A5102765873- 2D Materials and Applications
- Graphene research and applications
- Transition Metal Oxide Nanomaterials
- Molecular Junctions and Nanostructures
- Magnetic properties of thin films
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Semiconductor materials and devices
- Nanocluster Synthesis and Applications
- Chalcogenide Semiconductor Thin Films
- Mechanical and Optical Resonators
- Gas Sensing Nanomaterials and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Diamond and Carbon-based Materials Research
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- MXene and MAX Phase Materials
- Physics of Superconductivity and Magnetism
- Sensor Technology and Measurement Systems
- Perovskite Materials and Applications
- Electronic and Structural Properties of Oxides
- Advanced Thermoelectric Materials and Devices
- Advanced MEMS and NEMS Technologies
University of Illinois Chicago
2011-2023
Argonne National Laboratory
2016
Northwestern University
2016
Oak Ridge National Laboratory
2016
We observe current induced spin transfer torque resonance in permalloy (Py) grown on monolayer MoS2. By passing rf through the Py/MoS2 bilayer, field-like and damping-like torques are which excite ferromagnetic of Py. The signals detected via a homodyne voltage from anisotropic magnetoresistance In comparison to other bilayer systems with strong spin-orbit torques, MoS2 cannot provide bulk Hall effects thus indicates purely interfacial nature torques. Therefore our results indicate potential...
Two additional structural forms, free-standing nanomembranes and microtubes, are reported added to the vanadium dioxide (VO2) material family. Free-standing VO2 were fabricated by precisely thinning as-grown thin films etching away sacrificial layer underneath. microtubes with a range of controllable diameters rolled-up from nanomembranes. When nanomembrane is into microtubular structure, significant compressive strain generated accommodated therein, which decreases phase transition...
Abstract This work reports morphologically alike, high-quality monolayer MoS 2 flakes with a similar strain at various growth temperatures (750–900°C) achieved by adjusting sulfur temperature. The dynamics of are correlated changes in the photoluminescence (PL) and Raman peak positions. Monolayer crystals synthesized different from 750°C to 900°C using chemical vapor deposition (CVD). We examined structural quality aimed extract recombination mechanisms low-temperature, variable,...
Silver dimetal chalcogenides (Ag–V–VI2) are ternary semiconductors that have potential alternative energy applications due to their optimal band gaps and large extinction coefficients. The synthesis of these materials is challenging the lack effective pnictide precursors. We report use tris[N,N-bis(trimethylsilyl)amido]antimony (Sb[N(SiMe3)2]3) tris[N,N-bis(trimethylsilyl)amido]bismuth (Bi[(N(SiMe3)2]3) synthesize nanocrystalline AgSbSe2 AgBiSe2 quantum dots. reagents results in creation...
Vertical tunneling junctions showing negative differential resistance (NDR) are realized in WS2 homojunction devices. Mono-/multilayered single crystalline is grown using chemical vapor deposition. NDR observed through resonant Au/bi-layer WS2/Au and Pt/few-layered by back-gating at room temperature. While two-dimensional materials have been a central focus of research during the past decade, exploiting novel properties diverse layers these emerging with new designs for electronic Our...
We report a detailed analysis on the effects of processing parameters for sputtered tungsten trioxide (WO3) thin nanoscale films their structural, vibrational and electrical properties. The research aims to understand fundamental aspects WO3 sputtering at relatively low temperatures in an oxygen deprived environment targeting applications temperature sensitive substrates. Structural indicates that deposited room temperature, or substrate below 400 °C with partial pressure are amorphous....
Bulk spin Hall effects are well know to provide orbit torques, which can be used drive magnetization dynamics [1]. But one of the reoccurring questions is what extend torques may also originate at interface between materials with strong coupling and ferromagnets. Using torque driven ferromagnetic resonance we show for two systems, where interfacial dominate, that they large enough practically useful. First, transfer based on Rashba-Edelstein Bi/Ag [2]. Second, will combining permalloy...
We report successful fabrication of high performance ion-gated field-effect transistors (FETs) on hydrogenated diamond surface. Investigations the hydrogen (H)-terminated by Hall effect measurements shows mobility as ∼200 cm2 V-1 s-1. In addition we demonstrate a rapid scheme for achieving stable devices useful determining optimal growth and conditions. achieved H-termination using plasma treatment with sheet resistivity low ∼1.3 kΩ/sq. Conductivity through FET channel is studied function...