A5080016796- Semiconductor Quantum Structures and Devices
- Advanced biosensing and bioanalysis techniques
- Molecular Junctions and Nanostructures
- Cancer therapeutics and mechanisms
- Nanopore and Nanochannel Transport Studies
- Magnetic properties of thin films
- Neutropenia and Cancer Infections
- Surface and Thin Film Phenomena
- Semiconductor materials and devices
- Advanced Biosensing Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Monoclonal and Polyclonal Antibodies Research
- Microfluidic and Capillary Electrophoresis Applications
- nanoparticles nucleation surface interactions
- Plasmonic and Surface Plasmon Research
- Microfluidic and Bio-sensing Technologies
- Quantum Dots Synthesis And Properties
- GaN-based semiconductor devices and materials
- Photonic and Optical Devices
- Semiconductor materials and interfaces
- Advanced Chemical Physics Studies
- DNA and Nucleic Acid Chemistry
- Bioactive Compounds and Antitumor Agents
- Copper Interconnects and Reliability
- Acute Lymphoblastic Leukemia research
Florida International University
2002-2019
West Virginia University
1987-1988
Argonne National Laboratory
1987
Brooklyn College
1987
Brookhaven National Laboratory
1987
Los Alamos National Laboratory
1987
City University of New York
1987
Two closely lying (in energy) states of fcc iron grown on copper (100) have been identified by magneto-optic and photoemission experiments. The as-grown state at 460 K exhibits in-plane surface ferromagnetism in measurements. Ferromagnetism parallel to the plane is not observed for room-temperature state; its absence supported a comparison our calculated measured work functions results. LEED shows expanded interplanar spacing surface. temperature behavior effect fresh deposition indicate...
Studies of DNA translocation through graphene nanopores have revealed their potential for sequencing. Here we report a study protein chemically modified nanopores. A transmission electron microscope (TEM) was used to cut with diameters between 5 and 20 nm in multilayer prepared by chemical vapor deposition (CVD). After oxygen plasma treatment, the dependence measured ionic current on salt concentration pH consistent small surface charge induced formation carboxyl groups. While gold...
Quartz nanopipettes with attoliter sensing volumes can be potentially used as a label-free method to quantitatively characterize protein–protein interactions, based on charge mechanism.
The surface chemistry of GaAs passivated with P2S5 solutions modified sulfur and other sulfides has been studied x-ray photoelectron spectroscopy, room-temperature photoluminescence, scanning Auger electron microscopy. degree passivity achieved was measured by determining the intensity photoluminescence before after passivation. An increase in luminescence up to 23 times observed a treatment containing (NH4)2S buffered due reduced nonradiative carrier recombination. Phosphorus oxides bound...
We have fabricated porous membranes using a parylene encapsulated vertically aligned forest of multi-walled carbon nanotubes (MWCNTs, about 7 nm inner diameter). The transport charged particles in electrolyte through these was studied by applying electric field and pressure. Under an the range 4.4 × 10(4) V m(-1), electrophoresis instead electroomosis is found to be main mechanism for ion transport. Small molecules 5 gold nanoparticles can driven field. However, small biomolecules, like DNA...
Surface plasmon resonance (SPR) has been widely used as a label-free biophysical technique to quantitatively study biochemical processes. For the SPR data fitting using single exponential function, procedure extract rate constants is straightforward. However, there no simple for with double functions. A highly non-linear is, therefore, fit biphasic numerical solutions of equations. This requires some prior knowledge underlying interaction mechanism, and extracted often have large...
The effects of electron bombardment in 10−6 Torr CO or CO2 upon the surface composition ZnS thin films was determined with Auger spectroscopy. stable 1×10−9 residual vacuum for and exposures without bombardment. With both present, C deposited S decreased, but no O accumulated on surface. This interpreted as an beam stimulated reaction which dissociated by reformed leaving For CO2, were increased while reduced. a involving dissociation reformation COx data suggest that did not occur when...
The authors report on a study of dipole flip-flop “local” transition in ferroelectric polyvinylidene fluoride [P(VDF)] chains, using total energy calculation based the density functional theory. calculated results indicate that simple flipping single electric moment is energetically allowed. Furthermore, such involves no change either bond length, angle, or orientation chain. calculations also show thin film ordered strong interactions existing P(VDF) could cause modulation thus forming...
Surface plasmon resonance (SPR) is a widely used, affinity based, label-free biophysical technique to investigate biomolecular interactions. The extraction of rate constants requires accurate identification the particular binding model. bivalent analyte model involves coupled non-linear differential equations. No clear procedure identify mechanism has been established. In this report, we propose unique signature for This can be used distinguish from other biphasic models. proposed method...