A5086285281- Advanced Materials and Mechanics
- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Hydrogels: synthesis, properties, applications
- Adhesion, Friction, and Surface Interactions
- Cellular Mechanics and Interactions
- Elasticity and Material Modeling
- Silk-based biomaterials and applications
- Ferroelectric and Piezoelectric Materials
- Polymer Surface Interaction Studies
- Vibration Control and Rheological Fluids
- Surface Modification and Superhydrophobicity
- Cellular and Composite Structures
- Inhalation and Respiratory Drug Delivery
- Structural Analysis and Optimization
- Biochemical and Structural Characterization
- Polymer composites and self-healing
- Advanced Drug Delivery Systems
- Digital Holography and Microscopy
- Cardiomyopathy and Myosin Studies
- COVID-19 Clinical Research Studies
- Architecture and Computational Design
- Tendon Structure and Treatment
- Advanced Fluorescence Microscopy Techniques
- Nanoparticle-Based Drug Delivery
Technion – Israel Institute of Technology
2019-2024
Sami Shamoon College of Engineering
2023
Assuta Medical Center
2022
University of California, Santa Barbara
2017-2021
Azrieli College of Engineering Jerusalem
2021
Ben-Gurion University of the Negev
2014-2019
California Institute of Technology
2016-2018
Stanford University
2013-2017
TU Dortmund University
2016
Shenkar College of Engineering and Design
2015-2016
Light field microscopy is a new technique for high-speed volumetric imaging of weakly scattering or fluorescent specimens.It employs an array microlenses to trade off spatial resolution against angular resolution, thereby allowing 4-D light be captured using single photographic exposure without the need scanning.The recorded can then used computationally reconstruct full volume.In this paper, we present optical model based on wave optics, instead previously reported ray optics models.We also...
Specialized image signal processors (ISPs) exploit the structure of processing pipelines to minimize memory bandwidth using architectural pattern line-buffering , where all intermediate data between each stage is stored in small on-chip buffers. This provides high energy efficiency, allowing long with tera-op/sec. battery-powered devices, but traditionally requires painstaking manual design hardware. Based on this pattern, we present Darkroom, a language and compiler for processing. The...
Light field microscopy has been proposed as a new high-speed volumetric computational imaging method that enables reconstruction of 3-D volumes from captured projections the 4-D light field. Recently, detailed physical optics model microscope derived, which led to development deconvolution algorithm reconstructs with high spatial resolution. However, resolution reconstructions shown be non-uniform across depth, some z planes showing and others, particularly at center imaged volume, very low...
Superhydrophobic coatings with contact angles (CAs) > 150° and sliding (SAs) < 10° have become the focus of research industrial development studies for water repellency applications. Furthermore, superhydrophobic shown to reduce ice adhesion by means their low surface energy chemistry nano/micro roughness. Superhydrophobicity can be achieved combining roughness surface, inspired lotus leaf composition structure. Durability enhancement surfaces is a critical issue commercial Consequently, use...
Mechanical displacement in commonly used piezoelectric materials is typically restricted to linear or biaxial nature and a few percent of the material dimensions. Here, we show that free-standing BaTiO3 membranes exhibit nonconventional electromechanical coupling. Under an external electric field, these superelastic undergo controllable reversible "sushi-rolling-like" 180° folding–unfolding cycles. This crease-free folding mediated by charged ferroelectric domains, leading giant >3.8 4.6 μm...
Thanks to many promising properties, including biocompatibility and the ability experience large deformations, poly(ethylene glycol) diacrylate (PEGDA) hydrogels are excellent candidate materials for a wide range of applications. Interestingly, polymerization PEGDA leads network microstructure that is fundamentally different from "classic" polymeric gels. Specifically, comprise PEG chains interconnected by multifunctional densely grafted rod-like polyacrylates (PAs), which serve as...
Spider silk is a protein material that exhibits extraordinary and nontrivial properties such as the ability to soften decrease its length by up ∼60% upon exposure high humidity. This process commonly called supercontraction result of transition from highly oriented glassy phase disoriented rubbery phase. In this work, we derive microscopically motivated energy-based model captures underlying mechanisms give rise supercontraction. We propose increase in relative humidity consequent wetting...
Spider silk is a protein material that exhibits extraordinary and nontrivial properties such as the ability to soften, decrease in length (i.e., supercontract), twist upon exposure high humidity. These behaviors stem from unique microstructure combination with transition glassy rubbery result of humidity-driven diffusion water. In this Letter we propose four scales govern mechanical response during transition. addition, develop model describes microstructural evolution spider thread explains...
Abstract Stimuli‐responsive hydrogels that swell under constraints such as spatial geometric confinement are employed in many applications, including biomedical devices and actuators, to perform mechanical work. Due the heterogeneous deformations arise from these constraints, computation of swelling‐induced stress poses numerical difficulties. This work proposes a simple experimental method based on 3D‐printing technologies characterize this stress. The swelling is investigated two types...
Abstract Mechanical to electrical energy conversion is a well-established transduction approach. However, cases in which mechanical source not available call for new approaches harvest energy. In the present study, we demonstrate harvesting soft dielectric elastomer (DE) tubes. Broadly, obtained through inflation of tube, charging DE layer, and deflation, results decrease capacitance an increase voltage. We propose two methods mechanically charge (or inflate) system: (1) active, tube...
The submersion of a polymer network with high density hydrogen bond based cross-links in an aqueous bath results the formation rubberlike hydrogel. cross-links, which connect chains and maintain structure network, can dissociate as result two main factors: (1) interactions between bonds surrounding water molecules (2) forces that are exerted on cross-link from interconnected chains. We recall these depend ratio end-to-end distance overall contour length application external loading...
A systematic, statistical-mechanics-based analysis of the response dielectric elastomers to coupled electromechanical loading is conducted, starting from monomer level through polymer chain and ending with closed-form expressions for polarization stress fields. It found that apparent at macrolevel dictated by four microscopic parameters---the type polarizability length density. Our further reveals a new electrostrictive effect either reinforces or opposes polarization-induced deformation....
Tracking the coordinated activity of cellular events through volumes intact tissue is a major challenge in biology that has inspired significant technological innovation. Yet scanless measurement high-speed individual neurons across three dimensions scattering mammalian remains an open problem. Here we develop and validate computational imaging approach (SWIFT) integrates high-dimensional, structured statistics with light field microscopy to allow synchronous acquisition single-neuron...
Superhydrophobic (SH) coatings have been shown to reduce freezing and ice nucleation rates, by means of low surface energy chemistry tailored with nano/micro roughness. Durability enhancement SH surfaces is a crucial issue. Consequently, the present research on reducing adhesion based radiation-induced radical reaction for covalently bonding SiO2 nanoparticles polymer obtain durable Results indicated that proposed approach resulted in having high contact angles (>155°) sliding (<5°) improved...
The byssi of sessile mussels have the extraordinary ability to adhere various surfaces and withstand static dynamic loadings arising from hostile environmental conditions. Many investigations aimed at understanding unique properties byssal thread–plaque structures been conducted inspired enhancement fibre coatings adhesives. However, a systems-level analysis mechanical performance composite materials is lacking. In this work, we discuss anatomy byssus function each three components (the...