A5014328178- Physics of Superconductivity and Magnetism
- Advanced biosensing and bioanalysis techniques
- RNA Interference and Gene Delivery
- Terahertz technology and applications
- Superconducting and THz Device Technology
- Gold and Silver Nanoparticles Synthesis and Applications
- Semiconductor Quantum Structures and Devices
- Iron-based superconductors research
- Bacteriophages and microbial interactions
- Magnetic properties of thin films
- Synthesis and Biological Evaluation
- Magnesium Oxide Properties and Applications
- Catalysis and Oxidation Reactions
- Quantum and electron transport phenomena
- Copper-based nanomaterials and applications
- Supramolecular Self-Assembly in Materials
- Click Chemistry and Applications
- Synthesis and Reactions of Organic Compounds
- Organic Electronics and Photovoltaics
- Rare-earth and actinide compounds
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Microwave Dielectric Ceramics Synthesis
- Plasmonic and Surface Plasmon Research
- Advanced ceramic materials synthesis
Nanjing University
2015-2025
Collaborative Innovation Center of Advanced Microstructures
2019-2024
Shaanxi Normal University
2021-2024
National Laboratory of Solid State Microstructures
2020-2024
Berlin School of Economics and Law
2024
Qingdao University of Technology
2024
State Key Laboratory of Analytical Chemistry for Life Science
2021-2023
City University of Hong Kong, Shenzhen Research Institute
2022
Southeast University
2007-2022
University of Jinan
2020
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTSynthesizing and Dispersing Silver Nanoparticles in a Water-in-Supercritical Carbon Dioxide MicroemulsionMin Ji, Xiaoyuan Chen, Chien M. Wai, John L. FultonView Author Information Department of Chemistry, University Idaho Moscow, 83844 Environmental Health Sciences Division Pacific Northwest National Laboratory Richland, Washington 99352 Cite this: J. Am. Chem. Soc. 1999, 121, 11, 2631–2632Publication Date (Web):March 9, 1999Publication...
The chemical structure of a drug determines its physicochemical properties, further ADME/Tox and ultimately affects pharmacological activity. Medicinal chemists can regulate the activity molecules by modifying their structure. Ring systems functional groups are important components drug. proportion non-hydrocarbon atoms among non-hydrogen reflects heavy three factors have considerable potential for assessment drug-like properties organic molecules. However, to best our knowledge, there been...
Abstract DNA origami technology has proven to be an excellent tool for precisely manipulating molecules and colloidal elements in a three-dimensional manner. However, fabrication of single crystals with well-defined facets from highly programmable, complex units is great challenge. Here, we report the successful Wulff shapes high yield. By regulating symmetries binding modes building blocks, crystalline can designed well-controlled. The are then used induce precise growth ultrathin layer...
We have combined a stand-alone Bi2Sr2CaCu2O8 intrinsic Josephson junction stack, emitting terahertz radiation, with YBa2Cu3O7 grain boundary acting as detector. The detector is mounted on lens, positioned 1.2 cm away from the emitter similar lens. With radiating at 0.5 THz, we observed up to 7 Shapiro steps current-voltage characteristic of ac current induced in this was 0.9 mA, and dissipated power 1.8 μW. setup, although far being optimized, may be considered first step towards an...
We report on Bi2Sr2CaCu2O8 (BSCCO) intrinsic Josephson junction stacks with improved cooling, allowing for a remarkable increase in emission frequency compared to the previous designs. started BSCCO stack embedded between two gold layers. When mounted standard way single substrate, emits range of 0.43–0.82 THz. then glued second, thermally anchored substrate onto sample surface. The maximum voltage this better cooled and dimension-unchanged was increased and, accordingly, both frequencies...
Abstract The finite periodic arrangement of functional nanomaterials on the two‐dimensional scale enables integration and enhancement individual properties, making them an important research topic in field tuneable nanodevices. Although layer‐controllable lattices such as graphene have been successfully synthesized, achieving similar control over colloidal nanoparticles remains a challenge. DNA origami technology has achieved remarkable breakthroughs programmed nanoparticle assembly. Based...
Molybdenum carbide materials are considered to be promising hydrogen evolution reaction (HER) electrocatalysts due their similar electronic structures and catalytic activities Pt-based catalysts. Here, we report a facile synthesis of β-Mo2C nanoparticles supported on nitrogen-doped carbon nanotubes (Mo2C/N–C) through one-step carbonization Mo-containing anion-doped polyaniline nanotubes. It has been revealed that the size obtained Mo2C can effectively tuned by applying different anions. With...
Assembly of distinct types species, particularly possessing anisotropic configurations, is the premise to broaden structural diversity and explore materials' collective properties. However, it remains a great challenge programmably cocrystallize manifold nanoparticles with desired assembly mode, because requires not only complementarity both sizes shapes but also control over their directional interactions. Here, by introducing DNA origami technique into lattice engineering, we synthesize...
Developing a tunable source of high-power terahertz radiation is an ongoing research challenge, with promise for applications including biosensing and high-speed communication. The authors show that the THz emission from stack intrinsic Josephson junctions in cuprate superconductor embedded between two gold layers can be manipulated by focused laser beam. output power increased as much 75% irradiation, tuned continuously rapidly beam moved along length stack, locally heating different spots sample.
Sources of terahertz radiation (between the far infrared and microwave frequencies) are in high demand for a host applications. The authors report on what is essentially ``T-ray flashlight'', compact portable source tunable, continuous light, employing stack intrinsic Josephson junctions cuprate superconductor as emitter. This economical convenient device can be driven by one everyday 1.5-V battery, should facilitate airport security, nondestructive evaluation, remote detection trace gases,...
Harnessing the programmable nature of DNA origami for controlling structural features in crystalline materials affords opportunities to bring crystal engineering a remarkable level. However, challenge crystallizing single type unit into varied outcomes remains, given requirement specific designs each targeted structure. Here, we show that crystals with distinct equilibrium phases and shapes can be realized using morphology an allosteric factor modulate binding coordination. As result,...
Recently, it has been found that, when operated at large input power, the linewidth $\ensuremath{\Delta}f$ of terahertz radiation emitted from intrinsic Josephson junction stacks can be as narrow some megahertz. In this high-bias regime, a hot spot coexists with regions which are still superconducting. Surprisingly, was to decrease increasing bath temperature. We present simple model describing dynamics stack in presence by two parallel arrays pointlike junctions and an additional shunt...
We used one-dimensional coupled sine-Gordon equations combined with heat diffusion to numerically investigate the thermal and electromagnetic properties of a $300\,\mu\mathrm{m}$ long intrinsic Josephson junction stack consisting $N = 700$ junctions. The junctions in are $M$ segments where we assume that inside segment all behave identically. Most simulations for $M 20$. For not too high bath temperatures there is appearence hot spot at bias currents. In terms properties, robust standing...
We used 2D coupled sine-Gordon equations combined with 3D heat diffusion to numerically investigate the thermal and electromagnetic properties of a $250 \times 70\,\mu\mathrm{m}^2$ intrinsic Josephson junction stack. The 700 junctions are grouped 20 segments; we assume that in segment all behave identically. At large input power hot spot forms Resonant modes, oscillating either along length ((0, $n$) modes) or width (($m$, 0) stack having more complex structure, can be excited both without...
Detection and imaging using light at terahertz frequencies continues to be a topic of keen interest for numerous applications. Recent investigations have shown that stacks natural Josephson junctions in cuprate superconductors are suitable emitters THz radiation; now our attention turns effective use such source. Using two setups, one featuring bolometric detection the other heterodyne, authors achieve results respectively comparable those time-domain spectroscopy systems based on quantum...
The crystallization methodology of DNA origami frames has found salient utility in large-scalely integrating multifarious functional components following organized arrangements, thus opening up the possibilities for optical, biological, and other interdisciplinary applications. However, single strand-dominated spacing region between adjacent units extremely restricted adjustment separations, leading soft crystals susceptible to environmental influences. Herein, we developed a...
Abstract The determination of the pairing symmetry is one most crucial issues for iron-based superconductors, which various scenarios are discussed controversially. Non-magnetic impurity substitution promising approaches to address issue, because pair-breaking mechanism from non-magnetic impurities should be different models. Previous experiments demonstrated that zinc can suppress superconductivity superconductors. Here we demonstrate local destruction by in Ba 0.5 K Fe 2 As exploring...
We report on the electrothermal behavior and terahertz emission properties of a stand-alone Bi2Sr2CaCu2O8 intrinsic Josephson junction stack contacted in three-terminal configuration. One terminal is used as collective ground while other two, contacting from its right left side, allow to vary current injection profile. At high bias, hot spot forms stack. Its appearance position can be controlled by varying ratios injected currents. Depending this ratio, emitted power an order magnitude....