A5102970435- GaN-based semiconductor devices and materials
- ZnO doping and properties
- Ga2O3 and related materials
- Nanopore and Nanochannel Transport Studies
- Semiconductor Quantum Structures and Devices
- Acoustic Wave Resonator Technologies
- Fuel Cells and Related Materials
- Nanowire Synthesis and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- 2D Materials and Applications
- Quantum and electron transport phenomena
- Cancer Cells and Metastasis
- Aluminum Alloy Microstructure Properties
- Magnetic properties of thin films
- Laser-induced spectroscopy and plasma
- Light effects on plants
- Microstructure and mechanical properties
- Ferroelectric and Piezoelectric Materials
- Carbon Nanotubes in Composites
- Medical and Biological Ozone Research
- Membrane-based Ion Separation Techniques
- Olfactory and Sensory Function Studies
- Plasma Applications and Diagnostics
Tsinghua–Berkeley Shenzhen Institute
2024
Tsinghua University
2024
Southwest Jiaotong University
2023
IBM (United States)
2013-2018
IBM Research - Thomas J. Watson Research Center
2013-2018
Nanoacademic Technologies
2011-2016
Northeastern University
2015
Nanjing Tech University
2004
The behavior of water in carbon nanotubes has recently received increasing attention since some theoretical work shown that have the potential to be used as proton-conducting pores for a variety biological applications. properties nanotube strongly depend on its diameter and helicity; therefore, their influences molecules confined fully examined better understanding nanotube's In this work, molecular dynamics simulations were performed under ambient conditions armchair zigzag type segments...
Silicon nanowire field effect transistor (FET) sensors have demonstrated their ability for rapid and label-free detection of proteins, nucleotide sequences, viruses at ultralow concentrations with the potential to be a transformative diagnostic technology. Their nanoscale size gives them but also makes fabrication challenging large sensor-to-sensor variations, thus limiting commercial applications. In this work, combined approach nanofabrication, device simulation, materials, electrical...
Nanopore technology has been extensively investigated for analysis of biomolecules, and a success story in this field concerns DNA sequencing using nanopore chip featuring an array hundreds biological nanopores (BioNs). Solid-state (SSNs) have explored to attain longer lifetime higher integration density than what BioNs can offer, but SSNs are generally considered generate noise whose origin remains be confirmed. Here, we systematically study low-frequency (including thermal flicker)...
A method of forming cubic phase (zinc blende) GaN (referred as c‐GaN) on a CMOS‐compatible on‐axis Si (100) substrate is reported. Conventional materials are hexagonal (wurtzite) h‐GaN) and possess very high polarization fields (∼MV/cm) along the common growth direction <0001>. Such large lead to undesired shifts (e.g., wavelength current) in performance photonic vertical transport electronic devices. The polarization‐free <001>, however, this thermodynamically unstable,...
Silicon nanowire field effect transistor sensors with SiO2/HfO2 as the gate dielectric sensing surface are fabricated using a top down approach. These optimized for pH two key characteristics. First, sensitivity is shown to be independent of buffer concentration. Second, observed enhanced and equal Nernst maximum limit 59 mV/pH corresponding subthreshold drain current change ∼ 650%/pH. characteristics attributed use HfO2 an fabrication process compatible silicon processing technology.
Abstract The circadian clock coordinates the daily rhythmicity of biological processes, and its dysregulation is associated with various human diseases. Despite direct targeting rhythmic genes by many prevalent World Health Organization (WHO) essential drugs, traditional approaches can't satisfy need explore multi‐timepoint drug administration strategies across a wide range drugs. Here, droplet‐engineered primary liver organoids (DPLOs) are generated characteristics in 4 days, developed...
Sophisticated microelectromechanical systems for device and sensor applications have flourished in the past decade. These devices exploit piezoelectric, capacitive, piezoresistive effects, coupling between them. However, high-performance piezoresistivity (as defined by on/off ratio) has primarily been observed macroscopic single crystals. In this Letter, we show first time that rare-earth monochalcogenides thin film form can modulate a current more than 1000 times due to pressure-induced...
A fracture-based layer transfer technique referred to as controlled spalling was used separate a conventional InGaN/GaN multiple quantum well light-emitting diode (LED) structure from 50 mm sapphire wafer enabling the formation of vertical spalled LEDs (SLEDs). 25-µm-thick tensile Ni electrodeposited on surface wafer, followed by application polyimide tape layer. By mechanically guiding layer, 3-µm-thick LED epitaxy removed. Transmission electron microscopy imaging indicated that preserved...
Spatial-transcriptomics technologies have demonstrated exceptional performance in characterizing brain and visceral organ tissues, as well retinal organoids. However, it has not yet been proven whether spatial transcriptomics can effectively characterize primary tissue-derived organoids, the standardized tissue sectioning or slicing methods are applicable for such Herein, we present a technique, lamination-based organoid spatially resolved (LOSRT), organoid-spatially based on lamination....
We report first principles investigations of the anomalous Hall effect (AHE) in Fe and Ni four-probe crossbar nanostructures where boundary scattering is a very important mechanism for predicted AHE resistance. The results allow us to understand nanoscopic physics terms how quantized channels are scattered by boundaries contribute resistance, spin orbit interaction (SOI) versus scattering, texture channels, symmetry matrices. From individual transport we find that electrons pushed transverse...
Indium Gallium Nitride (InGaN) based PV have the best fit to solar spectrum of any alloy system and emerging LED lighting on InGaN technology has potential reduce energy consumption by nearly one half while enabling significant carbon emission reduction. However, getting maximum benefit from GaN diode -based LEDs will require wide-scale adoption. A key bottleneck for this is device cost, which currently dominated substrate (i.e. sapphire) epitaxy GaN). This work investigates two schemes...
Abstract Chitosan has good biocompatibility, in vivo biodegradability and certain physiological activity, which can be used as a drug carrier to stabilise protect components, causing the promotion of absorption controlling release. Using graphene oxide (GO) cross‐linking agent, functional groups its lamellar structure interact effectively with chitosan molecules, leading enhanced mechanical properties optimize controlled drug‐release behaviour. GO/chitosan composite films were prepared by...
Recently, preliminary experimental results of solar-to-hydrogen generation by wafer level InGaN nanowires were reported [Z. Mi et al. Nano Lett., 2011, 11 (6), pp 2353-2357]. In the present paper we report a theoretical investigation on dissociation process water molecules wurtzite GaN (100) surface (M-Plane) using density functional theory (DFT). We calculated structure and energetic adsorption, reaction barrier energies pathway for dissociation. The suggest that absorption H2O is more...
A new combination of long millisecond (1–2.5 ms) flash anneal at high peak temperature(1200–1300°C) and a absorber with low deposition temperature (<400 C) have been developed to generate highly activated (Rs~ 500 ohm/sq), sub-20 nm abrupt (≤ 3 nm/decade) N+ P+ junction. This approach also provides sub-2nm junction dopant motion control multiple ms-flash which are required for precision device centering doping 22 beyond devices. High performance SOI CMOS had achieved single matched well...
Gallium Nitride (GaN) is a unique material system that has been heavily exploited for photonic devices thanks to ultraviolet-to-terahertz spectral tunability. However, without cost effective approach, GaN technology limited laboratory demonstrations and niche applications. In this investigation, integration of on Silicon (100) substrates attempted enable widespread application based optoelectronics. Controlled local epitaxy wurtzite phase on-axis Si(100) demonstrated via metal organic...
Outside Front Cover: Cold atmospheric plasmas (CAPs) have great potential in tissue engineering and regeneration medicine. In our work, the ultimate tensile strength Young's modulus of decellularized porcine aortic valve leaflets (DPAVL) were considerably improved after surface micro-discharge (SMD) treatment NOx mode while under O3 had no effect. The reaction between activated species DPAVL pH change other than temperature/UV irradiation play major role. Further details can be found article...