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Aug 2021 • Langmuir

Sonochemically Prepared BSA microspheres as adsorbents for the removal of organic pollutants from water

Kusha Sharma, Hari Krishna Sadhanala, Yitzhak Mastai, Ze’ev Porat, Aharon Gedanken

This work investigates, for the first time, the application of sonochemically prepared bovine serum albumin (BSA) microspheres (BSAMS) as adsorbents of industrial organic pollutant dyes, such as rhodamine B (RhB), rhodamine 6G (Rh6G), and methylene blue (MB). These dyes also serve as model compounds for other organic pollutants such as bisphenol A and 2-nitrophenol. Adsorption kinetics of the dyes by the BSAMS was studied using pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetic models. It was found that RhB follows PFO, with an adsorption capacity, qe,cal, of 7.9 mg/g, which was closer to the experimental adsorption capacity of qe,exp. of 7.6 mg/g. However, MB and Rh6G were controlled by PSO kinetics, with a qe,cal of 5.6 mg/g for MB and 6.6 mg/g for Rh6G, closer to the experimental adsorption capacity of 5.7 and 6.4 mg/g, respectively. The intraparticle diffusion (ID) model applied to …

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Aug 2021 • WILEY

Modular assembly of immune-event-labeled synthetic AIRR-datasets for the development and benchmarking of AIRR-based machine learning

Maria Chernigovskaya, Andrei Slabodkin, Milena Pavlovic, Lonneke Scheffer, Rahmad Akbar, Philippe Robert, Gur Yaari, Geir Kjetil Sandve, Victor Greiff


Aug 2021 • Advanced Energy Materials

Bidirectionally Compatible Buffering Layer Enables Highly Stable and Conductive Interface for 4.5 V Sulfide‐Based All‐Solid‐State Lithium Batteries

Longlong Wang, Xingwei Sun, Jun Ma, Bingbing Chen, Chao Li, Jiedong Li, Liang Chang, Xinrun Yu, Ting‐Shan Chan, Zhiwei Hu, Malachi Noked, Guanglei Cui

High‐voltage all‐solid‐state lithium batteries (HVASSLBs) are considered attractive systems for portable electronics and electric vehicles, due to their theoretically high energy density and safety. However, realization of HVASSLBs with sulfide solid electrolytes (SEs) is hindered by their limited electrochemical stability, resulting in sluggish interphase dynamics. Here, a bidirectionally compatible buffering layer design scheme is proposed to overcome the interfacial challenges of sulfide‐based HVASSLBs. As a proof of concept, it is found that NASICON‐type LixZr2(PO4)3 surprisingly exhibit great compatibility with both 4.5 V LiCoO2 and Li6PS5Cl, based on the results of first‐principles calculations and various in situ/ex situ characterizations. This compatibility significantly restrains the interface reactivity and boosts interfacial Li‐ion transport. Therefore, 4.5 V sulfide‐based HVASSLBs can exhibit remarkably …

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Aug 2021 • Physical Review B

Probing the metallic energy spectrum beyond the Thouless energy scale using singular value decomposition

Richard Berkovits

Disordered quantum systems feature an energy scale known as the Thouless energy. For energy ranges below this scale, the properties of the energy spectrum can be described by random matrix theory. Above this scale a different behavior sets in. For a metallic system it was shown long ago by Altshuler and Shklovskii [Sov. Phys. JETP 64, 127 (1986)] that the number variance should increase as a power law with power dependent on only the dimensionality of the system. Although tantalizing hints at this behavior were seen in previous numerical studies, it is quite difficult to verify this prediction using the standard local unfolding methods. Here we use a different unfolding method, ie, singular value decomposition, and establish a connection between the power law behavior of the scree plot (the singular values ranked by their amplitude) and the power law behavior of the number variance. Thus, we are able to …

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Aug 2021 • Physical Review B

Probing the metallic energy spectrum beyond the Thouless energy scale using singular value decomposition

Richard Berkovits

Disordered quantum systems feature an energy scale known as the Thouless energy. For energy ranges below this scale, the properties of the energy spectrum can be described by random matrix theory. Above this scale a different behavior sets in. For a metallic system it was shown long ago by Altshuler and Shklovskii [Sov. Phys. JETP 64, 127 (1986)] that the number variance should increase as a power law with power dependent on only the dimensionality of the system. Although tantalizing hints at this behavior were seen in previous numerical studies, it is quite difficult to verify this prediction using the standard local unfolding methods. Here we use a different unfolding method, ie, singular value decomposition, and establish a connection between the power law behavior of the scree plot (the singular values ranked by their amplitude) and the power law behavior of the number variance. Thus, we are able to …

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Aug 2021 • Nonlinear Optics, NW2B. 4, 2021

Vector Properties of Forward Stimulated Brillouin Scattering in Standard Single-Mode Fibers

Hilel Hagai Diamandi, Gil Bashan, Yosef London, Keren Shemer, Kavita Sharma, Elad Zehavi, Avi Zadok

Torsional-radial guided acoustic modes in standard single-mode fibers are stimulated by pump tones of linear and orthogonal polarizations. The same acoustic modes induce photo-elastic birefringence. Circularly polarized pump waves can generate acoustic vortex beams.

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Jul 2021 • Science Immunology

Cross-reactive antibodies against human coronaviruses and the animal coronavirome suggest diagnostics for future zoonotic spillovers

Shelley Klompus, Sigal Leviatan, Thomas Vogl, Roei D Mazor, Iris N Kalka, Liat Stoler-Barak, Nachum Nathan, Ayelet Peres, Lihee Moss, Anastasia Godneva, Sharon Kagan Ben Tikva, Eilat Shinar, Hadas Cohen Dvashi, Ronen Gabizon, Nir London, Ron Diskin, Gur Yaari, Adina Weinberger, Ziv Shulman, Eran Segal

The spillover of animal coronaviruses (aCoVs) to humans has caused SARS, MERS, and COVID-19. While antibody responses displaying cross-reactivity between SARS-CoV-2 and seasonal/common cold human coronaviruses (hCoVs) have been reported, potential cross-reactivity with aCoVs and the diagnostic implications are incompletely understood. Here, we probed for antibody binding against all seven hCoVs and 49 aCoVs represented as 12,924 peptides within a phage-displayed antigen library. Antibody repertoires of 269 recovered COVID-19 patients showed distinct changes compared to 260 unexposed pre-pandemic controls, not limited to binding of SARS-CoV-2 antigens but including binding to antigens from hCoVs and aCoVs with shared motifs to SARS-CoV-2. We isolated broadly reactive monoclonal antibodies from recovered COVID-19 patients that bind a shared motif of SARS-CoV-2, hCoV …

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Jul 2021 • ACS Applied Materials & Interfaces

Enhancement of Structural, Electrochemical, and Thermal Properties of High-Energy Density Ni-Rich LiNi0.85Co0.1Mn0.05O2 Cathode Materials for Li-Ion …

Yehonatan Levartovsky, Arup Chakraborty, Sooraj Kunnikuruvan, Sandipan Maiti, Judith Grinblat, Michael Talianker, Dan Thomas Major, Doron Aurbach


Jul 2021 • Journal of Visualized Experiments: Jove

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Ganit Indech, Reut Plen, Dafna Levenberg, Naor Vardi, Michal Marcus, Alejandra Smith, Shlomo Margel, Orit Shefi, Amos Sharoni

The ability to direct neurons into organized neural networks has great implications for regenerative medicine, tissue engineering, and bio-interfacing. Many studies have aimed at directing neurons using chemical and topographical cues. However, reports of organizational control on a micron-scale over large areas are scarce. Here, an effective method has been described for placing neurons in preset sites and guiding neuronal outgrowth with micron-scale resolution, using magnetic platforms embedded with micro-patterned, magnetic elements. It has been demonstrated that loading neurons with magnetic nanoparticles (MNPs) converts them into sensitive magnetic units that can be influenced by magnetic gradients. Following this approach, a unique magnetic platform has been fabricated on which PC12 cells, a common neuron-like model, were plated and loaded with superparamagnetic nanoparticles. Thin films of ferromagnetic (FM) multilayers with stable perpendicular magnetization were deposited to provide effective attraction forces toward the magnetic patterns. These MNP-loaded PC12 cells, plated and differentiated atop the magnetic platforms, were preferentially attached to the magnetic patterns, and the neurite outgrowth was well aligned with the pattern shape, forming oriented networks. Quantitative characterization methods of the magnetic properties, cellular MNP uptake, cell viability, and statistical analysis of the results are presented. This approach enables the control of neural network formation and improves neuron-to-electrode interface through the manipulation of magnetic forces, which can be an effective tool for in vitro …

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Jul 2021 • Photonics

Comparison of THz-QCL Designs Supporting Clean N-Level Systems

Nathalie Lander Gower, Silvia Piperno, Asaf Albo

Three different Terahertz quantum-cascade-laser designs supporting clean n-level systems were analyzed using nonequilibrium Green’s functions. In clean n-level systems, most of the electrons occupy the active laser levels, with thermally activated leakage channels being suppressed almost entirely up to room temperature. Simulations of the three designs, namely a resonant phonon design, a two-well design, and a split-well direct-phonon design were investigated. The results from the simulations indicated that the two-well design would perform best overall, in terms of variations in current density, interface roughness, and ionized impurity scattering. We conclude that future research aiming to improve the temperature performance of such laser designs should be based on a two-well design.

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Jul 2021 • Cellulose 28 (18), 11275-11285, 2021

Effective degradation of cellulose by Microwave irradiation in alkaline solution

Lama Jabareen, Moorthy Maruthapandi, Arumugam Saravanan, Aharon Gedanken

The utilization of lignocellulosic biomass is effective to produce chemicals and fuels, which are of importance for the establishment of a sustainable society. The conversion of cellulose, which is the main component of the lignocellulosic biomass, into signi cant chemicals that can be further converted to different chemicals or fuels in the subsequent step, under gentle conditions is a promising route. Organic acids such as acetic acid, glycolic acid and formic acid are signi cant chemicals are examples of such products. A novel method to producing important platform chemicals from Micro-crystalline cellulose was developed. Micro-crystalline cellulose was degraded as a result of an oxidation with potassium chlorate by microwave radiation, in a one-pot procedure, e cient reaction conditions such as short reaction time and full conversion of the cellulose were identi ed. The reaction products have been analyzed by 1H, 13C NMR, XPS, TGA and XRD.

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Jul 2021 • Photonics

Comparison of THz-QCL Designs Supporting Clean N-Level Systems

Nathalie Lander Gower, Silvia Piperno, Asaf Albo

Three different Terahertz quantum-cascade-laser designs supporting clean n-level systems were analyzed using nonequilibrium Green’s functions. In clean n-level systems, most of the electrons occupy the active laser levels, with thermally activated leakage channels being suppressed almost entirely up to room temperature. Simulations of the three designs, namely a resonant phonon design, a two-well design, and a split-well direct-phonon design were investigated. The results from the simulations indicated that the two-well design would perform best overall, in terms of variations in current density, interface roughness, and ionized impurity scattering. We conclude that future research aiming to improve the temperature performance of such laser designs should be based on a two-well design.

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Jul 2021 • FEBS OPEN BIO 11, 16-16, 2021

Matrix remodeling as early pathophysiological biomarker

I Sagi, E Shimshoni, I Adir, I Solomonov


Jul 2021 • Membranes

Antibacterial and In Vivo Studies of a Green, One-Pot Preparation of Copper/Zinc Oxide Nanoparticle-Coated Bandages

Archana R Deokar, Ilana Perelshtein, Melissa Saibene, Nina Perkas, Paride Mantecca, Yeshayahu Nitzan, Aharon Gedanken

Simultaneous water and ethanol-based synthesis and coating of copper and zinc oxide (CuO/ZnO) nanoparticles (NPs) on bandages was carried out by ultrasound irradiation. High resolution-transmission electron microscopy demonstrated the effects of the solvent on the particle size and shape of metal oxide NPs. An antibacterial activity study of metal-oxide-coated bandages was carried out against Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). CuO NP-coated bandages made from both water and ethanol demonstrated complete killing of S. aureus and E. coli bacteria within 30 min., whereas ZnO NP-coated bandages demonstrated five-log reductions in viability for both kinds of bacteria after 60 min of interaction. Further, the antibacterial mechanism of CuO/ZnO NP-coated bandages is proposed here based on electron spin resonance studies. Nanotoxicology investigations were conducted via in vivo examinations of the effect of the metal-oxide bandages on frog embryos (teratogenesis assay—Xenopus). The results show that water-based coatings resulted in lesser impacts on embryo development than the ethanol-based ones. These bandages should therefore be considered safer than the ethanol-based ones. The comparison between the toxicity of the metal oxide NPs prepared in water and ethanol is of great importance, because water will replace ethanol for bulk scale synthesis of metal oxide NPs in commercial companies to avoid further ignition problems. The novelty and importance of this manuscript is avoiding the ethanol in the typical water: ethanol mixture as the solvent for the preparation of metal …

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Jul 2021 • Journal of experimental botany

Corrigendum to: Siliplant1 protein precipitates silica in sorghum silica cells

Santosh Kumar, Nurit Adiram-Filiba, Shula Blum, Javier Arturo Sanchez-Lopez, Oren Tzfadia, Ayelet Omid, Hanne Volpin, Yael Heifetz, Gil Goobes, Rivka Elbaum

J Exp Bot. 2021 Jul 31;erab333. doi: 10.1093/jxb/erab333. Online ahead of print … 1 Robert H Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel … 2 Electron Microscopy Facility, Centre for Cellular and Molecular Platforms (C-CAMP), National Centre for Biological Sciences (NCBS-TIFR), Bangalore, India … 3 Department of Chemistry, Bar-Ilan University, Ramat Gan, Israel … 4 Department of Entomology, Robert H Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel … 5 Bioinformatics and Systems Biology, VIB/Ghent University, Gent, Belgium … 6 Danziger Innovations Limited, Mishmar Hashiva, Israel.

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Jul 2021

Use of cell doublets for studying cytokinesis regulation reveals a new form of cytokinesis regression

Nofar Levi-Dadon, Einat Panet, Shira Huri Ohev Shalom, Ohad Kraus, Irit Shoval, Roxane Lahmi, Howard Shapiro, Amit Tzur

Page 1. Use of cell doublets for studying cytokinesis regulation reveals a new form of cytokinesis regression Nofar Levi-Dadon1 Bar-Ilan University Einat Panet Bar-Ilan University Shira Huri Ohev Shalom Bar-Ilan University Ohad Kraus Bar-Ilan University Irit Shoval Bar-Ilan University Roxane Lahmi Bar-Ilan University Howard Shapiro The Center for Microbial Cytometry, West Newton, MA, USA Amit Tzur (  Amit.Tzur@biu.ac.il ) Bar-Ilan University Article Keywords: Cytokinesis regression, Cytokinesis index, Flow cytometry, Doublet discrimination cell- autonomous regulation, lymphocytic leukemia cells L1210 DOI: https://doi.org/10.21203/rs.3.rs-730080/v1 License:   This work is licensed under a Creative Commons Attribution 4.0 International License …

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Jul 2021 • 2021 IEEE 21st International Conference on Nanotechnology (NANO), 389-392, 2021

Electronic Transport Through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride

Domenikos Chryssikos, Julian M Dlugosch, Jerry A Fereiro, Takuya Kamiyama, Mordechai Sheves, David Cahen, Marc Tornow

Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants for the EGaIn top contact and for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state …

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Jul 2021 • Journal of Controlled Release

Nano-Leish-IL: A novel iron oxide-based nanocomposite drug platform for effective treatment of cutaneous leishmaniasis

S Kannan, Y Harel, E Levy, A Dolitzky, AE Sagiv, S Aryal, L Suleman, ...

Kinetoplastids are infamous parasites that include trypanosomes and Leishmania species. Here, we developed an anti-Leishmania nano-drug using ultra-small functional maghemite (γ-Fe2O3) nanoparticles (NPs) that were surface-doped by [CeLn]3/4+ to enable effective binding of the polycationic polyethylenebyimine (PEI) polymer by coordinative chemistry. This resulting nano-drug is cytolytic in-vitro to both Trypanosoma brucei parasites, the causative agent of sleeping sickness, as well as to three Leishmania species. The nano-drug induces the rupture of the single lysosome present in these parasites attributed to the PEI, leading to cytolysis. To evaluate the efficacy of a “cream-based” version of the nano-drug, which was termed “Nano-Leish-IL” for topical treatment of cutaneous leishmaniasis (CL), we developed a rapid screening method utilizing T. brucei parasites involved in social motility and demonstrated …

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Jul 2021 • Optics Letters

Cross-phase modulation aberrations in time lenses

Hamootal Duadi, Avi Klein, Inbar Sibony, Sara Meir, Moti Fridman

We study the aberrations of four-wave mixing based time lenses resulting from the cross-phase modulations of the pump wave. These temporal aberrations have no spatial equivalent and are important when imaging weak signals with strong pump waves. We show that as the pump power increases, the cross-phase modulations of the pump are responsible for shifting, defocusing, and imposing temporal coma aberrations on the image. We present experimental results of these aberrations with high agreement to analytical and numerical calculations.

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Jul 2021 • 2021 IEEE 21st International Conference on Nanotechnology (NANO), 389-392, 2021

Electronic Transport Through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride

Domenikos Chryssikos, Julian M Dlugosch, Jerry A Fereiro, Takuya Kamiyama, Mordechai Sheves, David Cahen, Marc Tornow

Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants for the EGaIn top contact and for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state …

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Jul 2021 • ACS Energy Letters

High Performance Aqueous and Nonaqueous Ca-Ion Cathodes Based on Fused-Ring Aromatic Carbonyl Compounds

Munseok S Chae, Amey Nimkar, Netanel Shpigel, Yosef Gofer, Doron Aurbach

Calcium-based battery systems are promising postlithium candidates; however, only a few amenable calcium materials were reported in nonaqueous electrolytes. Here, reversible storage of Ca2+ ions in aqueous and nonaqueous electrolyte solutions is shown for crystalline 3,4,9,10-perylene tetracarboxylic dianhydride. The carbonyl functional groups and the π-electrons constitute redox centers, which can reversibly interact with divalent ions. This phenomenon was clearly uncovered by combined electrochemistry, Fourier transform infrared spectroscopy, scanning electron microscopy with energy dispersive X-ray analysis, X-ray photoelectron spectroscopy, and ex situ X-ray diffraction analyses. Very promising calcium storage performances are shown with a highly reversible capacity around ∼158 mAh g–1 at a rate of 10 mA g–1 with an average voltage of ∼2.3 V band sufficient capacity retention in saturated Ca …

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