A5027887686- Microfluidic and Bio-sensing Technologies
- Microfluidic and Capillary Electrophoresis Applications
- Nanopore and Nanochannel Transport Studies
- Electrohydrodynamics and Fluid Dynamics
- Advanced MEMS and NEMS Technologies
- Electrowetting and Microfluidic Technologies
- Advanced Optical Imaging Technologies
- Fluid Dynamics and Thin Films
- Nonlinear Dynamics and Pattern Formation
- Wastewater Treatment and Nitrogen Removal
- Tactile and Sensory Interactions
- Liquid Crystal Research Advancements
- Advanced Optical Sensing Technologies
- Magnetic and Electromagnetic Effects
- Solidification and crystal growth phenomena
- Constructed Wetlands for Wastewater Treatment
- Acoustic Wave Resonator Technologies
- Photoreceptor and optogenetics research
- Metamaterials and Metasurfaces Applications
- Mechanical and Optical Resonators
- Plant nutrient uptake and metabolism
Cornell University
2025
IBM Research - Zurich
2019-2024
Technion – Israel Institute of Technology
2020-2023
We demonstrate theoretically and experimentally that injection of momentum in a region surrounding an object microscale flow can yield both "cloaking" conditions, where the field outside cloaking is unaffected by object, "shielding" hydrodynamic forces on are eliminated. Using field-effect electro-osmosis as mechanism for momentum, we present theoretical framework analytical solutions range geometrical shapes, validate these numerically experimentally, ability to dynamically switch between...
ABSTRACT Feeding the growing human population sustainably amidst climate change is one of most important challenges in 21st century. Current practices often lead to overuse agronomic inputs, such as synthetic fertilizers and water, resulting environmental contamination diminishing returns on crop productivity. The complexity agricultural systems, involving plant‐environment interactions management, presents significant scientific technical for developing sustainable practices. Addressing...
Local wounding in plants triggers signals that travel locally within the wounded leaf or systemically through vasculature to distant leaves. Our understanding of mechanisms initiation and propagation this ubiquitous class remains incomplete. Here, we develop a unifying framework based on poroelastic dynamics study two coupled biophysical processes—propagation pressure changes transmission chemical elicitors via mass flows driven by these changes—as potential for wound-induced signals. We...
The ability to move fluids at the microscale is core of many scientific and technological advancements. Despite its importance, flow control remains highly limited by use discrete channels mechanical valves, relies on fixed geometries. Here we present an alternative mechanism that leverages localized field-effect electroosmosis create dynamic patterns, allowing fluid manipulation without physical walls. We a set gate electrodes embedded in floor fluidic chamber using ac voltage sync with...
Biological ion pumps, such as bacteriorhodopsin (bR), utilize photons to move ions against concentration gradients, offering energy harvesting and spatiotemporal control of chemical gradients. This capability goes far beyond the capabilities today's synthetic devices, suggesting a hybrid approach embed bRs in devices order direct proton flow towards useful system applications. In this study, silicon-based nanochannel network with integrated purple membranes (PM) containing bR was fabricated....
Abstract The ability to control high-voltage actuator arrays relies, date, on expensive microelectronic processes or individual wiring of each a single off-chip switch. Here we present an alternative approach that uses on-chip photoconductive switches together with light projection system individually address actuators. Each is connected one more are nominally OFF unless turned ON using direct illumination. We selected hydrogenated amorphous silicon (a-Si:H) as our material, and provide...
We present a new concept for on-chip separation that leverages bidirectional flow, to tune the dispersion regime of molecules and particles. The system can be configured so low diffusivity species experience ballistic transport are advected through chamber, whereas high diffusion dominated with zero average velocity retained in chamber. detail means achieving electroosmotic flow using an array alternating current (AC) field-effect electrodes, experimentally demonstrate particles antibodies...
The use of thin liquid films has expanded beyond lubrication and coatings, into applications in actuators adaptive optical elements. In contrast to their predecessors, whose dynamics can be typically captured by modelling infinite or periodic films, these are characterized a finite amount an impermeable domain. global mass conservation constraint, together with common boundary conditions (e.g. pinning), create quantitatively qualitatively different than those films. Mathematically, this...
Abstract We present a new concept for on‐chip separation that leverages bidirectional flow, to tune the dispersion regime of molecules and particles. The system can be configured so low diffusivity species experience ballistic transport are advected through chamber, whereas high diffusion dominated with zero average velocity retained in chamber. detail means achieving electroosmotic flow using an array alternating current (AC) field‐effect electrodes, experimentally demonstrate particles...
We present a method to control individual high-voltage actuators in an array using microfabricated photoconductive switches and light projection system, thus overcoming the challenges of on-chip at high voltages. Such switching capabilities go beyond - our proposed approach may open door simple other processes, such as MEMS, pressure sensors, RF devices.
We present a microfluidic device for selective separation and extraction of molecules based on their diffusivity. The relies electroosmotically driven bidirectional flows in which high-diffusivity species experience net-zero velocity lower diffusivity are advected to collection reservoir. can operate continuously is suitable processing low sample volumes. Using several model systems, we show that the efficiency system maintained at more than 90% over tens minutes with purity 99%. demonstrate...
The use of thin liquid films has expanded beyond lubrication and coatings, into applications in actuators adaptive optical elements. In contrast to their predecessors, whose dynamics can be typically captured by modelling infinite or periodic films, these are characterized a finite amount an impermeable domain. global mass conservation constraint, together with common boundary conditions (e.g., pinning) create quantitatively qualitatively different than those films. Mathematically, this...
The ability to control high-voltage actuator arrays relies, date, on expensive microelectronic processes or individual wiring of each a single off-chip switch. Here we present an alternative approach that uses on-chip photoconductive switches together with light projection system individually address actuators. Each is connected one more are nominally OFF unless turned ON using direct illumination. We selected hydrogenated amorphous silicon as our material, and provide complete...
We present a microfluidic device for selective separation and extraction of molecules based on their diffusivity. The relies electroosmotically-driven bidirectional flows in which high diffusivity species experience net-zero velocity, lower are advected to collection reservoir. can operate continuously is suitable processing low sample volumes. Using several model systems, we showed that the efficiency system maintained at more than 90% over tens minutes, with purity 99%. demonstrate...