A5102708083- Graphene research and applications
- Boron and Carbon Nanomaterials Research
- 2D Materials and Applications
- Theoretical and Computational Physics
- Intermetallics and Advanced Alloy Properties
- Advanced Fiber Laser Technologies
- Advanced Condensed Matter Physics
- Topological Materials and Phenomena
- Diamond and Carbon-based Materials Research
- Laser-Matter Interactions and Applications
- Metal and Thin Film Mechanics
- Ammonia Synthesis and Nitrogen Reduction
- Physics of Superconductivity and Magnetism
- Iron-based superconductors research
- Graphite, nuclear technology, radiation studies
- Chemical Synthesis and Characterization
- Spectroscopy and Laser Applications
- Fiber-reinforced polymer composites
Center for High Pressure Science and Technology Advanced Research
2020-2025
Academia Sinica
2009
Institute of Physics
2005
Group V elements in crystal structure isostructural to black phosphorus with unique puckered two-dimensional layers exhibit exciting physical and chemical phenomena. However, as the first element of group V, nitrogen has never been found structure. Here, we report synthesis phosphorus-structured at 146 GPa 2200 K. Metastable was retained after quenching it room temperature under compression characterized situ during decompression 48 GPa, using synchrotron x-ray diffraction Raman...
Dynamics of materials under high-pressure conditions has been an important focus science, especially in the timescale pico- and femto-second electronic vibrational motion, which is typically probed by ultrafast laser pulses. To probe such dynamics, it requires integration devices with system. The combination transient absorption (TA) spectroscopy diamond anvil cells (DACs) a novel solution, yet intense pump scattering light resulting from small cross section DAC may limit spectral range...
A remarkable pressure-dependent structural transformation that includes significant phonon mode softening and robust superconductivity is discovered in layered 2D GeP<sub>5</sub>.
In situ high-pressure energy dispersive x-ray diffraction experiments on polycrystalline powder TiN with NaCl-type structure have been conducted the pressure up to 30.1 GPa by using a diamond anvil cell instrument synchrotron radiation at room temperature. The experimental results suggest that an isostructural phase transition might exist about 7 as revealed discontinuity of V/V0 pressure.
Comprehensive understanding of the direct transformation pathway from graphite to diamond under high temperature and pressure has long been one fundamental goals in materials science. Despite considerable experimental theoretical progress, current studies have mainly focused on local microstructural characterizations recovered samples, which certain limitations for high-temperature high-pressure products, often exhibit diversity. Here, we report pressure-induced phase transition behavior...
Attaining superconducting critical temperatures (Tc) beyond the limit around 14 K observed thus far in spinel compounds AB2X4 (A, B = transition metals, X O/chalcogen) could elucidate interaction intricacies and inform materials design. This work spotlights CuIr2S4, which exhibits a distinct metal-insulator below 230 K, as an unconventional candidate for activation under high pressure. Through transport, diffraction, spectroscopy experiments conducted at pressures up to 224 GPa, we unveil...