A5021451612- Mechanical and Optical Resonators
- Photonic and Optical Devices
- Advanced MEMS and NEMS Technologies
- 2D Materials and Applications
- Advanced Memory and Neural Computing
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Force Microscopy Techniques and Applications
- MXene and MAX Phase Materials
- Ferroelectric and Negative Capacitance Devices
- Acoustic Wave Resonator Technologies
- Semiconductor materials and devices
- Advancements in Battery Materials
- Advanced Fiber Laser Technologies
- Advanced Battery Materials and Technologies
- GaN-based semiconductor devices and materials
- Nanowire Synthesis and Applications
- Advanced Computational Techniques and Applications
- Perovskite Materials and Applications
- Supercapacitor Materials and Fabrication
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Radiative Heat Transfer Studies
- Transition Metal Oxide Nanomaterials
Shanghai Jiao Tong University
2015-2025
Micro & Nano Research Institute
2025
Qingdao University
2015-2024
Xi’an University of Posts and Telecommunications
2022-2024
Chang'an University
2024
Shanghai Institute of Microsystem and Information Technology
2024
Chongqing Metrology Quality Inspection and Research Institute
2023
Anhui University of Science and Technology
2023
Joint Institute for Nuclear Astrophysics
2022
University of Michigan
2022
We show that silicon-based metagratings capable of large-angle, multifunctional performance can be realized using inverse freeform design. These devices consist nonintuitive nanoscale patterns and support a large number spatially overlapping optical modes per unit area. The quantity modes, in combination with their optimized responses, provides the degrees freedom required to produce high-efficiency devices. To demonstrate power versatility our approach, we fabricate efficiently deflect...
Atomic-scale ferroelectrics are of great interest for high-density electronics, particularly field-effect transistors, low-power logic, and nonvolatile memories. We devised a film with layered structure bismuth oxide that can stabilize the ferroelectric state down to 1 nanometer through samarium bondage. This be grown on variety substrates cost-effective chemical solution deposition. observed standard hysteresis loop thickness ~1 nanometer. The thin films thicknesses range from 4.56...
Atomically thin semiconductor resonators vibrating at radio frequencies with exceptional tunability and broad dynamic range.
We report on experimental demonstration of a new type nanoelectromechanical resonators based black phosphorus crystals. Facilitated by highly efficient dry transfer technique, crystalline flakes are harnessed to enable drumhead vibrating at high and very frequencies (HF VHF bands, up ~100MHz). investigate the resonant vibrational responses from crystals devising both electrical optical excitation schemes, in addition measuring undriven thermomechanical motions these suspended nanostructures....
Emerging atomic layer semiconducting crystals such as molybdenum disulfide (MoS2) are promising candidates for flexible electronics and strain-tunable devices due to their ultrahigh strain limits (up ∼20–30%) bandgaps. However, high levels, controllable isotropic anisotropic biaxial strains in single- few-layer MoS2 on device-oriented substrates permitting convenient fast tuning, remain unexplored. Here, we demonstrate a "blown-bubble" bulge technique efficiently applying large substrate. As...
Abstract Metal‐organic frameworks (MOFs) have exhibited encouraging catalytic activity for the oxygen evolution reaction (OER), a crucial process water electrolysis to produce green hydrogen. Nonetheless, distinguishing source of and establishing structure‐composition‐property relationships MOFs during OER processes remain challenging. Here, first time, operando X‐ray absorption spectroscopy (XAS) is utilized monitor structural identify active components ferrocene‐based (Ni‐Fc) OER....
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Black phosphorus (P) has emerged as a layered semiconductor with unique crystal structure featuring corrugated atomic layers and strong in-plane anisotropy in its physical properties. Here, we demonstrate that the orientation mechanical free-standing black P thin can be precisely determined by spatially resolved multimode nanomechanical resonances. This offers new means for resolving important device platforms situ beyond conventional optical electrical calibration techniques. Furthermore,...
With increasing challenges towards continued scaling and improvement in performance faced by electronic computing, mechanical computing has started to attract growing interests. Taking advantage of the degree freedom solid state devices, micro/nano-electromechanical systems (MEMS/NEMS) could provide alternative solutions for future memory with ultralow power consumption, compatibility harsh environments, high reconfigurability. In this review, MEMS/NEMS-enabled memories logic processors were...
We report on fabrication of large-scale arrays suspended molybdenum disulfide (MoS2) atomic layers, as two-dimensional (2D) MoS2 nanomechanical resonators. employ a water-assisted lift-off process to release chemical vapor deposited (CVD) layers from donor substrate, followed by an all-dry transfer onto microtrench arrays. The resultant large single- and few-layer drumhead resonators (0.5 2um in diameter) offer fundamental resonances (f_0) the very high frequency (VHF) band (up ~120MHz)...
This paper studies the impact of hot pressing on electrical and thermal performance thick (thickness >5 μm) conducting polymer poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films after acid treatment. Thick usually exhibit low conductivities similar to bulk because charge heat carriers are easily scattered by irregular arrangement crystalline domains inside polymer. In this work, in-plane conductivity hot-pressed PEDOT:PSS film exceeded 1500 S/cm, 50% enhancement was...
Abstract The theoretical capacity of pristine silicon as anodes for lithium‐ion batteries (LIBs) can reach up to 4200 mAh g −1 , however, the low electrical conductivity and huge volume expansion limit their practical application. To address this challenge, a precursor strategy has been explored induce curling graphene oxide (GO) flakes enclosing Si nanoparticles by selecting protonated chitosan both assembly inducer carbon precursor. are dispersed first in slurry GO ball milling, then...
Resonant nanoelectromechanical systems (NEMS) based on two-dimensional (2D) materials such as molybdenum disulfide (MoS2) are interesting for highly sensitive mass, force, photon, or inertial transducers, well fundamental research approaching the quantum limit, by leveraging mechanical degree of freedom in these atomically thin materials. For resonators, quality factor (Q) is essential, yet mechanism and tuning methods energy dissipation 2D NEMS resonators have not been fully explored. Here,...
The gradual, abrupt, and abnormal reset transitions have been experimentally demonstrated in resistive random access memories (RRAMs). Yet a compact model that could well explain reproduce the various observed phenomena is still under active exploration due to physical processes involved. In this study, we develop consistent for bipolar/unipolar RRAMs, which can comprehensively gradual abrupt transitions, as many during processes. These include reverse set (reset failure), gentle process...
In 2-D van der Waals heterostructures, interactions between atomic layers dramatically change the vibrational properties of hybrid system and demonstrate several interesting phenomena that are absent in individual materials. this paper, we have investigated heterostructure transition metal dichalcogenide (TMD) hexagonal boron nitride (hBN) on gold film at low- high-frequency ranges by Raman spectroscopy. Nineteen modes been observed from sample, including a new interlayer coupling mode 28.8...