A5101437438- Graphene research and applications
- Nanopore and Nanochannel Transport Studies
- Nanowire Synthesis and Applications
- 2D Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum and electron transport phenomena
- Advancements in Battery Materials
- Carbon Nanotubes in Composites
- SARS-CoV-2 detection and testing
- Biosensors and Analytical Detection
- Molecular Junctions and Nanostructures
- Semiconductor materials and devices
- Graphene and Nanomaterials Applications
- Anodic Oxide Films and Nanostructures
- Surface and Thin Film Phenomena
- Ferroelectric and Negative Capacitance Devices
- Advancements in Semiconductor Devices and Circuit Design
- RNA modifications and cancer
- RNA Interference and Gene Delivery
- Force Microscopy Techniques and Applications
- Bacteriophages and microbial interactions
- Semiconductor materials and interfaces
- Nanoparticle-Based Drug Delivery
- Plasmonic and Surface Plasmon Research
Tsinghua University
2018-2025
First Affiliated Hospital of GuangXi Medical University
2019
Guangxi Medical University
2019
State Key Laboratory of Applied Organic Chemistry
2018
Lanzhou University
2018
Illumina (United States)
2015
IBM (United States)
2013-2015
Alliance for Safe Kids
2014
Materials Science & Engineering
2010-2012
University of California, Los Angeles
2008-2011
We report a rational approach to fabricate graphene nanoribbons (GNRs) with sub-10 nm width by employing chemically synthesized nanowires as the physical protection mask in oxygen plasma etch. Atomic force microscopy study shows that patterns of resulted replicate exactly those so ribbons or branched crossed nanostructures can be produced. Our linear scaling relation between GNR widths and nanowire diameters variable slopes for different etching times. GNRs controllable down 6 have been...
Graphene has attracted enormous attention for radio-frequency transistor applications because of its exceptional high carrier mobility, saturation velocity, and large critical current density. Herein we report a new approach the scalable fabrication high-performance graphene transistors with transferred gate stacks. Specifically, arrays stacks are first patterned on sacrificial substrate, then onto arbitrary substrates top. A self-aligned process, enabled by unique structure stacks, is used...
Deposition of high- κ dielectrics onto graphene is significant challenge due to the difficulties nucleating high quality oxide on pristine without introducing defects into monolayer carbon lattice. Previous efforts deposit often resulted in degradation carrier mobility. Here we report an entirely new strategy integrate with by first synthesizing freestanding nanoribbons at temperature and then transferring them room temperature. We show that single crystalline Al 2 O 3 can be synthesized...
Well-defined gold nanobelts as well unique nanocombs made of were readily synthesized by the reduction HAuCl4 with ascorbic acid in aqueous mixed solutions cationic surfactant cetyltrimethylammonium bromide (CTAB) and anionic sodium dodecylsulfonate (SDSn). Single-crystalline grown along <110> <211> directions prepared CTAB-SDSn at 4 27 degrees C, respectively. Furthermore, single-crystalline consisting a <110>-oriented stem nanobelt numerous <211>-oriented perpendicularly on one side...
The best of both worlds: Multifunctional Fe3O4@[email protected] shell nanoparticles (see scheme; Fe3O4 is black, polymer blue, gold brown) display good dispersibility and stability in aqueous solution. Strong magnetization NIR absorption are preserved the core–shell structures. These features should facilitate biomedical applications, combining benefits MRI diagnosis, magnetically targeted delivery, photothermal ablation. Supporting information for this article available on WWW under...
The integration ultrathin high dielectric constant (high-k) materials with graphene nanoribbons (GNRs) for top-gated transistors can push their performance limit nanoscale electronics. Here we report the assembly of Si/HfO2 core/shell nanowires on top individual GNRs as top-gates GNR field-effect high-k dielectrics. are synthesized by atomic layer deposition HfO2 shell highly doped silicon a precise control thickness down to 1−2 nm. Using top-gates, high-performance have been achieved...
We report the formation of PtSi nanowires, PtSi/Si/PtSi nanowire heterostructures, and nanodevices from such heterostructures. Scanning electron microscopy studies show that silicon nanowires can be converted into through controlled reactions between lithographically defined platinum pads nanowires. High-resolution transmission heteorstructure has an atomically sharp interface with epitaxial relationships Si[11̅0]//PtSi[010] Si(111)//PtSi(101). Electrical measurements pure have low...
Here we report high-performance sub-100 nm channel length graphene transistors fabricated using a self-aligned approach. The are highly doped GaN nanowire as the local gate with source and drain electrodes defined through process by size. This fabrication approach allows preservation of high carrier mobility in ensures nearly perfect alignment between source, drain, electrodes. It therefore affords transistor performance not previously possible. Graphene 45−100 lengths have been scaled...
A new strategy for integrating high-dielectric-constant (high-k) dielectrics with graphene nanoribbon (GNR) is presented. Freestanding zirconium oxide nanowires are synthesized and subsequently assembled on top of GNRs as high-k gate top-gated GNR transistors unprecedented performance.
A new technique for single molecular peptide sequencing is demonstrated by translocation of ssDNA-conjugated-peptide through MspA nanopore which regulated a DNA helicase motor.
Abstract As cancer is increasingly considered a metabolic disorder, it postulated that serum metabolite profiling can be viable approach for detecting the presence of cancer. By multiplexing mass spectrometry fingerprints from two independent nanostructured matrixes through machine learning highly sensitive detection and high throughput analysis, we report laser desorption/ionization (LDI) spectrometry-based liquid biopsy pan-cancer screening classification. The M ultiplexed N anomaterial- A...
The fact that single-layer graphene can be visualized on 300 nm SiO2/Si substrate using an optical microscope has enabled the facile fabrication of devices for fundamental studies and potential applications. Here we report Al2O3/Si with better contrast higher performance. Our show 72 is much than substrate. Moreover, transconductance transistors shows a more sevenfold increase, due to smaller dielectric thickness constant in Al2O3 film. These demonstrate new superior transistors, are...
Graphene transistors are of considerable interest for radio frequency (rf) applications. In general, with large transconductance and drain current saturation desirable rf performance, which is however nontrivial to achieve in graphene transistors. Here we report high-performance top-gated based on chemical vapor deposition (CVD) grown saturation. The were fabricated evaporated high dielectric constant material (HfO2) as the top-gate dielectrics. Length scaling studies channel length from 5.6...
Graphene transistors are of considerable interest for radio frequency (rf) applications. High-frequency graphene with the intrinsic cutoff up to 300 GHz have been demonstrated. However, reported date only exhibit a limited extrinsic about 10 GHz, and functional circuits demonstrated so far can merely operate in tens megahertz regime, from potential could offer. Here we report scalable approach fabricate self-aligned exceeding 50 that 1-10 regime. The devices fabricated on glass substrate...
Single-crystalline silver nanobelts larger than 10 μm in length, 60−100 nm width, and 30−40 thickness were synthesized facilely aqueous solutions under the direction of poly(acrylic acid) at 4 °C. With addition acetic acid to solution, unique hierarchical nanocolumns consisting stacked nanoplates fabricated.
Graphene has attracted considerable interest as a potential material for future electronics. Although mechanical peel is known to produce high quality graphene flakes, practical applications require continuous layers over large area. The catalyst-assisted chemical vapor deposition (CVD) promising synthetic method deliver wafer-sized graphene. Here we present systematic study on the nucleation and growth of crystallized domains in an atmospheric pressure (APCVD) process. Parametric studies...
We present the fabrication of sub-20 nm nanopores and nanopore arrays in membranes with embedded multilayer electrodes using CMOS semiconductor processes.
Abstract The rapid development of bioelectronics has lead to the emergence versatile biorelated architectures for information processing systems, sensors, actuators, and wearable devices. In recent years, 2D materials beyond graphene have been demonstrated be essential bioelectronic device components owing their merits atomic thickness, high transparency, large specific area, unique electrical/optical properties, good biocompatibility. Herein, advances in applications are reviewed...