A5103231509- biodegradable polymer synthesis and properties
- Nanowire Synthesis and Applications
- Semiconductor materials and devices
- Microplastics and Plastic Pollution
- Advanced Memory and Neural Computing
- Advancements in Semiconductor Devices and Circuit Design
- Microbial Metabolic Engineering and Bioproduction
- Biofuel production and bioconversion
- Polyamine Metabolism and Applications
- Enzyme Structure and Function
- Carbon dioxide utilization in catalysis
- Advanced Sensor and Energy Harvesting Materials
- Transition Metal Oxide Nanomaterials
- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Advanced Electron Microscopy Techniques and Applications
- Copper-based nanomaterials and applications
- Conducting polymers and applications
- Epoxy Resin Curing Processes
- Click Chemistry and Applications
- Neural Networks and Reservoir Computing
- Silicon Nanostructures and Photoluminescence
- 2D Materials and Applications
- Cancer-related gene regulation
- Nanomaterials and Printing Technologies
Peking University
2021-2024
Southwest University
2024
Zhejiang Institute of Freshwater Fisheries
2024
Chongqing University of Education
2024
Massachusetts Institute of Technology
2003-2006
IIT@MIT
2003
Intelligent materials with adaptive response to external stimulation lay foundation integrate functional systems at the material level. Here, experimental observation and numerical simulation, we report a delicate nano-electro-mechanical-opto-system naturally embedded in individual multiwall tungsten disulfide nanotubes, which generates distinct form of in-plane van der Waals sliding ferroelectricity from unique combination superlubricity piezoelectricity. The enables programmable...
Abstract 2D layered semiconductors with excellent light−matter interaction and atomic‐scale thickness have been envisioned as promising candidates for more than Moore beyond technologies. Here, the first time, a multi‐functional platform is reported that fabricated entirely from wrinkle‐free ferroelectric semiconductor α‐In 2 Se 3 integrated photodetector, reconfigurable logic switching, visual perception processing functions. The intensity‐ wavelength‐dependent resistance used to demodulate...
Precise control over crystallinity and morphology of conjugated polymers (CPs) is essential for progressing organic electronics. However, manufacturing single-crystal thin films CPs presents substantial challenges due to their complex molecular structures, distorted chain conformations, unbalanced crystallization kinetics. In this work, we demonstrate a universal nanoconfined molecular-dipole orientating strategy craft high-quality variety CPs, spanning from traditional thiophene-...
Wautersia eutropha, formerly known as Ralstonia a gram-negative bacterium, accumulates polyhydroxybutyrate (PHB) insoluble granules inside the cell when nutrients other than carbon are limited. In this paper, we report findings from kinetic studies of granule formation and degradation in W. eutropha H16 obtained using transmission electron microscopy (TEM). nitrogen-limited growth medium, phenotype cells at early stages was revealed for first time. At center cells, dark-stained "mediation...
Intracellular poly[D-(-)-3-hydroxybutyrate] (PHB) depolymerases degrade PHB granules to oligomers and monomers of 3-hydroxybutyric acid. Recently an intracellular depolymerase gene (phaZ1) from Ralstonia eutropha was identified. We now report identification candidate genes R. eutropha, namely, phaZ2 phaZ3, their characterization in vivo. phaZ1 used identify two the genome metallidurans. these were then design degenerate primers. These primers PCR methods on new eutropha: phaZ3. Inverse...
In recent years, thin layered indium selenide (In2Se3) has attracted rapidly increasing attention due to its fascinating properties and promising applications. Here, we report the temperature-driven α-β phase transformation enhanced electronic property of 2H α-In2Se3. We find that α-In2Se3 transforms β-In2Se3 when it is heated a high temperature, temperature increases from 550 650 K with thickness decreasing 67 17 nm. Additionally, annealing sample below can effectively improve field-effect...
There is increased interest in ultrathin flexible devices with thicknesses of <1 micrometers due to excellent conformability toward advanced laminated bioelectronics. However, because limitations materials, device structure, and fabrication methodology, the performance these circuits insufficient support higher-level applications. Here, we report high-performance carbon nanotube–based thin-film transistors (TFTs) differential amplifiers on polyimide films a total thickness <180...
Polyhydroxybutyrates (PHBs) are polyoxoesters generated from (R)3-hydroxybutyryl coenzyme A by PHB synthase. During the polymerization reaction, polymers undergo a phase transition and generate granules. Wautersia eutropha can transiently accumulate when it is grown in nutrient-rich medium (up to 23% of cell dry weight dextrose-free tryptic soy broth [TSB]). homeostasis under these growth conditions was examined quantitative Western analysis monitor proteins present, their levels, changes...
Polyhydroxybutyrate (PHB) synthases catalyze the polymerization of (R)-3-hydroxybutyryl-CoA (HB-CoA) into high molecular weight PHB, biodegradable polymers. The class III PHB synthase from Allochromatium vinosum is composed a 1:1 mixture two ∼40 kDa proteins: PhaC and PhaE. Previous studies using site-directed mutagenesis saturated trimer hydroxybutyryl-CoA have suggested importance C149 (in covalent catalysis), H331 activation C149), D302 hydroxyl group for ester bond formation) in process....
Polyhydroxybutyrate (PHB) synthase catalyzes the polymerization of (R)-3-hydroxybutyryl-CoA (CoA = coenzyme A) into high molecular weight PHB. Recombinant wild-type (wt) class III from Allochromatium vinosum (PhaCPhaEAv), antibodies to this and PHB, [14C]hydroxybutyryl-CoA (HB-CoA) have been used detect oligomeric hydroxybutyrate (HB) units covalently bound using sodium dodecyl sulfate−polyacrylamide gel electrophoresis analysis. Although a distribution products is typically observed, short...
We report a tunneling diode enabling efficient and dense electron emission from SiO2 with low poisoning sensitivity. Benefiting the shallow channel exposed to vacuum affinity of (0.9 eV), hot electrons into cathode are efficiently emitted much less restriction in both space energy than those previous sources. Monte Carlo simulations on device performance show an efficiency as high 87.0% density up 3.0 × 105 A/cm2. By construction based Si conducting filaments electroformed SiO2, 83.7% 4.4...
High-performance InAs nanowire transistors are realized by improving the surface and interfaces coating with thermally oxidized Y 2 O 3.
Abstract Understanding the growth mechanisms of nanomaterials is crucial for effectively controlling their morphology which may affect properties. Here, process indium nanoplates studied using in situ liquid cell transmission electron microscopy. Quantitative analysis shows that nanoplate limited by surface reaction. Besides, has two stages, different from other metal reported previously. At first stage, particles transform gradually face‐centered cubic to body‐centered tetragonal (bct)...
Indium arsenide (InAs) nanowire (NW) is a promising semiconductor material in modern electronic and optoelectronic devices due to its fascinating properties such as narrow direct band gap, high mobility, etc. However, the surface interface are major factors limiting performance of InAs NW devices. Here, we demonstrate an approach improve field-effect transistor (FET) by passivating with ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)). After film coating,...
Optical synapse is the basic component for optical neuromorphic computing and attracting great attention, mainly due to its potential in many fields, such as image recognition, artificial intelligence visual perception systems. However, with infrared (IR) response has rarely been reported. InAs nanowires (NWs) have a direct narrow bandgap large surface volume ratio, making them promising material IR detection. Here, we demonstrate near-infrared (NIR) (750 1550 nm) first time based on...
Understanding how nanomaterials evolve during the etching process is critical in many fields. Herein, wet chemical of zinc oxide (ZnO) nanowires studied situ radiolytic water via liquid cell transmission electron microscopy (LCTEM). The dissolution rate thin constant with reducing diameter, while thick (with original diameter being larger than 95 nm) show complicated behaviors. at first stage and then increases. Anisotropic occurs both ends distinct tips are formed. Different polarities two...
Nanowire (NW) field-effect transistors (FETs) have great potential in next-generation integrated circuits. InAs NWs are suitable for N-type because of their excellent electrical properties. However, unlike the Si/SiO