A5048357268- Graphene research and applications
- 2D Materials and Applications
- Topological Materials and Phenomena
- Quantum and electron transport phenomena
- Carbon Nanotubes in Composites
- Advanced Memory and Neural Computing
- Semiconductor materials and devices
- Advancements in Battery Materials
- MXene and MAX Phase Materials
- Advanced Thermoelectric Materials and Devices
- Peptidase Inhibition and Analysis
- Advanced Condensed Matter Physics
- Electronic and Structural Properties of Oxides
- Physics of Superconductivity and Magnetism
- Iron-based superconductors research
- Surface and Thin Film Phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Graphene and Nanomaterials Applications
- Cardiac Structural Anomalies and Repair
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Organic Electronics and Photovoltaics
- Photonic and Optical Devices
- Perovskite Materials and Applications
- Ferroelectric and Negative Capacitance Devices
Peking University
2016-2025
South China University of Technology
2014-2025
Collaborative Innovation Center of Quantum Matter
2016-2025
Beijing Academy of Quantum Information Sciences
2019-2024
Fujian Medical University
2015-2024
Union Hospital
2015-2024
First Affiliated Hospital of Xiamen University
2021-2024
Fujian Institute of Microbiology
2017-2024
Hefei University
2023-2024
Xi'an Jiaotong University
2024
We employ scanning probe microscopy to reveal atomic structures and nanoscale morphology of graphene-based electronic devices (i.e., a graphene sheet supported by an insulating silicon dioxide substrate) for the first time. Atomic resolution tunneling images presence strong spatially dependent perturbation, which breaks hexagonal lattice symmetry graphitic lattice. Structural corrugations partially conform underlying oxide substrate. These effects are obscured or modified on processed with...
Irradiation of graphene on ${\mathrm{SiO}}_{2}$ by 500 eV Ne and He ions creates defects that cause intervalley scattering as is evident from a significant Raman $D$ band intensity. The defect gives conductivity proportional to charge carrier density, with mobility decreasing the inverse ion dose. decrease 4 times larger than for similar concentration singly charged impurities. minimum decreases values lower $4{e}^{2}/\ensuremath{\pi}h$, theoretical value free scattering. Defected shows...
We reduce the dimensionless interaction strength alpha in graphene by adding a water overlayer ultrahigh vacuum, thereby increasing dielectric screening. The mobility limited long-range impurity scattering is increased over 30%, due to background constant enhancement leading reduced of electrons with charged impurities. However, carrier-density-independent conductivity short-range impurities decreased almost 40%, screening potential conduction electrons. minimum nearly unchanged, canceling...
Grain boundaries are observed and characterized in chemical vapor deposition-grown sheets of hexagonal boron nitride (h-BN) via ultra-high-resolution transmission electron microscopy at elevated temperature. Five- seven-fold defects readily along the grain boundary. Dynamics strained regions boundary resolved. The defect structures resulting out-of-plane warping consistent with recent theoretical model predictions for h-BN.
Abstract Photodetectors based on Weyl semimetal promise extreme performance in terms of highly sensitive, broadband and self‐powered operation owing to its extraordinary material properties. Layered Type‐II that break Lorentz invariance can be further integrated with other two‐dimensional materials form van der Waals heterostructures realize multiple functionalities inheriting the advantages materials. Herein, we report realization a photodetector T d ‐MoTe 2 . The prototype metal–MoTe...
Ischemic stroke can induce changes in mitochondrial morphology and function. As a regulatory gene mitochondria, optic atrophy 1 (OPA1) plays pivotal role the regulation of dynamics other related functions. However, its roles cerebral ischemia-related conditions are barely understood.
Flexible and transparent electronic devices with extremely high mobilities are fabricated from a graphene sheet, single atomic layer of graphite, by using the transfer printing method. "Printed" circuits achieve field effect up to 10000 cm2/Vs at room temperature. Our technique is scaleable more chemically-gentle process for fabricating quality graphene, nanoscale in general.
Positive quantum spin Hall gap in monolayer 1T′-WTe2 is consistently supported by density-functional theory calculations, ultrafast pump–probe, and electrical transport measurements. It argued that monolayer 1T′-WTe2, which was predicted to be a semimetallic material, likely truly 2D insulator with positive gap.
High-resolution noncontact atomic force microscopy of ${\mathrm{SiO}}_{2}$ reveals previously unresolved roughness at the few-nm length scale, and scanning tunneling graphene on shows to be slightly smoother than supporting substrate. A quantitative energetic analysis explains observed as extrinsic, a natural result highly conformal adhesion. Graphene conforms substrate down smallest features with nearly 99% fidelity, indicating adhesion can effective for strain engineering graphene.
Atomically precise tailoring of graphene can enable unusual transport pathways and new nanometer-scale functional devices. Here we describe a recipe for the controlled production highly regular "5-5-8" line defects in by means simultaneous electron irradiation Joule heating applied electric current. High-resolution transmission microscopy reveals individual steps growth process. Extending earlier theoretical work suggesting valley-discriminating capabilities 5-5-8 defect, perform...
The layered ternary compound TaIrTe4 is an important candidate to host the recently predicted type-II Weyl Fermions that break Lorentz invariance. Photodetectors based on semimetal promise extreme performance in terms of highly sensitive, broadband, and self-powered operation owing its topologically protected band structures. In this work, we report realization a broadband photodetector TaIrTe4. photocurrent generation mechanisms are investigated with power- temperature-dependent...
Emerging two-dimensional (2D) semiconducting materials serve as promising alternatives for next-generation digital electronics and optoelectronics. However, large-scale 2D semiconductor films synthesized so far are typically polycrystalline with defective grain boundaries that could degrade their performance. Here, the first time, wafer-size growth of a single-crystal Bi2O2Se film, which is novel air-stable high mobility, was achieved on insulating perovskite oxide substrates [SrTiO3,...
Abstract Anisotropy in crystals arises from different lattice periodicity along crystallographic directions, and is usually more pronounced two dimensional (2D) materials. Indeed, the emerging 2D materials, electrical anisotropy has been one of recent research focuses. However, key understandings in-plane anisotropic resistance low-symmetry as well demonstrations model devices taking advantage it, have proven difficult. Here, we show that, few-layered semiconducting GaTe, conductivity...
Abstract Photosensing and energy harvesting based on exotic properties of quantum materials new operation principles have great potential to break the fundamental performance limit conventional photodetectors solar cells. Weyl semimetals demonstrated novel optoelectronic that promise applications in photodetection arising from their gapless linear dispersion Berry field enhanced nonlinear optical effect at vicinity nodes. In this work, we demonstrate robust photocurrent generation edge T d...
Radiolabeled fibroblast activation protein (FAP) inhibitors (FAPIs) have shown promise as cancer diagnostic agents; however, the relatively short tumor retention of FAPIs may limit their application in radioligand therapy. In this paper, we report design, synthesis, and evaluation a FAPI tetramer. The aim study was to evaluate tumor-targeting characteristics radiolabeled multimers in vitro in vivo, thereby providing information for design FAP-targeted radiopharmaceuticals based on...
The realization of graphene gapped states with large on/off ratios over wide doping ranges remains challenging. Here, we investigate heterostructures based on Bernal-stacked bilayer (BLG) atop few-layered CrOCl, exhibiting an over-1-GΩ-resistance insulating state in a widely accessible gate voltage range. could be switched into metallic ratio up to 10
Anisotropy is a manifestation of lowered symmetry in material systems that have profound fundamental and technological implications. For van der Waals magnets, the two-dimensional (2D) nature greatly enhances effect in-plane anisotropy. However, electrical manipulation such anisotropy as well demonstration possible applications remains elusive. In particular, in-situ modulation spin transport, vital for spintronics applications, has yet to be achieved. Here, we realized giant electrically...
Extensive research has been conducted on radiolabeled fibroblast activation protein (FAP) inhibitors (FAPIs) and p-Cl-Phe-cyclo(d-Cys-Tyr-d-4-amino-Phe(carbamoyl)-Lys-Thr-Cys)d-Tyr-NH<sub>2</sub> (LM3) peptides for imaging of FAP somatostatin receptor 2 (SSTR2)–positive tumors. In this study, we designed synthesized a FAPI-LM3 heterobivalent molecule with <sup>68</sup>Ga evaluated its effectiveness in both tumor xenografts patients nasopharyngeal carcinoma (NPC). <b>Methods:</b> The...