A5049061619- Physics of Superconductivity and Magnetism
- Vagus Nerve Stimulation Research
- Neuroscience and Neural Engineering
- Theoretical and Computational Physics
- EEG and Brain-Computer Interfaces
- Advanced Condensed Matter Physics
- Heart Rate Variability and Autonomic Control
- Magnetic properties of thin films
- Quantum and electron transport phenomena
- Graphene research and applications
- Magnetic and transport properties of perovskites and related materials
- Superconductivity in MgB2 and Alloys
- Advanced Memory and Neural Computing
- Iron-based superconductors research
- Nicotinic Acetylcholine Receptors Study
- Organic and Molecular Conductors Research
- Photonic Crystals and Applications
- Magnetism in coordination complexes
- Phase-change materials and chalcogenides
- High-pressure geophysics and materials
- Geophysics and Gravity Measurements
- Analytical Chemistry and Sensors
- Photonic and Optical Devices
- Superconducting Materials and Applications
- Rare-earth and actinide compounds
Feinstein Institute for Medical Research
2019-2024
Northwell Health
2019-2023
University of South Carolina
2005-2022
Donald & Barbara Zucker School of Medicine at Hofstra/Northwell
2020-2022
Icahn School of Medicine at Mount Sinai
2020
Hofstra University
2020
University of Glasgow
2019
University of Engineering & Management
2017
Institute for Systems Biology
2017
University of Maryland, College Park
2009-2016
Stable and reproducible superconductivity has been unambiguously observed in a new Tl-Ba-Cu-O system containing no group-IIIB elements. Resistance these rare-earth--free oxides starts to drop sharply above 90 K reaches zero at 81 K. Meissner flux expulsion diamagnetic shielding show bulk superconductivity. Further substitutions of elements for this may lead even higher-temperature superconductors.
Objectives Musculoskeletal pain and fatigue are common features in systemic lupus erythematosus (SLE). The cholinergic anti-inflammatory pathway is a physiological mechanism diminishing inflammation, engaged by stimulating the vagus nerve. We evaluated effects of non-invasive nerve stimulation patients with SLE musculoskeletal pain. Methods 18 ≥4 on 10 cm Visual Analogue Scale were randomised (2:1) this double-blind study to receive transcutaneous auricular (taVNS) or sham (SS) for 4...
Transition metal, oxide and heavy fermion systems background overview theory preparation characterization of samples crystallographic structures other structural properties magnetic properties.
Combining integrated circuitry with microfluidics enables lab-on-a-chip (LOC) devices to perform sensing, freeing them from benchtop equipment. However, this integration is challenging small chips, as briefly reviewed reference key metrics for package comparison. In paper we present a simple packaging method including mm-sized, foundry-fabricated dies containing complementary metal oxide semiconductor (CMOS) circuits within LOCs. The chip embedded in an epoxy handle wafer yield level,...
Cervical vagus nerve stimulation (VNS) is an emerging bioelectronic treatment for brain, metabolic, cardiovascular and immune disorders. Its desired off-target effects are mediated by different fiber populations knowledge of their engagement could guide calibration monitoring VNS therapies.Stimulus-evoked compound action potentials (eCAPs) directly provide information but currently not feasible in humans. A method to estimate through common, noninvasive physiological readouts be used place...
Abstract Background Electrical stimulation of peripheral nerves is a widely used technique to treat variety conditions including chronic pain, motor impairment, headaches, and epilepsy. Nerve achieve efficacious symptomatic relief depends on the proper selection electrical parameters recruit appropriate fibers within nerve. Recently, vagus nerve has shown promise for controlling inflammation clinical trials have demonstrated efficacy treatment inflammatory disorders. This application...
It has been suggested that all resistive-switching memory cells are memristors. The latter hypothetical, ideal devices whose resistance, as originally formulated, depends only on the net charge traverses them. Recently, an unambiguous test proposed [J. Phys. D: Appl. {\bf 52}, 01LT01 (2019)] to determine whether a given physical system is indeed memristor or not. Here, we experimentally apply such both in-house fabricated Cu-SiO2 and commercially available electrochemical metallization...
The synthesis and transport properties of the salts (TTF) (iodine)x have been investigated. These are quasi-one-dimensional compounds containing cation radicals only, in contrast to radical–anion radical systems such as (TTF)(TCNQ). phase diagram (TTF)(I)x is discussed, found consist two conducting, stoichiometric phases, x=2.0 3.0, nonconducting, nonstoichiometric x=0.71 2.3. (TTF)(I)0.71 discussed detail. This highly σRT∼350 Ω−1⋅cm−1, undergoes a sharp transition less conducting state at...
Abstract Vagus nerve stimulation (VNS) is a bioelectronic therapy for disorders of the brain and peripheral organs, tool to study physiology autonomic circuits. Selective activation afferent or efferent vagal fibers can maximize efficacy minimize off-target effects VNS. Anodal block (ABL) has been used achieve directional fiber in stimulation. However, evidence VNS with ABL scarce inconsistent, it unknown whether permits respect functional Through series vagotomies, we established...
Vagus nerve stimulation (VNS) suppresses inflammation and autoimmune diseases in preclinical clinical studies. The underlying molecular, neurological, anatomical mechanisms have been well characterized using acute electrophysiological of the vagus. However, there are several unanswered mechanistic questions about effects chronic VNS, which require solving numerous technical challenges for a long-term interface with vagus mice. Here, we describe scalable model VNS mice developed validated...
Implanted vagus nerve stimulation (VNS) delivered concurrently with upper limb rehabilitation has been shown to improve arm function after stroke. Transcutaneous auricular VNS (taVNS) offers a non-invasive alternative implanted and may provide similar therapeutic benefit. There is much discussion about the optimal approach for combining physical therapy, as such we sought determine whether taVNS administered during robotic training, specifically premotor planning stage extension movements,...
In this work, we develop a label-free electrochemical immunosensor for the detection of interleukin-6 (IL-6) in human cerebrospinal fluid (CSF) and serum diagnostic therapeutic monitoring. The IL-6 is fabricated from gold interdigitated electrode arrays (IDEAs) that are modified with antibodies direct antigen recognition capture. A rigorous surface analysis sensor architecture was conducted to ensure high structural fidelity performance. Electrochemical characterization by cyclic voltammetry...
Optical absorption (\ensuremath{\sim}1--5 eV) in rf-deposited hydrogenated (20--40 at. %) amorphous ``diamondlike'' carbon films has been studied as a function of heat treatment. For E\ensuremath{\gtrsim}2.5 eV Tauc behavior is exhibited. band gaps ${E}_{g}$ are \ensuremath{\lesssim}2.4 eV. At lower energies, tailing with an Urbach focus found. ${E}_{0}$, the width tail, quantitatively explained terms annealing temperature ${T}_{H}$. Increasing ${T}_{H}$ (<700 K) reduces hydrogen content,...
The electrical, magnetic, and optical properties of charge-transfer salts containing tetrathiafulvalene (TTF) the pseudohalides, thiocyanate (SCN) selenocyanate (SeCN), have been investigated. These are quasi-one-dimensional compounds cation radicals only, in contrast to a cation-radical-anion-radical system, such as tetracyanoquinodimethane (TCNQ). Measurements electrical conductivity, thermoelectric power, reflectivity single crystals nonstoichiometric...
Abstract Objective. Vagus nerve stimulation (VNS) is typically delivered at increasing stimulus intensity until a neurological or physiological response observed (‘threshold’) for dose calibration, preclinically and therapeutically. Factors affecting VNS thresholds have not been studied systematically. In rodent model of we measured neural responses to intensity, determined examined the effect implant- anesthesia-related factors on thresholds. Approach. acute chronic vagus implants (45 20...
High volume fractions of the n=2 and n=3 members a cuprate system general formula ${\mathrm{Hg}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Pb}}_{\mathit{x}}$${\mathrm{Ba}}_{2}$${\mathrm{Ca}}_{\mathit{n}\mathrm{\ensuremath{-}}1}$${\mathrm{Cu}}_{\mathit{n}}$${\mathrm{O}}_{2\mathit{n}\mathrm{\ensuremath{-}}2+\mathrm{\ensuremath{\delta}}}$ (with an average value x at 0.33) have been synthesized via relatively facile process using low oxygen pressures. For as-synthesized (Hg,Pb-1:2:2:3) bulk...
CMOS chips are increasingly used for direct sensing and interfacing with fluidic biological systems. While many biosensing systems have successfully combined readout signal processing passive arrays, that co-locate active circuits on a single chip offer significant advantages in size performance but increase the complexity of multi-domain design heterogeneous integration. This emerging class lab-on-CMOS also poses distinct vexing technical challenges arise from disparate requirements...
The compounds Ba2CoSi2O7, 1, and BaCo2Si2O7, 2, were obtained by heating mixtures of BaCO3, CoCO3, SiO2 in the proper stoichiometries to 1300 °C for 48 h. Both materials characterized single-crystal X-ray diffraction magnetization measurements on powder partially oriented single crystals. Each cobalt ion 1 is surrounded four oxygen atoms derived from [Si2O7]6- groups form a distorted tetrahedron. ions are bridged O−Si−O O−Si−O−Si−O an extended two-dimensional arrangement. barium arranged...
Optical, spin resonance, and high-field magnetoresistance studies of the organic charge-transfer salt ${(\mathrm{tetrathiatetracene})}_{2}$${(\mathrm{iodide})}_{3}$ [${(\mathrm{TTT})}_{2}$${\mathrm{I}}_{3}$] have been carried out. This material is a single-carrier system consisting segregated linear chains TTT cation radicals tri-iodide ions which are incommensurate with respect to each other. The ${\mathrm{I}}_{3}^{\ensuremath{-}}$ exhibit considerable disorder perpendicular chain axis....