Tailoring the optical and electronic properties of wide band gap β-Ga2O3 has been tremendous importance to utilize full potential material in current emerging technological applications electronics, optics, optoelectronics. In present work, we report effect Ti-dopant insolubility driven chemical inhomogeneity on structural, morphological, bonding, structure, red shift characteristics Ga2O3 polycrystalline compounds. Ga2–2xTixO3 (GTO; 0 ≤ x 0.20) compounds were synthesized using a...

We report the structural chemistry and optical properties of tin (Sn)-mixed gallium oxide (Ga2O3) compounds, where interfacial phase modulation-induced distortion in turn induces variations band gap nonlinear activity. The Sn incorporation into Ga2O3 causes significant reduction activity upon chemical composition tuning. Detailed investigation performed on chemistry, stabilization, surface morphology, electrochemical Sn-mixed compounds (Ga2–2xSnxO3, 0.00 ≤ x 0.3, Ga-Sn-O) indicates that...

Realization and optimization of the tunable/enhanced optical properties are critical to further advancing fields optoelectronics, photonics, nanoelectronics. In this context, here, we demonstrate green-emission characteristics with a ∼30-fold enhancement in selectively engineered nanocrystalline Ga2O3 control over size, phase, interface nanostructure. Pulsed-laser-deposited β-phase films an average crystallite size ∼9 nm along highly dense, close-compact nanocolumnar structure lowest...

Iron (Fe)-doped gallium oxide (Ga2O3) compounds (Ga2–xFexO3; x = 0.0–0.3; referred to GFO) were synthesized by the standard high-temperature solid-state chemical reaction method. X-ray diffraction analyses confirmed that sintered GFO stabilized in monoclinic crystal structure with C2/m space group. Local and bonding using XANES revealed Fe occupies octahedral tetrahedral sites similar Ga parent Ga2O3 lattice without considerable changes local symmetry. Morphology of is characterized presence...

The enhanced safety, superior energy, and power density of rechargeable metal-air batteries make them ideal energy storage systems for application in grids electric vehicles. However, the absence a cost-effective stable bifunctional catalyst that can replace expensive platinum (Pt)-based to promote oxygen reduction reaction (ORR) evolution (OER) at air cathode hinders their broader adaptation. Here, it is demonstrated Tin (Sn) doped β-gallium oxide (β-Ga2 O3 ) bulk form efficiently catalyze...

Tungsten (W) doped gallium oxide (Ga2O3) (Ga2-2xWxO3, 0.00≤x≤0.30, GWO) polycrystalline ceramic compounds were synthesized via conventional, high-temperature solid-state reaction method. The effect of W-doping on the crystal structure and electronic resulting GWO materials is studied in detail. single-phase, crystallized β-Ga2O3 for x≤0.15, at which point Ga2O3-WO3 composite formation occurs. average crystallite size increases with increasing W-content; however, predominant only single phase...

This work unfolds the fundamental mechanisms and demonstrates tunable optical properties derived via chemical composition tailoring in tungsten (W)-doped gallium oxide (Ga2O3) compounds. On basis of detailed investigation, solubility limits (W6+) ion associated effects on crystal structure, morphology, W-doped Ga2O3 (Ga2–2xWxO3, 0.00 ≤ x 0.25, GWO) compounds are reported. GWO materials were synthesized a conventional solid-state reaction route, where two-step calcination is adopted to...

Niobium (Nb) is a promising refractory metal with wide variety of technological applications in nanoelectronics, optoelectronics, photonics, and energy-related technologies. However, to further advance the field nanoelectronics nanophotonics, very high-quality Nb films excellent structural order are needed. While much progress has been made understanding heteroepitaxy on oxide substrates, underlying fundamental mechanisms, especially realize showing abrupt interfaces substrate without...

The authors report on the microstructure, crystallography, and mechanical properties of size controlled nanocrystalline (nc) molybdenum (Mo) films deposited by sputtering. nc‐Mo ≈100 nm thick with a variable microstructure are under argon (Ar) sputtering pressure ( P Ar ), which is varied in range 3–25 mTorr. X‐ray diffraction analyses indicate that exhibit (110) preferential growth. However, crystal‐quality degradation occurs for Mo at higher due to difference adatom mobility. average...

In this paper, we present a unique resistive switching (RS) mechanism study of Pt/TiO

Abstract This work reports on the correlation between structure, surface/interface morphology and mechanical properties of pulsed laser deposited (PLD) β -Ga 2 O 3 films transparent quartz substrates. By varying deposition temperature in range 25 °C–700 °C, ∼200 nm thick Ga with variable microstructure amorphous-to-nanocrystalline nature were produced onto substrates by PLD. The at room amorphous; nanocrystalline realized 700 °C. interface is characterized a typical nano-columnar while...

Abstract We report on the tunable and enhanced dielectric properties of tungsten (W) incorporated gallium oxide (Ga 2 O 3 ) polycrystalline electroceramics for energy power electronic device applications. The W‐incorporated Ga 2−2x W x , 0.00 ≤ 0.20; GWO) compounds were synthesized by high‐temperature solid‐state chemical reaction method varying W‐content. fundamental aspects in correlation with crystal structure, phase, microstructure GWO has been investigated detail. A detailed study...

Conductive atomic force microscopy has been widely employed to study the localized electrical properties of a wide range substrates in non-vacuum conditions by use noble metal-coated tips. However, quantitative characterization was often precluded unpredictable changes tip apex morphology, and/or electronic transport characteristics undesired oxide overcoats on tip. In this paper, impact mechanical and stimuli geometry gold coated tips conduction at tip-substrate contact is discussed...

Atomic force microscopy (AFM)-based study of electrical and electrochemical properties a material/system at an elevated temperature in atmospheric pressure has been limited to ~250°C conventional AFM setups. In this report, we have demonstrated the viability new approach for high studies (up 700°C) setup by employing combination micron-scale heater stage (MHS) custom-made all-metal tips. We present design, fabrication process characterization MHS A dependent impedance measurement on...

This work was performed in an effort to fundamentally understand how nanoscale contacts between materials evolve due coupled stresses, specifically those arising from mechanical and electrical stimuli. To investigate the stress response of contact these materials, atomic force microscopy (AFM) experiments with AFM tip-substrate interface subjected normal loading electric current, individually combination. Experiments study effect external stresses on metal/metal metal/graphite interfaces are...

Scanning Probe Microscopy (SPM) is arguably the only tool that available for direct nanoscale electrical and electrochemical characterization since measurement through a highly localized area necessitates electrode. However, conventional SPM systems are functional up to ~250°C under atmospheric pressure because significant heat convection from heating stage thermally-sensitive system modules disturbs stable operation 1,2 . In operando observations of non-vacuum processes necessitating much...

Scanning Probe Microscopy (SPM) is arguably the only tool that available for direct nanoscale electrical and electrochemical characterization since measurement through a highly localized area necessitates electrode. However, conventional SPM systems are functional up to ~250°C under atmospheric pressure because significant heat convection from heating stage thermally-sensitive system modules disturbs stable operation 1,2 . In operando observations of non-vacuum processes necessitating much...

Rolling resistance contributes to 6-10% of the overall fuel consumption. In an effort provide tunable rolling and damping rubbers, smart fluids are introduced composites fabricate composites. The subsequent will possess unique mechanical properties in response externally applied voltage. This paper discusses measurement poly(vinylidene fluoride) (PVDF) using a wooden pendulum roller, crafted our lab. All fibers can be submerged electro rheological (ERF) become impregnated with barium titanyl...

Abstract Core courses such as Dynamics and Thermodynamics are very difficult for many Undergraduate students. At the University of Texas El Paso it is no different. The Mechanical Engineering Department teaches a sophomore first term junior course. There unfortunately large failure rate both classes. intervention reported in this paper helps students take ownership their education. department wants to learn ask questions other class. also answer questions. method described evaluated uses...