition (MLD) method, using sequential exposure to Al‐based and...
The ability to confine excitons within monolayers has led fundamental investigations of nonradiative energy transfer, super-radiance, strong light–matter coupling, high-efficiency light-emitting diodes, and recently lasers in lateral resonator architectures. Vertical cavity surface emitting (VCSELs), which lasing occurs perpendicular the device plane, are critical for telecommunications large-scale photonics integration, however optical self-absorption low fluorescence quantum yields have...
LiNi 0.8 Co 0.1 Mn O 2 (NCM811) is a promising cathode material for long range electric vehicles. However, the suffers severe chemo-mechanical degradation that can cause gradual capacity loss upon prolonged cycling. Surface passivation of NMC811 was demonstrated to help in retaining structural integrity extended Herein, we report surface NCM811 using Li S and Na precursors via direct simple wet chemical treatment, mitigation parasitic reactions at electrode electrolyte interphase. This...
Distinguishing between d and l enantiomers is of important scientific interest, especially for the pharmaceutical industry. Enantiomeric differentiation in solid form repeatedly presented as a challenge research community. Raman spectroscopy nondestructive tool, widely used characterization different materials by probing their vibrational modes. The low-frequency region spectrum reveals lattice-level interactions global fluctuations molecule. Lower frequencies correspond to vibrations...