A5046956822- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Plasma Diagnostics and Applications
- Semiconductor materials and devices
- Advanced Surface Polishing Techniques
- Advanced materials and composites
- Vacuum and Plasma Arcs
- Dust and Plasma Wave Phenomena
- Supercapacitor Materials and Fabrication
- Analytical Chemistry and Sensors
- Electrohydrodynamics and Fluid Dynamics
- Force Microscopy Techniques and Applications
- Advanced Battery Materials and Technologies
- Advanced Sensor Technologies Research
- High-pressure geophysics and materials
- Advancements in Battery Materials
- MXene and MAX Phase Materials
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Electron and X-Ray Spectroscopy Techniques
- Laser-induced spectroscopy and plasma
- Per- and polyfluoroalkyl substances research
- Plasma Applications and Diagnostics
- Advanced biosensing and bioanalysis techniques
- Advanced Battery Technologies Research
Michigan State University
2013-2024
Fraunhofer USA
2015-2024
Tsinghua University
2024
Bradley University
1999
Abstract With the advantages of superior energy density, lithium‐sulfur batteries (LSBs) have been considered as one promising next‐generation batteries. However, some key issues, such shuttle effect intermediate lithium polysulfides, poor conductivity sulfur, Li 2 S and , huge volume variation during charge/discharge process, hindered its development. In this respect, a variety nanomaterials used to overcome above‐mentioned defects. Among them, two‐dimensional (2D) present unique merits for...
Dendrite growth during the continuous charge/discharge process is a serious problem that leads to internal short circuits in aqueous zinc-ion batteries. Herein, multifunctional zinc silicate polymer lithium polysilicate (LSO) was proposed address issues. LSO can prevent direct contact between electrolytes and anodes, thereby suppressing severe dendrite growth. Its mechanically stable structure restrain stress release further stabilize electrode. In addition, chemically bonded anodes ensure...
Abstract Diamond‐like carbon (DLC) films are favored for wear components because of diamond‐like hardness, low friction, wear, and high corrosion resistance (Schultz et al., Mat‐wiss u Werkstofftech 2004;35:924–928; Lappalainen J Biomed Mater Res B Appl Biomater 2003;66B:410–413; Tiainen, Diam Relat 2001;10:153–160). Several studies have demonstrated their inertness, nontoxicity, the biocompatibility, which has led to interest among manufacturers surgical implants (Allen 2001;58:319–328;...
In low-pressure capacitively coupled discharges, a heating mode transition from pressure-heating dominated state to an Ohmic-heating is known by applying small transverse magnetic field. Here we demonstrate via particle-in-cell simulations and moment analysis of the Boltzmann equation that enhancement Ohmic induced Hall current in direction. As field increases, direction dominates total electron power absorption. The can be well approximated unmagnetized discharges.
Abstract We demonstrate a self-consistent and complete description of electron dynamics in typical electropositive radio frequency magnetron sputtering (RFMS) argon discharge with dielectric target. The dynamics, including the power absorption one (RF) period, is studied via fully kinetic 2d3v particle-in-cell/Monte Carlo collision (PIC/MCC) electrostatic simulation. interplay between fundamental plasma parameters analyzed through their spatiotemporal dynamics. Due to influence magnetic trap...
We studied aerosol jet printing on flexible substrates for wearable and electronic devices. First, we investigated the electrical conductivity of printed silver layers at different temperatures. An up to 60% bulk Ag was measured after sintering 140 °C a hot plate. Higher conductivities became possible with higher sinter The ink showed surprisingly high flexibility. Transmission lines were [Kapton Rogers liquid crystal polymer (LCP) foils], performance 110 GHz. coplanar waveguide transmission...
A multiple substrate, microwave plasma-assisted chemical vapor deposition synthesis process for single crystal diamond (SCD) is demonstrated using a 915MHz reactor. Diamond was performed input chemistries of 6–8% CH4∕H2, powers 10–11.5kW, substrate temperatures 1100–1200°C, and pressures 110–135Torr. The simultaneous SCD over 70 seeds yielded good quality with rates 14–21μm∕h. Multiple runs totaling 145h time added 1.8–2.5mm material to each the seed crystals.
One-dimensional particle-in-cell simulations with Monte Carlo collisions are used to investigate the influence of metastable atoms in low pressure radio-frequency argon discharges magnetic fields ranging from 0 G 60 G. Two levels species included and tracked as particles, enabling multistep ionization pooling. At fields, have little on discharge. higher electron density increases temperature decreases at center discharge inclusion atoms. The reduction is attributed depletion energetic...
Boron-doped diamond (BDD) is a promising electrochemical tool that exhibits excellent chemical sensitivity and stability. These intrinsic advantages coupled with the material's vast microfabrication flexibility make BDD an attractive sensing device. In this study, two different 3-in-1 electrode sensors were fabricated, characterized, investigated for their capability to detect isatin, anxiogenic indole possesses anticonvulsant activity. Each device was comprised of working, reference,...
Scale-invariant breathing oscillations are observed in similar magnetized discharges at different spatiotemporal scales via fully kinetic particle-in-cell simulations. With an increase the similarity invariant B/p, i.e., ratio of magnetic field to pressure, triggered, leading appreciable time-averaged potential fall outside sheath. onset and development oscillations, electron energization mechanism shifts from sheath direct Ohmic heating ionization region due change inside cathode Based on...
Abstract Perfluoroalkyl substances (PFAS) have unique properties that limit their degradability in the environment. One of these PFAS is an acid (PFOA). Electrochemical oxidation a promising method for remediation, but energy costs are high. To consumption, this study used boron‐doped diamond (BDD) electrode stack and combined current density technique employed 50 mA/cm 2 first 0.25 hours then lowered to 1, 5, or 10 . This similar one developed previously; however, was only compounds...
Abstract A single-beam ion source was developed and used in combination with magnetron sputtering to modulate the film microstructure. The emits a single beam of ions that interact deposited simultaneously enhances discharge. voltage can be adjusted over wide range, from approximately 240 130 V, as varies 0 150 while current increases accordingly. low-voltage high-current discharge enables ‘soft mode’, which is beneficial for thin-film growth. Indium tin oxide (ITO) thin films were at room...