A5100709879- Carbon Nanotubes in Composites
- Graphene research and applications
- Microstructure and mechanical properties
- Advancements in Battery Materials
- Perovskite Materials and Applications
- Force Microscopy Techniques and Applications
- Numerical methods in engineering
- Advanced Battery Materials and Technologies
- ZnO doping and properties
- Mechanical and Optical Resonators
- Metal and Thin Film Mechanics
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- Quantum Dots Synthesis And Properties
- High-Velocity Impact and Material Behavior
- Ferroelectric and Piezoelectric Materials
- 2D Materials and Applications
- Metal Forming Simulation Techniques
- GaN-based semiconductor devices and materials
- Aluminum Alloys Composites Properties
- Ga2O3 and related materials
- Thermal Radiation and Cooling Technologies
- Mechanical Behavior of Composites
- MXene and MAX Phase Materials
- Diamond and Carbon-based Materials Research
Tsinghua University
2016-2025
Nanjing Tech University
2020-2025
Foxconn (China)
2016-2025
State Key Laboratory of Materials-Oriented Chemical Engineering
2025
Wuhan University of Technology
2024
Qualcomm (United States)
2024
Guangzhou University
2024
Zhejiang University
2010-2024
North University of China
2010-2024
Southwest University
2023-2024
Functionalized graphene has been extensively studied with the aim of tailoring properties for gas sensors, superconductors, supercapacitors, nanoelectronics, and spintronics. A bottleneck is capability to control carrier type density by doping. We demonstrate that a two-step process an efficient way dope graphene: create vacancies high-energy atom/ion bombardment fill these desired dopants. Different elements (Pt, Co, In) have successfully doped in single-atom form. The high binding energy...
A uniform Fe(3)O(4) sheath is magnetron sputtered onto aligned carbon nanotube (CNT) scaffolds that are directly drawn from CNT arrays. The Fe(3)O(4)-CNT composite electrode, with the size of confined to 5-7 nm, exhibits a high reversible capacity over 800 mAh g(-1) based on total electrode mass, remarkable retention, as well rate capability. excellent performance attributable superior electrical conductivity CNTs, loading sheath, and structural retention anode cycling. As inexpensive...
Adaptive camouflage in thermal imaging, a form of cloaking technology capable blending naturally into the surrounding environment, has been great challenge past decades. Emissivity engineering for is regarded as more promising way compared to merely temperature controlling that dissipate large amount excessive heat. However, practical devices with an active modulation emissivity have yet be well explored. In this letter we demonstrate device efficient radiance control, which consists...
Dense networks of deformation twins endow metals and alloys with unprecedented mechanical properties. However, the formation mechanism these hierarchical twin structures remains under debate, especially their relations imperfect nature boundaries (TBs). Here, we investigate intrinsic deformability defective TBs in face-centered cubic metallic materials, where inherent kinks on a set primary are demonstrated to facilitate secondary nanotwins. This defect-driven twinning propensity is...
Abstract Conventional material processing approaches often achieve strengthening of materials at the cost reduced ductility. Here, we show that high-pressure and high-temperature (HPHT) treatment can help overcome strength-ductility trade-off in structural materials. We report an initially strong-yet-brittle eutectic high entropy alloy simultaneously doubling its strength to 1150 MPa tensile ductility 36% after HPHT treatment. Such synergy is attributed HPHT-induced formation a...
Oil-dispersible α-NaYF4 spherical nanoparticles and β-NaYF4 hexagonal-shaped nanoplates were synthesized by the liquid−solid two-phase approach at different reaction temperatures. The TEM FE-SEM images reveal that have a relatively narrow size distribution. In comparison with other methods, pure prepared under mild condition. grew interface slow crystallization rate, which may be preferable for achieving β-NaYF4.
The aprotic Li-O2 battery has attracted a great deal of interest because, theoretically, it can store far more energy than today's batteries. Toward unlocking the capabilities this neotype storage system, noble metal-catalyzed high surface area carbon materials have been widely used as O2 cathodes, and some them exhibit excellent electrochemical performances in terms round-trip efficiency cycle life. However, whether these outstanding are backed by reversible formation/decomposition Li2O2,...
Two chemically tailored new conjugated copolymers, HSL1 and HSL2, were developed applied as hole selective layers to improve the anode interface of fullerene/perovskite planar heterojunction solar cells. The introduction polar functional groups on polymer side chains increases surface energy (HSLs), which promote better wetting with perovskite films lead full coverage high crystallinity. deep highest occupied molecular orbital levels HSLs align well valence band semiconductors, resulted in...
Abstract The unique correspondence between mathematical operators and photonic elements in wave optics enables quantitative analysis of light manipulation with individual optical devices. Phase‐transition materials are able to provide real‐time reconfigurability these devices, which would create new functionalities via (re)compilation operators, as those achieved other fields such field‐programmable gate arrays (FPGA). Here, by exploiting the hysteretic phase transition vanadium dioxide, an...
Abstract Advanced nanodevices require reliable nanocomponents where mechanically-induced irreversible structural damage should be largely prevented. However, a practical methodology to improve the plastic reversibility of nanosized metals remains challenging. Here, we propose grain boundary (GB) engineering protocol realize controllable in metallic nanocrystals. Both situ nanomechanical testing and atomistic simulations demonstrate that custom-designed low-angle GBs with controlled...
Metals containing abundant coherent twin boundaries (TBs) are able to sustain substantial plastic deformation without fracture due shear-induced TB migration and sliding. Retaining ductility in these metals, however, has proven difficult because detwinning rapidly exhausts mechanisms at large deformation, whereas sliding was only evidenced for loading on very specific crystallographic orientations. Here, we reveal the intrinsic shear deformability of twins nanocrystals using situ...
Abstract Two-dimensional (2D) semiconductors are promising in channel length scaling of field-effect transistors (FETs) due to their excellent gate electrostatics. However, contact still remains a significant challenge because the sharply raised resistance and deteriorated metal conductivity at nanoscale. Here, we construct 1D semimetal-2D semiconductor by employing single-walled carbon nanotube electrodes, which can push into sub-2 nm region. Such 1D–2D heterostructures exhibit smaller van...
Pure-bromide quasi-2D perovskite (PBQ-2DP) promises high-performance light-emitting diodes (LEDs), while a challenge remains on control over its n-phase distribution for bright true-blue emission. Present work addresses the through exploring passivation molecule of amino acid with reinforced binding energy, which generates narrow preferentially at n = 3 true blue emission 478 nm. Consequently, peak external quantum efficiency 5.52% and record brightness 512 cd m–2 are achieved PBQ-2DP-based...
Developing highly active photocatalysts that can directly utilize clean, cheap, and sustainable solar energy to achieve an efficient carbon dioxide (CO2) cycloaddition reaction under mild conditions (1 bar of CO2) remains a great challenge. In this paper, 2D/2D ZnIn2S4/Zn-NC S-scheme heterojunction composites were constructed by the in situ growth layered ZnIn2S4 on surface two-dimensional (2D) ZIF-L-derived Znδ+ (0 ≤ δ 2) N codoped skeletons (Zn-NC-T) via low-temperature solvothermal...
Grain boundaries (GBs) serve not only as strong barriers to dislocation motion, but also important carriers accommodate plastic deformation in crystalline solids. During deformation, the inherent excess volume associated with loose atomic packing GBs brings about a microscopic degree of freedom that can initiate GB plasticity, which is beyond classic geometric description GBs. However, identification this atomistic process has long remained elusive due its transient nature. Here, we use Au...
Super aligned carbon nanotube (CNT) film shows a fast high-temperature response: the can be heated to incandescence and cools down in about 1 ms. Using screen printing laser cutting, an incandescent CNT array that dynamically display Chinese characters is fabricated. More applications of may developed based on its response. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available...
With the superaligned carbon nanotube yarn as emitter, we have fabricated a 16 × pixel field emission display prototype by adopting screen printing and laser cutting technologies. A planar diode structure has been adopted. very sharp tip emitter can be formed cutting. Low voltage phosphor was coated on anode electrodes also printing. specially designed circuit, demonstrated dynamic character with prototype. The material fabrication technologies in this paper are both easy to scale up large areas.
The safety issue caused by the dendrite growth is not only a key research problem in lithium-ion batteries but also critical concern alkali metal (i.e., Li, Na, and K)–oxygen where solid usually used as anode. Herein, we demonstrate first dendrite-free K–O2 battery at ambient temperature based on liquid Na–K alloy unique liquid–liquid connection between electrolyte our anode-based provides homogeneous robust anode–electrolyte interface. Meanwhile, manage to show that compatible Na–O2...
Aligned carbon nanotube (CNT) films drawn from CNT arrays have shown the potential as thermoacoustic loudspeakers. chips with robust structures are proposed to promote applications. The silicon-based can play sound and fascinating rhythms by feeding alternating currents audio signal suspending thin yarn across grooves in them. In additional yarns, experiments further revealed more essential elements of chips, groove depth interdigital electrodes. pressure depends on grooves, thermal...