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2019 • arXiv preprint arXiv:1906.08112

Quantum total detection probability from repeated measurements I. The bright and dark states

F Thiel, I Mualem, D Meidan, E Barkai, DA Kessler

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2019 • APS March Meeting Abstracts

Anomalous diffusion, infinite measures, and limit distributions in a class of exactly solvable stochastic processes

Guenter Radons, Takuma Akimoto, Eli Barkai

We consider stochastic processes, piecewise constant in time, which can be viewed as a gapless sequences of statistically independent box functions of duration τ i and height v i. Lengths and heights of the boxes are deterministically coupled, whereas the areas τ i v i are iid random variables. These processes are closely related to the velocity process of space-time coupled Levy walks, but can more generally be viewed as a renewal processes, where the life times τ i are not simply drawn from one given distribution, but are determined via a deterministic law by the values v i of a relevant stochastic variable. Despite its simplicity, these processes can show anomalous diffusion, or, more general, anomalous behavior of its moments. The latter can be related either to invariant densities, which are non-normalizable, or, for other parameters, to certain scaling densities. We obtained exact results for these quantities …

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2019

Part I: llumination Strategies and Imaging

Sébastien Wolf, Georges Debrégeas, Xiyu Yi, Tal-Zvi Markus, Xavier Michalet, Shimon Weiss, David Bensimon, Arnaud Gautier, Wei Zhang, Robert E Campbell, Yoshibumi Ueda, Moritoshi Sato


2019 • CARBON

ECS TRANSACTIONS

A Markevych, E Shembel, V Redko, AS FedorkovÃi, D CapkovÃi, R OriAåkovÃi, T Kazda, P Čudek, Y Polishchuk, N Zaderey, T Vergun, E Zaginayko, RD Apostolova, MA Kamenskii, SN Eliseeva, VV Kondratiev, OV Kolomoiets, EM Shembel, M Yu Koltsov, AS Fedorková, MMS Sanad, AN El-Shazly, AY Shenouda, G Topalov, B Oberschachtsiek, A Heinzel, I Kirsanova, T Pastushkin, Y Pustovalov, I Maksyuta, A Redko, S Davaryar, V Khandetskyy, J Libich, M SedlaÅíkovÃi, J Vondrák, J Máca, P Čudeka, M Fíbek, A Chekannikov, G Fafilek, R Apostolova, B Markovsky, D Aurbach, VA Sirosh, NI Globa, Yu V Shmatok, SA Kirillov, MO Danilov, IA Rusetskii, SS Fomanyuk, G Ya Kolbasov, GI Dovbeshko, AS Nikolenko

SYNTHESIS OF ARGENTUM VANADATE'S OBTAINED BY ION-EXCHANGING WAY ON THE BASE OF SYNTHESIZED ELECTROCHEMICALLY V 2 O 5-X· YH 2 O, AND THEIR BEHAVIOR IN THE ELECTRODES FOR LITHIUM ACCUMULATOR

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2019 • Nanomaterials 9 (12), 1788, 2019

Second harmonic generation for moisture monitoring in dimethoxyethane at a gold-solvent interface using plasmonic structures


2019 • APS March Meeting Abstracts

Lyapunov exponents, ergodization time and out-of-time-order correlators in chaotic many-particle systems from Loschmidt echoes

Andrei Tarkhov, Sandro Wimberger, Boris Fine

We propose an experimentally realizable method to demonstrate Lyapunov instability and to estimate ergodization time in chaotic many-particle systems by monitoring equilibrium noise of virtually any observable quantity before and after time reversal of dynamics (Loschmidt echo). In the quantum regime, the quantity of interest for the method is a counterpart of out-of-time-order correlators (OTOCs). The ergodization time is defined as the characteristic time required to extract the largest Lyapunov exponent from a system's dynamics. The proposal focuses specifically on a lattice of coupled Bose-Einstein condensates in the classical regime describable by the discrete Gross-Pitaevskii equation. We support our theoretical analysis by direct numerical simulations demonstrating that the largest Lyapunov exponent and the ergodization time can indeed be extracted from the Loschmidt echo routine.

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2019

PROGRESS IN BIOMEDICAL OPTICS AND IMAGING-PROCEEDINGS OF SPIE

I Yariv, H Duadi, D Fixler, M Tiferet, H Pinhas, O Wagner, Y Danan, M Danino, Z Zalevsky, M Sinvani, E Nepomnyashchaya, E Velichko, T Bogomaz, M Beiderman, M Motiei, R Popovtzer, C Chen, F Wang, S Wen, Y Liu, X Shan, D Jin, T Cao, SM Weiss, C Carfano, GA Rodriguez, MH Choudhury, FO Afzal, E Haimov, O Shefi, H Weitman, Y Harel, S Polani, D Zitoun, JP Lellouche, D Piao, A Klein, S Shahal, M Fridman, C Tzror-Azankot, T Dreifuss, TS Ben-Gal, T Sadan, A Jacob, O Betzer, M Shilo, M Chenchiliyan, HK Sadhanala, K Sharma, A Gedanken, A Le Marois


2019 • APS March Meeting Abstracts

Defect screening in faceted emulsion droplets

Ireth García-Aguilar, Piermarco Fonda, Luca Giomi, Eli Sloutskin

Oil emulsion droplets in water have been observed to spontaneously deform into polyhedral shapes at temperatures where the surfactant interface freezes while the bulk oil and water remain liquid. The interface monolayer crystalizes into a hexagonal lattice, which is topologically constrained to accomodate a certain number of defects, namely disclinations. Additional defects, called dislocations, are also expected to be found in crystals with large number of particles. Dislocations are not only thermally induced but, more importantly, they are known to screen the large stresses around disclinations by forming chain-like structures at their vicinity. We address the problem of faceting droplets by studying the interplay between the interface geometry and the arragement of dislocations. We have found that the coupling between the distribution of crystal defects, surface curvature and entropy is key to understand the …

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2019 • Frontiers in Psychiatry

A-to-I RNA editing within cortico-limbic brain regions is regulated in response to chronic social defeat stress in mice

Alec LW Dick, Khen Khermesh, Evan Paul, Fabian Stamp, Erez Y Levanon, Alon Chen

Adenosine to inosine (A-to-I) RNA editing is a co/post-transcriptional modification of double stranded RNA, catalysed by the adenosine deaminase acting on RNA (ADAR) family of enzymes, which results in recognition of inosine as guanosine by translational and splicing machinery causing potential recoding events in amino acid sequences. A-to-I editing is prominent within brain-specific transcripts and dysregulation of editing at several well-studied loci (e.g., Gria2, Htr2c) has been implicated in acute and chronic stress in rodents as well as neurological (e.g., Alzheimer’s) and psychopathological disorders such as schizophrenia and major depressive disorder. However, only a small fraction of recoding sites has been investigated within the brain following stress and our understanding of the role of RNA editing in transcriptome regulation following environmental stimuli remains poorly understood. Thus, we aimed …

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2019 • Anesthesiology

Neurotoxicity of Ketamine and the Neuroprotective Effects of Neurosteroids on Human Cultured Neurons

Donald Penning, Xin Hong, Simona L Cazacu, Chaya Brodie

Background: There are compelling evidence from animal models and retrospective clinical studies that early exposure to clinically relevant general anesthetic medications interferes with brain development and may lead to permanent cognitive impairments. 1 2 At least in immature rodents, exposure to either NMDA-type glutamate receptor antagonists or positive modulators of GABAA receptors can lead to increased apoptosis. Blockade of NMDA receptors by ketamine in the developing rodent brain causes excessive apoptosis. 2 Additionally, ketamine inhibits proliferation of neural stem cells and disturbs normal neurogenesis. 3 However, it is currently not clear whether similar exposures can similarly affect children and what are the mechanisms that mediate these effects. Neurosteroids such as allopregnanolone (ALLO) have anesthetic properties and have been shown to be neuroprotective. 4 Understanding their neuroprotective role in anesthetic induced injury may have major implications in decreasing anesthetic-induced brain damage or designing potentially less toxic anesthetic agents. 5Methods: In this project we studied the effects of ketamine on human neural stem cells, and neurons. We have generated immortalized human neural stem cells (NSCs), and neurons that maintain the phenotypes and functions of the original cells.Results: Using human neural cells in culture, we demonstrated that ketamine induced a dose-dependent decrease in the proliferation of NSCs and an increase in cell death of neurons (Figure). We also demonstrate that ALLO (1 μM) protected NSCs from the inhibitory effect of ketamine on cell proliferation. Moreover …

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2019 • Materials Horizons

When defects become ‘dynamic’: halide perovskites: a new window on materials?

Yevgeny Rakita, Igor Lubomirsky, David Cahen

Although Pb Halide perovskites (HaPs) can be prepared as organic electronic materials, they resemble top-quality inorganic semiconductors, especially with respect to their low defect densities, as derived from optical and electronic transport studies. Among causes for such low defect densities were ‘defect-tolerance’ (proposed) and ‘self-healing’ (experimentally identified). We show that HaPs are likely an example of a class of materials that cannot support static bulk defect densities significantly above thermodynamically-dictated densities. The reasons are (a) the free energy to form HaPs (from binary halides) is less than the formation energies of (static) defects in them and (b) the small kinetic stabilization of such defects. We summarize the evidence for such a situation and conclude that higher defect densities in polycrystalline films likely result from the (expected) smaller defect formation energy at surfaces and …

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2019 • Applied Physics Letters

Split-well direct-phonon terahertz quantum cascade lasers

Asaf Albo, Yuri V Flores, Qing Hu, John L Reno

We present a so-called “split-well direct-phonon” active region design for terahertz quantum cascade lasers (THz-QCLs). Lasers based on this scheme profit from both elimination of high-lying parasitic bound states and resonant-depopulation of the lower laser level. Negative differential resistance is observed at room temperature, which indicates that each module behaves as a clean 3-level system. We further use this design to investigate the impact of temperature on the dephasing time of GaAs/AlGaAs THz-QCLs.

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2019

In situ synthe

A Imangaliyeva, Y Mastai, G Seilkhanova


2019 • Nanoscale

Modulating the height of carbon nanotube forests by controlling the molybdenum thin film reservoir thickness

E Shawat Avraham, AS Westover, O Girshevitz, CL Pint, GD Nessim

Many catalyst materials have been tried to synthesize ultra-long carbon nanotubes (CNTs) by extending catalyst lifetime and delaying growth termination. We propose a time-controlled, variable composition iron–molybdenum catalyst system, where the diffusion of molybdenum (as a thin layer reservoir) is mediated by the alumina underlayer, to reach and to slowly alloy with the Fe catalyst on the surface during the thermal process. This technique enhanced both the catalytic activity and the catalytic lifetime to grow CNT carpets with heights up 5 mm, compared to a maximum of approximately 1.5 mm for a regular sample (without Mo reservoir). Moreover, the CNT height increased with the thickness of the Mo thin layer reservoir for thicknesses from 10 nm to 30 nm. We discuss this new growth mechanism using high resolution transmission microscopy (HRTEM) images of cross-section lamellas and Rutherford Back …

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2019 • AUTEX2019: 19th World Textile Conference on Textiles at the Crossroads, 11 …, 2019

Designing of carbon nanotubes/cotton fabric composite for e-textiles: effect of carbon nanotubes-lenght on electroconductive properties

V Trovato, E Teblum, Y Kostikov, A Pedrana, V Re, GD Nessim, G Rosace

Nonfunctionalized carbon nanotubes featuring length over than 500 μm, were mixed with an amino-functionalized sol-gel precursor and a highly volatile solvent in order to obtain a well-dispersed solution. Finally, a thickener was added to the nanotubes dispersion thus obtaining a viscous paste, which was deposited on cotton fabrics through knife-over-roll technique thus achieving a surface coating with high electrical conductivity. The as-prepared conductive cotton fabrics were characterized by different chemical-physical techniques and showed a sheet resistance of about 9.5• 102 Ω/sq. Developed conductive fabrics can find applications as conductive material or wearable sensors.

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2019 • Nanoscale Advances

Amino acid-based ionic liquids as precursors for the synthesis of chiral nanoporous carbons

Sapir Shekef Aloni, Milena Perovic, Michal Weitman, Reut Cohen, Martin Oschatz, Yitzhak Mastai

The synthesis of chiral nanoporous carbons based on chiral ionic liquids (CILs) of amino acids as precursors is described. Such unique precursors for the carbonization of CILs yield chiral carbonaceous materials with high surface area (≈620 m2 g−1). The enantioselectivities of the porous carbons are examined by advanced techniques such as selective adsorption of enantiomers using cyclic voltammetry, isothermal titration calorimetry, and mass spectrometry. These techniques demonstrate the chiral nature and high enantioselectivity of the chiral carbon materials. Overall, we believe that the novel approach presented here can contribute significantly to the development of new chiral carbon materials that will find important applications in chiral chemistry, such as in chiral catalysis and separation and in chiral sensors. From a scientific point of view, the approach and results reported here can significantly deepen …

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2019 • bioRxiv

Spatiotemporal analysis of human rabies exposure in Colombia during ten years: A challenge for implementing social inclusion in its surveillance and prevention

Marcela Rocío Arias Caicedo, DA Xavier, Catalina Alejandra Arias Caicedo, EM Andrade, I Abel, Stefania Martucciello, Maria Giuseppina Turturo, Sara Cioffi, Li Chen, Antonio Baldini, Elizabeth Illingworth, Elsa Beyene Gebreslassie, Anteneh T Tefera, Diriba Muleta, Solomon K Fantaye, Gary M Wessel, Alison J Gibberd, Judy M Simpson, Jocelyn Jones, Robyn Williams, Fiona Stanley, Sandra J Eades, Meruyert Beknazarova, Joel LN Barratt, Richard S Bradbury, Meredith Lane, Harriet Whiley, Kirstin Ross, Monica Varela, Michiel van der Vaart, Arwin Groenewoud, Annemarie H Meijer, Itamar Kanter, Gur Yaari, Tomer Kalisky, Xiao Hu, Iddo Friedberg, Sara Tomiolo, Mark C Bilton, Katja Tielbörger, Savani Anbalagan, Janna Blechman, Michael Gliksberg, Ron Rotkopf, Tali Dadosh, Gil Levkowitz


2019 • Lab on a Chip

Drag controlled formation of polymeric colloids with optical traps

Erel Lasnoy, Omer Wagner, Eitan Edri, Hagay Shpaisman

Optical trapping is a powerful optical manipulation technique for controlling various mesoscopic systems that allows formation of tailor-made polymeric micro-sized colloids by directed coalescence of nucleation sites. However, control over the size of a single colloid requires constant monitoring of the growth process and deactivation of the optical trap once it reaches the required dimensions. Moreover, producing more than one colloid requires moving the sample to a pristine location where the process must be repeated. Here, we present a novel method for continuous control over formation of polydimethylsiloxane colloids based on directed coalescence induced by optical traps under flow inside microfluidic channels. Once the drag force on a growing colloid exceeds the trapping force, it leaves the optical trap, and a new colloid starts to form at the same location. We demonstrate repeatability of the process and …

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2019 • Chemical Communications

Simultaneous laser-induced synthesis and micro-patterning of a metal organic framework

Nina Armon, Ehud Greenberg, Eitan Edri, Avraham Kenigsberg, Silvia Piperno, Omree Kapon, Ohad Fleker, Ilana Perelshtein, Gili Cohen-Taguri, Idan Hod, Hagay Shpaisman

Micro-patterning of a metal organic framework (MOF) from a solution of precursors is achieved by local laser heating. Nano-sized MOFs are formed, followed by rapid assembly due to convective flows around a heat-induced micro-bubble. This laser-induced bottom-up technique is the first to suggest simultaneous synthesis and micro-patterning of MOFs, alleviating the need for pre-preparation and stabilization.

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2019 • Journal of Materials Chemistry A

Li/Fe substitution in Li-rich Ni, Co, Mn oxides for enhanced electrochemical performance as cathode materials

Juliette Billaud, Denis Sheptyakov, Sébastien Sallard, Daniela Leanza, Michael Talianker, Judith Grinblat, Hadar Sclar, Doron Aurbach, Petr Novák, Claire Villevieille

Li-rich nickel cobalt manganese (NCM) oxides are among the most promising cathode materials for lithium-ion batteries owing to their high specific charges and operating voltages. However, their crystal structures are unstable upon prolonged cycling, leading to a collapse of their electrochemical performance. In this study, we investigated Fe doping of Li-rich NCM materials and explored various Li/Fe ratios. Compared with the reference Li-rich NCM material, the Li1.16(Ni0.18Co0.10Mn0.52Fe0.02)O2 composition exhibited a higher specific charge, potential drop mitigation at fast cycling rates, and an enhanced rate capability. At a rate of 4C, this composition exhibited a specific charge of 150 mA h g−1, which was as much as 50% higher than that of the reference (100 mA h g−1). Neutron and X-ray diffraction data for compounds with different Fe doping concentrations indicated that the crystallographic structure was …

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2019 • bioRxiv

Spatiotemporal analysis of human rabies exposure in Colombia during ten years: A challenge for implementing social inclusion in its surveillance and prevention

Marcela Rocío Arias Caicedo, DA Xavier, Catalina Alejandra Arias Caicedo, EM Andrade, I Abel, Stefania Martucciello, Maria Giuseppina Turturo, Sara Cioffi, Li Chen, Antonio Baldini, Elizabeth Illingworth, Elsa Beyene Gebreslassie, Anteneh T Tefera, Diriba Muleta, Solomon K Fantaye, Gary M Wessel, Alison J Gibberd, Judy M Simpson, Jocelyn Jones, Robyn Williams, Fiona Stanley, Sandra J Eades, Meruyert Beknazarova, Joel LN Barratt, Richard S Bradbury, Meredith Lane, Harriet Whiley, Kirstin Ross, Monica Varela, Michiel van der Vaart, Arwin Groenewoud, Annemarie H Meijer, Itamar Kanter, Gur Yaari, Tomer Kalisky, Xiao Hu, Iddo Friedberg, Sara Tomiolo, Mark C Bilton, Katja Tielbörger, Savani Anbalagan, Janna Blechman, Michael Gliksberg, Ron Rotkopf, Tali Dadosh, Gil Levkowitz


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