A5013912210- Topological Materials and Phenomena
- Heusler alloys: electronic and magnetic properties
- Graphene research and applications
- 2D Materials and Applications
- Graphite, nuclear technology, radiation studies
- Nuclear and radioactivity studies
- Quantum and electron transport phenomena
- Liquid Crystal Research Advancements
- Conducting polymers and applications
- Recycling and Waste Management Techniques
- Diverse Musicological Studies
- Polymer crystallization and properties
- Synthesis and properties of polymers
- Magnetic properties of thin films
- Force Microscopy Techniques and Applications
- Theater, Performance, and Music History
- Polymer Nanocomposites and Properties
- Silicone and Siloxane Chemistry
- Surfactants and Colloidal Systems
- Polymer composites and self-healing
- Semiconductor Quantum Structures and Devices
- Musicology and Musical Analysis
- Nanofabrication and Lithography Techniques
- Advanced Thermoelectric Materials and Devices
- Analytical Chemistry and Sensors
University of California, Santa Barbara
2014-2022
RTX (United States)
2019-2022
University of Michigan
2019
The Ohio State University
2019
United States Naval Research Laboratory
2019
University of Rhode Island
2019
Naval Research Laboratory Radar Division
2019
Applied Radar (United States)
2019
University of Massachusetts Amherst
2019
Radar (United States)
2019
Highly stable, flexible films of polypyrrole with p-type conductivities 100 Ω–1 cm–1 have been prepared by electrolytic oxidation the appropriate pyrrole monomers; similarly mixtures and N-methylpyrrole between 5 × 10–3 depending upon composition.
The number of electrons in small metallic or semiconducting islands is quantised. When tunnelling enabled via opaque barriers this can change by an integer. In superconductors the addition units two electron charges (2e), reflecting that Cooper pair condensate must have even parity. This ground state (GS) foundational for all superconducting qubit devices. Here, we study a hybrid superconducting-semiconducting island and find three typical GS evolutions parallel magnetic field: robust...
This article presents improvements of large-signal RF power performance at <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Ka</i> -band gallium nitride high electron mobility transistors (HEMTs) utilizing a scandium aluminum barrier. Three samples were fabricated and measured having different passivation schemes, including nitride, silicon nitride. The pinning the Fermi level against valence band reduced gain output density passivated device,...
The linear and nonlinear optical properties have been determined for a new organic material 4-(N,N-dimethylamino)-3-acetamidonitrobenzene. Room-temperature angularly tuned type I phase matching doubling of 1.064 μm radiation was achieved with deff =27 pm/V. Favorable crystal growth habits were observed.
The discovery of topological insulators (TIs), materials with bulk band gaps and protected cross-gap surface states, in compounds such as Bi2Se3 has generated much interest identifying states (TSSs) other classes materials. In particular, recent theory calculations suggest that TSSs may be found half-Heusler ternary compounds. If experimentally realizable, this would provide a platform for entirely new heterostructure spintronic devices make use the structurally-identical but...
Recently, there have been significant advances in demonstrating the possible application of scanning probe techniques for high density data storage. While many obstacles yet to be overcome, one more promising applications such devices is very read-only disk drives. Such an requires means pattern and replicate nanometer scale features over macroscopic dimensions. We developed a technique both mastering replicating patterns use device at 100 times that current disks. The process consists using...
The magnitude of local stress applied to a polymer surface in the buffing process, which is critical method uniformly align liquid crystals for displays, has been evaluated from polarizing optical microscopic investigation nematic contact with polyimide surfaces were suitably buffed order visualize individual tracks rayon fibers. estimated most likely be far greater than yield film, thereby causing permanent molecular orientation along direction. poly(amic acid) and cured films, subjected...
We study the effect of external electric fields on superconductor-semiconductor coupling by measuring electron transport in InSb semiconductor nanowires coupled to an epitaxially grown Al superconductor. find that gate voltage induced can greatly modify strength, which has consequences for proximity superconducting gap, effective g-factor, and spin-orbit coupling, all play a key role understanding Majorana physics. further show level repulsion due finite size system lead seemingly stable...
The structure of the aromatic copolyester poly(ethylene terephthalate) and 80 mol % p-acetoxybenzoic acid was investigated by optical electron microscopy, wide angle X-ray, thermal analysis. results (LM) microscopy (TEM STEM) suggest existence ordered domains which appear as large lamellar thickness (∼200 Å) has been described earlier for single crystals pure hompolymer p-hydroxybenzoic (PHBA). However, characteristic reversible endotherm at 330–360°C PHBA could not be obtained. In isolated...
Abstract Highly oriented morphologies of poly(ethylene terephthalate) and 80 mole percent p‐acetoxybenzoic acid were prepared by shearing in an optical plate‐plate rheometer melt fiber drawing a temperature range at which the copolyester was either semicrystalline state or liquid crystalline phase. The optical, thermal, mechanical properties films drawn fibers depended significantly on processing temperature.
We study transport mediated by Andreev bound states formed in InSb nanowire quantum dots. Two kinds of superconducting source and drain contacts are used: epitaxial Al/InSb devices exhibit a doubling tunneling resonances, while, $\mathrm{NbTiN}/\mathrm{InSb}$ devices, spectra the dot appear to be replicated multiple times at increasing source-drain bias voltages. In both mirage crowded spectrum is created. To describe observations model developed that combines effects soft induced gap...
We measure the charge periodicity of Coulomb blockade conductance oscillations a hybrid InSb-Al island as function gate voltage and parallel magnetic field. The changes from $2e$ to $1e$ at gate-dependent value field, ${B}^{*}$, decreasing high low limit upon increasing voltage. In region between two limits, which our numerical simulations indicate be most promising for locating Majorana zero modes, we observe correlated peak spacings heights. For positive voltages,...
Abstract Oriented liquid crystalline polymers exhibit a macroscopic optical effect which appears as sequence of bright and dark bands perpendicular to the orientation direction. Although these appear be similar Williams domains in low molecular weight crystals, their interpretation must satisfy not only observations but also rheological properties mesophases high mechanical typically exhibited by oriented polymer morphologies produced processing such mesophases. In view criteria, we discuss...
We report electron transport studies on InSb-Al hybrid semiconductor-superconductor nanowire devices. Tunnelling spectroscopy is used to measure the evolution of subgap states while varying magnetic field and voltages applied various nearby gates. At fields between 0.7 0.9 T, differential conductance contains large zero bias peaks (ZBPs) whose height reaches values order 2e2/h. investigate these ZBPs for ranges gate in different discuss possible interpretations terms disorder-induced states,...
Abstract In the course of melt‐flow crystallization studies with ultrahigh‐molecular‐weight polyethylene (UHMWPE), we observed that melt UHMWPE is highly anisotropic above its equilibrium melting point and has a tendency to fibrillate. An examination anisotropy by optical, Thermal, x‐ray analysis indicates persists at 345°C, i.e., temperature which polymer degrades under nitrogen, appears similar smectic liquid‐crystalline phase.
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Sahil J. Patel, Jason K. Kawasaki, John Logan, Brian D. Schultz, Adell, B. Thiagarajan, A. Mikkelsen, Chris Palmstrøm; Surface electronic structure of epitaxial PtLuSb (001) thin films. Appl. Phys. Lett. 19 May 2014; 104 (20): 201603. https://doi.org/10.1063/1.4879475 Download citation file: Ris (Zotero)...