A5018411093- Photoreceptor and optogenetics research
- Ion-surface interactions and analysis
- Neural dynamics and brain function
- Semiconductor materials and devices
- Neuroscience and Neural Engineering
- Neuroscience and Neuropharmacology Research
- Wireless Power Transfer Systems
- Plasma Diagnostics and Applications
- Elasticity and Wave Propagation
- Diamond and Carbon-based Materials Research
- Innovative Energy Harvesting Technologies
- Vehicle Noise and Vibration Control
- Material Dynamics and Properties
- Photoacoustic and Ultrasonic Imaging
- Power Quality and Harmonics
- Advanced Sensor and Energy Harvesting Materials
- Machine Fault Diagnosis Techniques
- Copper Interconnects and Reliability
- Microfluidic and Capillary Electrophoresis Applications
- Advancements in Semiconductor Devices and Circuit Design
- Nanopore and Nanochannel Transport Studies
- Photochromic and Fluorescence Chemistry
- Silicon Nanostructures and Photoluminescence
- Rheology and Fluid Dynamics Studies
- Gyrotron and Vacuum Electronics Research
Columbia University
2021-2024
New York Proton Center
2023
State Marine Technical University of St. Petersburg
2022
University of Buenos Aires
2012-2017
Fundación Ciencias Exactas y Naturales
2012-2017
Sarov Institute of Physics and Technology
2005-2007
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
1992
This paper presents a sub–0.1-mm 3 , fully integrated, injectable ultrasonic wireless device for biomedical temperature sensing.
Abstract The use of optogenetic stimulation to evoke neuronal activity in targeted neural populations—enabled by opsins with fast kinetics, high sensitivity and cell-type subcellular specificity—is a powerful tool neuroscience. However, interface the opsins, deep-brain light delivery systems are required that match scale spatial temporal control offered molecular actuators. Here we show organic light-emitting diodes can be combined complementary metal–oxide–semiconductor technology create...
We introduce a novel caged dopamine compound (RuBi-Dopa) based on ruthenium photochemistry. RuBi-Dopa has high uncaging efficiency and can be released with visible (blue-green) IR light in two-photon regime. combine photorelease of calcium imaging for an optical manipulation dendritic spines living brain slices, demonstrating that express functional receptors. This allows mapping receptors tissue exquisite spatial resolution.
A molecular dynamics model is used to understand the layer-by-layer etching of Si and SiO2 using fluorocarbon Ar+ ions. In these two-step etch processes, a nanometer-scale passivation layer grown on material’s surface low energy CFx+ ions or radicals. The top layers material are then reactive ion etched by utilizing already present surface. By repeating two steps, can be with precision rate considerably faster than what traditional atomic techniques provide. modeling results show that films...
Dopamine release and phase-amplitude cross-frequency coupling (CFC) have independently been implicated in prefrontal cortex functioning. To causally investigate whether dopamine affects comodulation between different frequencies local field potentials (LFP) recorded from the medial (mPFC) of behaving rats, we used RuBiDopa, a light-sensitive caged compound that releases neurotransmitter when irradiated with visible light. LFP power did not change any frequency band after application...
Optical neurotechnologies use light to interface with neurons and can monitor manipulate neural activity high spatial-temporal precision over large cortical extents. While there has been significant progress in miniaturizing microscope for head-mounted configurations, these existing devices are still very bulky could never be fully implanted. Any viable translation of technologies human will require a much more noninvasive, implantable form factor. Here, we leverage advances microelectronics...
A molecular dynamics model is used to investigate the interaction of energetic ions with fluorocarbon passivated Si, O, C, and H (SiOCH) based low-κ dielectrics. The includes a set interatomic potentials required for SiOCH–CFx system, where two- three-body pseudopotentials have either been obtained from published literature or computed using ab initio techniques. test structure ion simulations put together through deposition low energy SiOx+, CHy+, H+ on crystalline Si substrate. thin...
A molecular-dynamics-based model has been developed to understand etching of amorphous SiO2, with and without a fluorocarbon reactive layer, by energetic (CFx+) ions. The includes representation the solid set interatomic potentials required for SiO2–CFx interaction system. Two- three-body pseudopotentials have either obtained from published literature or computed using ab initio techniques. Stillinger–Weber potential construct is used represent in our particle trajectories are advanced...
Abstract Modern clinical practice benefits significantly from imaging technologies and much effort is directed toward making this more informative through the addition of contrast agents or reporters. Here, we report design a battery-less integrated circuit mote acting as an electronic reporter during medical ultrasound imaging. When implanted within field-of-view brightness-mode (B-mode) imager, transmits information its location backscattered acoustic energy which captured image itself. We...
We describe a complete system for optical pH manipulation and imaging. The consists of photoactive Ruthenium complex capable inducing change more than 5 units at the nanosecond time scale. A compatible imaging acquires microscopic images 1200 fps using nonexpensive commercial digital camera an LED illumination system. use as superb tool to investigate flow in Flow Injection Analysis (FIA) models.
A molecular-dynamics-based model has been used to understand etching of SiO2, with and without a fluorocarbon-polymer layer, by energetic fluorocarbon (CFx+) ions. The test structures for computational experiments are prepared starting α-quartz ([001] orientation) bombarding it low-energy ions: Ar+ ion amorphous ions fluorocarbon-polymerized structures. CF+, CF2+, CF3+ range energies angles impact then bombarded on these characterize fluorocarbon-ion etching. Results show that aggregate Si O...
Summary form only given. As the critical dimensions in microelectronics devices shrink below 20 nm, it is becoming essential to control plasma etching processes on a sub-nm scale. Although atomic layer (ALE) techniques provide such dimensional precision, ALE etch rates are slow enough be impractical for commercial applications. In this paper, we use molecular dynamics (MD) model investigate layer-by-layer of SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...