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Oct 2023 • 2023 IEEE Nanotechnology Materials and Devices Conference (NMDC), 660-660, 2023

Unconventional Formation of a Zintl Compound in Nanowire Form

Man Suk Song, Lothar Houben, Nadav Rothem, Xi Wang, Beena Kalisky, Magdalena A Załuska-Kotur, Hyeonhu Bae, Binghai Yan, Ryszard Buczko, Perla Kacman, Haim Beidenkopf, Hadas Shtrikman

Nanowires consisting of Eu 3 In 2 As 4 were grown by MBE using an unconventional method. Eu 3 In 2 P 4 and Eu 3 InEu 3 were suggested to be an example of material with new magnetic Zintl phases already 20 years ago [1]. Recently, a vast selection of newly emerging compounds, in particular compounds based on InAs with the addition of strontium, barium or europium, such as Eu 3 In 2 As 4 have been included into the Zintl family of materials and widely studied [2]. Extensively conducted research showed a large variety of unique magnetic, electronic, and topological properties both in bulk and layers of Zintl materials. Here we present the formation of a Zintl phase obtained for the first time in nanowires. The properties of these nanowires, including their composition, crystal structure and magnetic order, were thoroughly characterized. The experimental study was supported by theoretical simulations related …

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Oct 2023 • Physical Chemistry of Semiconductor Materials and Interfaces XXII, PC126500Q, 2023

All-optical photoacoustic measurement of localized chirality in crystal suspensions

Gil Otis, Matan Benyamin, Yitzhak Mastai, Zeev Zalevsky

In this research we present a novel method to measure local optical dichroism in opaque crystal powder suspensions using the photoacoustic effect. Our method is based upon the laser speckle contrast technique, a novel technique to perform photoacoustic measurements that do not require contact with the sample. The main novelty of our work is the development of a simple statistical approach for measuring the chirality of crystal suspensions using the photoacoustic effect, which does not require arranging the crystals with a specific orientation on surfaces. A model chiral system was used to demonstrate our method, we have used Cobalt doped L-Histidine crystals that are photoacoustic active and established our ability to measure their optical dichroism in solution under completely random orientation.

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Oct 2023 • ACS Omega

Revealing the DNA Binding Modes of CsoR by EPR Spectroscopy

Yasmin Igbaria-Jaber, Lukas Hofmann, Lada Gevorkyan-Airapetov, Yulia Shenberger, Sharon Ruthstein

In pathogens, a unique class of metalloregulator proteins, called gene regulatory proteins, sense specific metal ions that initiate gene transcription of proteins that export metal ions from the cell, thereby preventing toxicity and cell death. CsoR is a metalloregulator protein found in various bacterial systems that “sense” Cu(I) ions with high affinity. Upon copper binding, CsoR dissociates from the DNA promoter region, resulting in initiation of gene transcription. Crystal structures of CsoR in the presence and absence of Cu(I) from various bacterial systems have been reported, suggesting either a dimeric or tetrameric structure of these helical proteins. However, structural information about the CsoR-DNA complex is missing. Here, we applied electron paramagnetic resonance (EPR) spectroscopy to follow the conformational and dynamical changes that Mycobacterium tuberculosis CsoR undergoes upon DNA binding in …

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Oct 2023 • Chemistry of Materials

Theoretical Insights into High-Entropy Ni-Rich Layered Oxide Cathodes for Low-Strain Li-Ion Batteries

Amreen Bano, Malachi Noked, Dan Thomas Major

Ni-rich, Co-free layered oxide cathode materials are promising candidates for next-generation Li-ion batteries due to their high energy density. However, these cathode materials suffer from rapid capacity fading during electrochemical cycling. To overcome this shortcoming, so-called high-entropy (HE) materials, which are obtained by incorporating multiple dopants, have been suggested. Recent experimental work has shown that HE Ni-rich cathode materials can offer excellent capacity retention on cycling, although a thorough rationale for this has yet to be provided. Here, we present classical and first-principles calculations to elucidate the salient features of HE layered oxides as cathode materials in Li-ion batteries. We suggest that a combination of five prime factors may be responsible for the enhanced performance of HE Ni-rich layered oxide cathode materials over other Ni-rich cathodes: (1) low crystal lattice …

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Oct 2023 • Colloids and Interfaces

Recyclable Adsorbents for Potash Brine Desalination Based on Silicate Powder: Application, Regeneration and Utilization

Akmaral B Rakhym, Zarina Ye Baranchiyeva, Aruzhan K Kenessova, Bagashar B Zhaksybai, Diana N Dauzhanova, Yitzhak Mastai, Gulziya A Seilkhanova

Silicate mineral powders (SMP) from weathered granite soil from Kazakhstan are proposed for the desalination of potash brines containing sodium, potassium and chloride ions. Batch adsorption experiments using acid-treated silicate (AS) achieved a Na+/K+/Cl− recovery of ~13/28/6 mg/g. An isothermal study best fitted the Freundlich and Dubinin–Radushkevich models for Na+ and K+/Cl−. The kinetic data were best modeled by pseudo-second-order kinetics for Na+/K+ and pseudo-first-order for Cl−. Thermodynamic calculations showed spontaneity under natural conditions. For Na+/K+, physisorption is accompanied by ion exchange. To study the possibility of sorbent reuse, several cycles of K+/Na+ adsorption–desorption were carried out under optimal conditions. AS selectively adsorbed potassium ions, maintaining a high effectiveness during five cycles providing K-form silicate fertilizers. Leachates of spent AS contain high concentrations of K/Na/Ca/Mg and other microelements essential for plants. Thus, SMP resolve two issues: the desalination of brine and the provision of fertilizer.

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Oct 2023 • Nature Nanotechnology

High-energy all-solid-state lithium batteries enabled by Co-free LiNiO2 cathodes with robust outside-in structures

Longlong Wang, Ayan Mukherjee, Chang-Yang Kuo, Sankalpita Chakrabarty, Reut Yemini, Arrelaine A Dameron, Jaime W DuMont, Sri Harsha Akella, Arka Saha, Sarah Taragin, Hagit Aviv, Doron Naveh, Daniel Sharon, Ting-Shan Chan, Hong-Ji Lin, Jyh-Fu Lee, Chien-Te Chen, Boyang Liu, Xiangwen Gao, Suddhasatwa Basu, Zhiwei Hu, Doron Aurbach, Peter G Bruce, Malachi Noked

A critical current challenge in the development of all-solid-state lithium batteries (ASSLBs) is reducing the cost of fabrication without compromising the performance. Here we report a sulfide ASSLB based on a high-energy, Co-free LiNiO2 cathode with a robust outside-in structure. This promising cathode is enabled by the high-pressure O2 synthesis and subsequent atomic layer deposition of a unique ultrathin LixAlyZnzOδ protective layer comprising a LixAlyZnzOδ surface coating region and an Al and Zn near-surface doping region. This high-quality artificial interphase enhances the structural stability and interfacial dynamics of the cathode as it mitigates the contact loss and continuous side reactions at the cathode/solid electrolyte interface. As a result, our ASSLBs exhibit a high areal capacity (4.65 mAh cm−2), a high specific cathode capacity (203 mAh g−1), superior cycling stability (92% capacity retention …

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Oct 2023 • ACS Applied Bio Materials

Bioimaging based on Poly (ethylenimine)-Coated Carbon Dots and Gold Nanoparticles for pH Sensing and Metal Enhanced Fluorescence

Shweta Pawar, Hamootal Duadi, Moran Friedman Gohas, Yoram Cohen, Dror Fixler

When exposed to specific light wavelengths, carbon dots (CDs), which tend to be fluorescent, can emit colorful light. It provides them with a lot of adaptability for different applications including bioimaging, optoelectronics, and even environmental sensing. Poly(ethylenimine) (PEI) coated carbon dots (PEI-CDs) with a long emission wavelength were synthesized via the hydrothermal method. The resultant CDs show strong fluorescence with quantum yield up to 20.2%. The PEI-CDs exist with distinct pH-sensitive features with pH values in the range of 2–14. The optical characteristics of CDs are pH-responsive due to the presence of different amine groups on PEI, which is a functional polycationic polymer. One of the most widely employed nanoparticles for improving the fluorescence plasmonic characteristics of a nanocomposite is gold. Gold nanoparticles were coupled with PEI-CDs in this assay by using the EDC …

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Oct 2023 • 244th ECS Meeting (October 8-12, 2023)

High Entropy Configuration Strategy: Boosting Kinetics, Air Stability and Suppressing Phase Transition in Co-Free O3-Layered Cathode for Sodium-Ion Batteries

Akanksha Joshi, Sankalpita Chakrabarty, Sri Harsha Akella, Arka Saha, Ayan Mukherjee, Rosy Sharma, Malachi Noked


Oct 2023 • Nature Communications

CRISPR-Cas9 engineering of the RAG2 locus via complete coding sequence replacement for therapeutic applications

Daniel Allen, Orli Knop, Bryan Itkowitz, Nechama Kalter, Michael Rosenberg, Ortal Iancu, Katia Beider, Yu Nee Lee, Arnon Nagler, Raz Somech, Ayal Hendel

RAG2-SCID is a primary immunodeficiency caused by mutations in Recombination-activating gene 2 (RAG2), a gene intimately involved in the process of lymphocyte maturation and function. ex-vivo manipulation of a patient’s own hematopoietic stem and progenitor cells (HSPCs) using CRISPR-Cas9/rAAV6 gene editing could provide a therapeutic alternative to the only current treatment, allogeneic hematopoietic stem cell transplantation (HSCT). Here we show an innovative RAG2 correction strategy that replaces the entire endogenous coding sequence (CDS) for the purpose of preserving the critical endogenous spatiotemporal gene regulation and locus architecture. Expression of the corrective transgene leads to successful development into CD3+TCRαβ+ and CD3+TCRγδ+ T cells and promotes the establishment of highly diverse TRB and TRG repertoires in an in-vitro T-cell differentiation platform. Thus, our …

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Oct 2023 • bioRxiv

Resolving haplotype variation and complex genetic architecture in the human immunoglobulin kappa chain locus in individuals of diverse ancestry

Eric Engelbrecht, Oscar L Rodriguez, Kaitlyn Shields, Steven Schulze, David Tieri, Uddalok Jana, Gur Yaari, William Lees, Melissa L Smith, Corey T Watson

Immunoglobulins (IGs), critical components of the human immune system, are composed of heavy and light protein chains encoded at three genomic loci. The IG Kappa (IGK) chain locus consists of two large, inverted segmental duplications. The complexity of IG loci has hindered effective use of standard high-throughput methods for characterizing genetic variation within these regions. To overcome these limitations, we leverage long-read sequencing to create haplotype-resolved IGK assemblies in an ancestrally diverse cohort (n=36), representing the first comprehensive description of IGK haplotype variation at population-scale. We identify extensive locus polymorphism, including novel single nucleotide variants (SNVs) and a common novel ~24.7 Kbp structural variant harboring a functional IGKV gene. Among 47 functional IGKV genes, we identify 141 alleles, 64 (45.4%) of which were not previously curated. We report inter-population differences in allele frequencies for 14 of the IGKV genes, including alleles unique to specific populations within this dataset. Finally, we identify haplotypes carrying signatures of gene conversion that associate with enrichment of SNVs in the IGK distal region. These data provide a critical resource of curated genomic reference information from diverse ancestries, laying a foundation for advancing our understanding of population-level genetic variation in the IGK locus.

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Oct 2023 • Laser & Photonics Reviews 17 (12), 2200029, 2023

Roadmap on Label‐Free Super‐Resolution Imaging

Vasily N Astratov, Yair Ben Sahel, Yonina C Eldar, Luzhe Huang, Aydogan Ozcan, Nikolay Zheludev, Junxiang Zhao, Zachary Burns, Zhaowei Liu, Evgenii Narimanov, Neha Goswami, Gabriel Popescu, Emanuel Pfitzner, Philipp Kukura, Yi‐Teng Hsiao, Chia‐Lung Hsieh, Brian Abbey, Alberto Diaspro, Aymeric LeGratiet, Paolo Bianchini, Natan T Shaked, Bertrand Simon, Nicolas Verrier, Matthieu Debailleul, Olivier Haeberlé, Sheng Wang, Mengkun Liu, Yeran Bai, Ji‐Xin Cheng, Behjat S Kariman, Katsumasa Fujita, Moshe Sinvani, Zeev Zalevsky, Xiangping Li, Guan‐Jie Huang, Shi‐Wei Chu, Omer Tzang, Dror Hershkovitz, Ori Cheshnovsky, Mikko J Huttunen, Stefan G Stanciu, Vera N Smolyaninova, Igor I Smolyaninov, Ulf Leonhardt, Sahar Sahebdivan, Zengbo Wang, Boris Luk'yanchuk, Limin Wu, Alexey V Maslov, Boya Jin, Constantin R Simovski, Stephane Perrin, Paul Montgomery, Sylvain Lecler

Label‐free super‐resolution (LFSR) imaging relies on light‐scattering processes in nanoscale objects without a need for fluorescent (FL) staining required in super‐resolved FL microscopy. The objectives of this Roadmap are to present a comprehensive vision of the developments, the state‐of‐the‐art in this field, and to discuss the resolution boundaries and hurdles that need to be overcome to break the classical diffraction limit of the label‐free imaging. The scope of this Roadmap spans from the advanced interference detection techniques, where the diffraction‐limited lateral resolution is combined with unsurpassed axial and temporal resolution, to techniques with true lateral super‐resolution capability that are based on understanding resolution as an information science problem, on using novel structured illumination, near‐field scanning, and nonlinear optics approaches, and on designing superlenses based …

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Oct 2023 • Physical Chemistry of Semiconductor Materials and Interfaces XXII, PC126500Q, 2023

All-optical photoacoustic measurement of localized chirality in crystal suspensions

Gil Otis, Matan Benyamin, Yitzhak Mastai, Zeev Zalevsky

In this research we present a novel method to measure local optical dichroism in opaque crystal powder suspensions using the photoacoustic effect. Our method is based upon the laser speckle contrast technique, a novel technique to perform photoacoustic measurements that do not require contact with the sample. The main novelty of our work is the development of a simple statistical approach for measuring the chirality of crystal suspensions using the photoacoustic effect, which does not require arranging the crystals with a specific orientation on surfaces. A model chiral system was used to demonstrate our method, we have used Cobalt doped L-Histidine crystals that are photoacoustic active and established our ability to measure their optical dichroism in solution under completely random orientation.

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Oct 2023 • Nano Letters

Unveiling Local Optical Properties Using Nanoimaging Phase Mapping in High-Index Topological Insulator Bi2Se3 Resonant Nanostructures

Sukanta Nandi, Shany Z Cohen, Danveer Singh, Michal Poplinger, Pilkhaz Nanikashvili, Doron Naveh, Tomer Lewi

Topological insulators are materials characterized by an insulating bulk and high mobility topologically protected surface states, making them promising candidates for future optoelectronic and quantum devices. Although their electronic properties have been extensively studied, their mid-infrared (MIR) properties and prospective photonic capabilities have not been fully uncovered. Here, we use a combination of far-field and near-field nanoscale imaging and spectroscopy to study chemical vapor deposition-grown Bi2Se3 nanobeams (NBs). We extract the MIR optical constants of Bi2Se3, revealing refractive index values as high as n ∼ 6.4, and demonstrate that the NBs support Mie resonances across the MIR. Local near-field reflection phase mapping reveals domains of various phase shifts, providing information on the local optical properties of the NBs. We experimentally measure up to 2π phase-shift across the …

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Oct 2023 • 244th ECS Meeting (October 8-12, 2023), 2023

G01-ALD for Thermoelectrics

Oscar van der Straten, Andrea Illiberi, Malachi Noked


Oct 2023 • Angewandte Chemie International Edition

Polymeric Carbon nitride with chirality inherited from supramolecular assemblies

Adi Azoulay, Sapir Shekef Aloni, Lidan Xing, Ayelet Tashakory, Yitzhak Mastai, Menny Shalom

The facile synthesis of chiral materials is of paramount importance for various applications. Supramolecular preorganization of monomers for thermal polymerization has been proven as an effective tool to synthesize carbon and carbon nitride‐based (CN) materials with ordered morphology and controlled properties. However, the transfer of an intrinsic chemical property, such as chirality from supramolecular assemblies to the final material after thermal condensation, was not shown. Here, we report the large‐scale synthesis of chiral CN materials capable of enantioselective recognition. To achieve this, we designed supramolecular assemblies with a chiral center that remains intact at elevated temperatures. The optimized chiral CN demonstrates an enantiomeric preference of ca. 14 %; CN electrodes were also prepared and show stereoselective interactions with enantiomeric probes in electrochemical …

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Oct 2023 • 244th ECS Meeting (October 8-12, 2023)

A Scalable Approach to Synthesize Cobalt-Free LNMO Cathode Materials for High Energy Density Lithium Ion Batteries

Tao Hu, Yan Lin, Pekka Tynjälä, Shubo Wang, Gayathri Peta, Harishchandra Singh, Doron Aurbach, Ulla Lassi


Oct 2023 • Frontiers in Microbiology

Corrigendum: Comparative genomics of Bacillus cereus sensu lato spp. biocontrol strains in correlation to in-vitro phenotypes and plant pathogen antagonistic capacity

Maya Moshe, Chhedi Lal Gupta, Rakeshkumar Manojkumar Jain, Noa Sela, Dror Minz, Ehud Banin, Omer Frenkel, Eddie Cytryn

MM: conducted experiments, data and bioinformatics analyses, and wrote manuscript. CG: bioinformatics analysis. NS: genome assembly. DM: project idea and funding acquisition. EB: supervision. EC: experimental design, supervision, funding acquisition, writing, and revisions. OF: participating in experimental design, supervision, funding acquisition, writing, and revisions. RJ: isolation and conducting of the initial in-vitro antifungal analysis on three of the five bacteria investigated in the manuscript. All authors contributed to the article and approved the submitted version.

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Oct 2023 • Nano Letters

Unveiling Local Optical Properties Using Nanoimaging Phase Mapping in High-Index Topological Insulator Bi2Se3 Resonant Nanostructures

Sukanta Nandi, Shany Z Cohen, Danveer Singh, Michal Poplinger, Pilkhaz Nanikashvili, Doron Naveh, Tomer Lewi

Topological insulators are materials characterized by an insulating bulk and high mobility topologically protected surface states, making them promising candidates for future optoelectronic and quantum devices. Although their electronic properties have been extensively studied, their mid-infrared (MIR) properties and prospective photonic capabilities have not been fully uncovered. Here, we use a combination of far-field and near-field nanoscale imaging and spectroscopy to study chemical vapor deposition-grown Bi2Se3 nanobeams (NBs). We extract the MIR optical constants of Bi2Se3, revealing refractive index values as high as n ∼ 6.4, and demonstrate that the NBs support Mie resonances across the MIR. Local near-field reflection phase mapping reveals domains of various phase shifts, providing information on the local optical properties of the NBs. We experimentally measure up to 2π phase-shift across the …

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Oct 2023 • Colloids and Surfaces B: Biointerfaces

Siliplant1 B-domain precipitates silica spheres, aggregates, or gel, depending on Si-precursor to peptide ratios

Vincent Otieno Ayieko, Lilian Cohen, Sabrina Diehn, Gil Goobes, Rivka Elbaum

Silica is extensively deposited by plants, however, only little is known about the molecular control over this process. Siliplant1 is the only known plant protein to precipitate biosilica. The protein contains seven repeats made of three domains. One of the domains exhibits a conserved sequence, which catalyzes silica precipitation in vitro. Here, silica was synthesized by the activity of a peptide carrying this conserved sequence. Infrared spectroscopy and thermal gravimetric analyses showed that the peptide was bound to the mineral. Scanning electron microscopy showed that silica-peptide particles of 22 ± 4 nm aggregated to spherical structures of 200 - 300 nm when the ratio of silicic acid to the peptide was below 183:1 molecules. When the ratio was about 183:1, similar particles aggregated into irregular structures, and silica gel formed at higher ratios. Solid-state NMR spectra indicated that the irregular aggregates …

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Oct 2023 • arXiv preprint arXiv:2210.02743

Tracking nanoscale perturbation in active disordered media

Renu Yadav, Patrick Sebbah, Maruthi M Brundavanam

The disorder induced feedback makes random lasers very susceptible to any changes in the scattering medium. The sensitivity of the lasing modes to perturbations in the disordered systems have been utilized to map the regions of perturbation. A tracking parameter, that takes into account the cumulative effect of changes in the spatial distribution of the lasing modes of the system has been defined to locate the region in which a scatterer is displaced by a few nanometers. We show numerically that the precision of the method increases with the number of modes. The proposed method opens up the possibility of application of random lasers as a tool for monitoring locations of nanoscale displacement which can be useful for single particle detection and monitoring.

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