A5077305843- 2D Materials and Applications
- Graphene research and applications
- Carbon Nanotubes in Composites
- Perovskite Materials and Applications
- Ferroelectric and Piezoelectric Materials
- Cerebrospinal fluid and hydrocephalus
- Fuel Cells and Related Materials
- Nanowire Synthesis and Applications
- Acoustic Wave Resonator Technologies
- Electrocatalysts for Energy Conversion
- Advanced MEMS and NEMS Technologies
- Advanced Sensor and Energy Harvesting Materials
- Molecular Junctions and Nanostructures
- Head and Neck Surgical Oncology
- Ferroelectric and Negative Capacitance Devices
- Acupuncture Treatment Research Studies
- Spinal Dysraphism and Malformations
- Electronic and Structural Properties of Oxides
- Semiconductor materials and interfaces
- Multiferroics and related materials
- Surface Modification and Superhydrophobicity
- Intramuscular injections and effects
- Fetal and Pediatric Neurological Disorders
- Advanced Memory and Neural Computing
- Chalcogenide Semiconductor Thin Films
Sun Yat-sen University
2025
Cangzhou Central Hospital
2025
University of Nebraska–Lincoln
2013-2024
Chengdu University of Traditional Chinese Medicine
2021-2024
Shengli Oilfield Central Hospital
2023
Ministry of Agriculture and Rural Affairs
2022
Beijing Municipal Ecological and Environmental Monitoring Center
2008-2022
Beijing Shijitan Hospital
2009-2021
Capital Medical University
2012-2021
Peking University
2002-2020
van der Waals layered structures, notably the transitional metal dichalcogenides (TMDs) and TMD-based heterostructures, have recently attracted immense interest due to their unique physical properties potential applications in electronics, optoelectronics, energy harvesting. Despite recent progress, it is still a challenge perform comprehensive characterizations of critical these including crystal chemical dynamics, interlayer coupling, using single characterization platform. In this study,...
We exploit scanning probe controlled domain patterning in a ferroelectric top layer to induce nonvolatile modulation of the conduction characteristic monolayer MoS$_2$ between transistor and junction state. In presence wall, exhibits rectified I-V that is well described by thermionic emission model. The induced Schottky barrier height varies from 0.38 eV 0.57 tunabe SiO$_2$ global back-gate, while tuning range depends sensitively on band tail trapping states. Our work points new route...
Single-crystal transition metal dichalcogenides (TMDs) and TMD-based heterojunctions have recently attracted significant research industrial interest owing to their intriguing optical electrical properties. However, the lack of a simple, low-cost, environmentally friendly, synthetic method poor understanding growth mechanism post huge challenge implementing TMDs in practical applications. In this work, we developed novel approach for direct formation high-quality, monolayer few-layer MoS2...
This study was designed to assess the effects of surgery method on overall survival (OS) and cancer-specific (CSS) in patients with hepatocellular carcinoma (HCC). is a retrospective study. Patients diagnosed primary HCC (N = 10,174) were identified from Surveillance, Epidemiology, End Results Database 2010 2017 categorized into surgical 4950) nonsurgical 5224) groups. The characteristics balanced by propensity score matching. Multivariate Cox analysis used explore independent prognostic...
Heteroepitaxial coupling at complex oxide interfaces presents a powerful tool for engineering the charge degree of freedom in strongly correlated materials, which can be utilized to achieve tailored functionalities that are inaccessible bulk form. Here, charge-transfer effect between two oxides, Sm0.5 Nd0.5 NiO3 (SNNO) and La0.67 Sr0.33 MnO3 (LSMO), is exploited realize giant enhancement ferroelectric field prototype Mott field-effect transistor. By switching polarization Pb(Zr,Ti)O3 (PZT)...
We have demonstrated the fabrication of horizontally aligned carbon nanotube (CNT) bundles on Si substrate for interconnect line application. By controlling catalyst thickness, we fabricated multi-walled CNT and few-walled with different diameters. measured resistances CNTs as a function length diameter. The dependence contact resistance between metal diameter was extracted from plots. investigated experimentally validated relationship mean free path CNT.
To date, scale‐up fabrication of transition metal dichalcogenide (TMD‐) based 2D/2D or 2D/3D heterostructures with specific functionalities is still a great challenge. This study, for the first time, reports on controllable synthesis large‐area and continuous semiconductor/metal consisting monolayer MoS 2 bulk MoO unique electrical optical properties via one‐step, vapor‐transport‐assisted rapid thermal processing. The temperature‐dependent transport measurements reveal that –MoO...
We report a more than 10-fold enhancement of the piezoelectric coefficient d33 polycrystalline CH3NH3PbI3 (MAPbI3) films when interfacing them with ferroelectric PbZr0.2Ti0.8O3 (PZT). Piezoresponse force microscopy (PFM) studies reveal [Formula: see text] values 0.3-0.4 pm/V for MAPbI3 deposited on Au, indium tin oxide, and SrTiO3 surfaces, small phase angle fluctuating at length scales smaller grain size. In sharp contrast, samples prepared epitaxial PZT films, we observe large-scale polar...
It is known that defects strongly influence the properties of two-dimensional (2D) materials. The controlled creation and removal can be utilized to tailor optical electronic responses these 2D materials for optoelectronic nanoelectronic applications. In this study, we developed an efficient approach reversibly control defect states in mechanically exfoliated graphene molybdenum disulfide (MoS2) monolayers. were created by aluminium oxide (Al2O3) plasmas removed moderate thermal annealing at...
Interfacing CH3NH3PbI3 (MAPbI3) with 2D van der Waals materials in lateral photodetectors can suppress the dark current and driving voltage, while interlayer charge separation also renders slower dynamics. In this work, we show that more than one order of magnitude faster photoresponse time be achieved MAPbI3/MoS2 by locally separating photocharge generation recombination through a parallel channel single-layer MAPbI3. Photocurrent (Iph) mapping reveals electron diffusion lengths about 20 μm...
Superhydrophobic nano-flower surfaces were fabricated using MEMS technology and microwave plasma-enhanced chemical vapor deposition (MPCVD) of carbon nanotubes on silicon micro-post array surfaces. The structures can be readily formed within 1–2 min the arrays with spacing ranging from 25 to 30 µm. petals nano-flowers consisted clusters multi-wall nanotubes. Patterned characterized various microscopy techniques. After MPCVD, apparent contact angle (160 ± 0.2°), abbreviated as ACA (defined...
We report piezo-response force microscopy studies of the static and dynamic properties domain walls (DWs) in 11 to 36 nm thick films crystalline ferroelectric poly(vinylidene-fluoride-trifluorethylene). The DW roughness exponent ζ ranges from 0.39 0.48 creep μ varies 0.20 0.28, revealing an unexpected effective dimensionality ∼1.5 that is independent film thickness. Our results suggest predominantly 2D ferroelectricity layered polymer we attribute fractal deroughening due correlations...
The low in-plane symmetry in layered 1T'-ReS$_2$ results strong band anisotropy, while its manifestation the electronic properties is challenging to resolve due lack of effective approaches for controlling local current path. In this work, we reveal giant transport anisotropy monolayer four-layer ReS$_2$ by creating directional conducting paths via nanoscale ferroelectric control. By reversing polarization a polymer top layer, induce conductivity switching ratio >1.5x10$^8$ channel at 300 K....
The interfacial charge transfer between mechanically exfoliated few-layer graphene and Cr2O3 (0001) surfaces has been investigated. Electrostatic force microscopy Kelvin probe studies point to hole doping of graphene, with up a 150 meV shift in the Fermi level, an aspect that is confirmed by Raman spectroscopy. Density functional theory calculations furthermore confirm p-type nature graphene/chromia interface suggest chromia able induce significant carrier spin polarization layer. A large...