Results 51 to 60 of about 396,431 (201)

Pressure‐Tuned Superconducting Dome and Persistent Charge‐Density‐Wave Order in NdSeTe2

Advanced Science, EarlyView.
NdSeTe2 exhibits an unusual pressure‐tuned phase diagram in which charge‐density‐wave order does not disappear at optimal superconductivity. Instead, Raman spectroscopy reveals a transformation from long‐range to short‐range correlations that remain invisible to resistivity and persist across the entire superconducting dome.
Shuyang Wang, Chao An, Jiaqi Chen, Lili Zhang, Yonghui Zhou, Xuliang Chen, Zhaorong Yang   +6 more
wiley   +1 more source

An enhanced novel surface plasmon resonance sensor employing perovskite nanomaterial and bismuth ferrite to identify different ethanol concentrations

Scientific Reports
This study presents a novel surface plasmon resonance (SPR) biosensor composed of silver (Ag), bismuth ferrite (BiFeO3), nickel (Ni), and perovskite nanomaterial (MAPbBr3).
Malek G. Daher, Mostafa R. Abukhadra, Samer M. Srour, Emad Solouma, Stefano Bellucci, Haifa A. Alqhtani, Hussein A. Elsayed, Ahmed Mehaney   +7 more
doaj   +1 more source

Unveiling Anisotropic in‐Plane Thermal Conductivity and Thermal Expansion Coefficient in Low‐Symmetry Few‐Layer ReS2

Advanced Science, EarlyView.
Simultaneous two‐mode Raman thermometry reveals strong in‐plane anisotropic thermal conductivity and thermal expansion coefficients in low‐symmetry few‐layer ReS2. By decoupling thermal transport along the crystallographic a‐ and b‐axes within a single optical configuration, this study provides robust experimental evidence and ab initio theoretical ...
Manab Mandal, Prahalad Kanti Barman, Susmita Jana, Saroj Poudyal, Kaushalya Kumari, Sourav Mondal, Abhishek Misra, Birabar Ranjit Kumar Nanda, Pramoda Kumar Nayak, Kanikrishnan Sethupathi   +9 more
wiley   +1 more source

Band Gaps and Waveguiding in Phoxonic Silicon Crystal Slabs [PDF]

, 2011
We discuss the simultaneous existence of phoxonic, i.e., phononic and photonic, band gaps in a periodic array of holes drilled in a Si membrane. We investigate in detail both the square and the honeycomb lattices. We show that complete phoxonic band gaps
Papanikolaou, N., Pennec, Yan, ElHassouani, Y., Benchabane, S., Martinez, Alejandro, Laude, Vincent, Laude, V., Benchabane, Sarah, Vasseur, J., El Hassouani, Y., ElBoudouti, EH, Rouhani, B. Djafari, Li, C., Djafari Rouhani, Bahram, Li, Chanseng, Papanikolaou, Nikos, El Boudouti, E. H., Vasseur, J. O., Pennec, Y.   +18 more
core  

Ultrasound wave propagation in time-varying phononic crystals

, 2008
Phononic crystals demonstrate remarkable effects, but are static and unchangeable. We wish to use dynamic materials as the scatterers within phononic crystals as a means of controlling their properties.
Wright, DW, Cobbold, RSC, Yu, ACH
core   +1 more source

Slow sound mode prediction and band structure calculation in 1D phononic crystal nanobeams using an artificial neural network

Science Progress
Phononic crystals, which are artificial crystals formed by the periodic arrangement of materials with different elastic coefficients in space, can display modulated sound waves propagating within them.
Fu-Li Hsiao, Yen-Tung Yang, Wen-Kai Lin, Ying-Pin Tsai   +3 more
doaj   +1 more source

Q‐LEAP: Millisecond Hyperdimensional Optimization for Full‐Spectrum Optical Metamaterials

Advanced Science, EarlyView.
Q‐LEAP integrates physics‐informed residual machine learning with factorization‐machine‐encoded quantum annealing to design full‐spectrum optical metamaterials. It explores a 2108 design space and, in a single 2.56 ms annealing step, reaches 85.83% of the theoretical FoM limit, enabling selective 5‐8 µm emission with 3–5 and 8–14 µm suppression and ∼40×
Zikang Guo, Yunwen Wu, Yuhui Guo, Shenghong Ju   +3 more
wiley   +1 more source

Phononic crystals and elastodynamics: Some relevant points

AIP Advances, 2014
In the present paper we review briefly some of the first works on wave propagation in phononic crystals emphasizing the conditions for the creation of acoustic band-gaps and the role of resonances to the band-gap creation. We show that useful conclusions
N. Aravantinos-Zafiris, M. M. Sigalas, M. Kafesaki, E. N. Economou   +3 more
doaj   +1 more source

Chiral‐Nematic Lattice Instability in Charge Density Wave of 1T‐TiSe2

Advanced Science, EarlyView.
The charge density wave of 1T‐TiSe2 appears chiral to surface probes yet loses all symmetry in spectroscopic measurements. This study reveals how cooperative condensation of multiple phonon modes stabilizes a chiral monoclinic ground state, while a shallow nematic energy landscape allows the lattice to break the remaining symmetry at negligible cost ...
Abdurrafi Ahsan Alghifari, Euihwan Do, Jae Whan Park, Han Woong Yeom   +3 more
wiley   +1 more source

Gradient index phononic crystals and metamaterials [PDF]

, 2019
Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation.
Jin, Yabin, Djafari Rouhani, Bahram, Djafari-Rouhani, Bahram, Torrent, Daniel, Jin Yabin, Torrent Daniel, Djafari-Rouhani Bahram   +6 more
core   +2 more sources