Results 81 to 90 of about 368 (139)

Observation of Excitonic Instability in a Monolayer Ta2NiSe5 With Strain Disorder

Advanced Science, Volume 13, Issue 43, 3 August 2026.
Monolayer Ta2${\rm Ta}_2$NiSe5${\rm NiSe}_5$ sustains an excitonic insulating phase up to 190 K, with Raman signatures of gap opening and critical excitonic fluctuations. Thickness‐independent large gap ratios highlight strong exciton‐phonon coupling, while substrate‐induced strain disorder depresses Tc, establishing monolayer Ta2${\rm Ta}_2$NiSe5${\rm
So Young Kim, Kwangrae Kim, Dowook Kim, Ji Eun Lee, Jieun Seok, Chang Il Kwon, Jo Hyun Yun, Chang‐Jong Kang, Jae Hoon Kim, H. W. Yeom, Tae‐Hwan Kim, Jonghwan Kim, B. J. Kim, Jun Sung Kim   +13 more
wiley   +1 more source

Fano-engineered high-Q compact nested ring resonator based photonic device for advanced multi-analyte biosensing applications

Scientific Reports
This work presents a compact, CMOS-compatible, Fano-engineered Nested Ring Resonator (NRR) for advanced biosensing applications. The proposed design supports three distinct Fano resonances within a single device, each exhibiting sharp spectral ...
Pragya Mishra, Tushar Gaur, Talabattula Srinivas   +2 more
doaj   +1 more source

Kondo Screening and Coupling of Spin States on Graphene Nanoribbon

physica status solidi (RRL) – Rapid Research Letters, Volume 20, Issue 8, August 2026.
Coupling of spin states, at the terminus of 7‐AGNR, is manifested by a continuous presence of Kondo resonance across the line profile of the two magnetic sites. This ubiquitous presence of the Kondo effect indicates mediated exchange interactions that may lead to exotic magnetic ordering at the peripheral atoms.
Abdou Hassanien
wiley   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1965-1993, August 2026.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

Independently Tunable Ultrasharp Double Fano Resonances in Coupled Plasmonic Resonator System

IEEE Photonics Journal, 2018
A coupled plasmonic resonator system is investigated by both the finite element method (FEM) and the multimode interference coupled-mode theory (MICMT).
Hongxue Fu, Shilei Li, Yilin Wang, Gang Song, Pengfei Zhang, Lulu Wang, Li Yu   +6 more
doaj   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Fano resonance in concentric ring apertures

Optics Express, 2013
We demonstrate a polarization-independent mid-infrared Fano resonance with extraordinary transmission when light passes through two concentric metallic ring apertures. A high-Q dark mode is indirectly excitated by coupling with a low-Q bright mode. A coupled optical resonator model is used to analyze the coupling process between the bright and dark ...
Jie, Shu, Weilu, Gao, Qianfan, Xu
openaire   +2 more sources

Increasing of Q Factor of Quasi‐Bound States in the Continuum With Increased Asymmetry Parameter in a Silicon Metasurface Array

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Quasi‐bound states in the continuum (qBICs) can support resonances with high quality (Q) factor. Traditionally, maintaining a high Q factor requires a small α, which brings significant challenges for nanofabrication. In contrast, our study finds an increase in the Q factor with increasing of α in a metasurface array composed of Si blocks with circular ...
Yi Tian, Qin Fu, Shuai Feng, Qingguo Du, Zhengying Li, Fei Xu   +5 more
wiley   +1 more source

Mie scattering as a cascade of Fano resonances

Optics Express, 2013
We reveal that the resonant Mie scattering by high-index dielectric nanoparticles can be presented through cascades of Fano resonances. We employ the exact solution of Maxwell's equations and demonstrate that the Lorenz-Mie coefficients of the Mie problem can be expressed generically as infinite series of Fano functions as they describe interference ...
Rybin, Mikhail V., Samusev, Kirill B., Sinev, Ivan S., Semouchkin, George, Semouchkina, Elena, Limonov, Mikhail F., Kivshar, Yuri   +6 more
openaire   +3 more sources

Robust Bound States in the Continuum in Mirror‐Symmetric Terahertz Metasurfaces

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
An ideal BIC, supported by local inversion symmetry in a mirror‐symmetric metasurface, transforms into a QBIC by introducing an asymmetry parameter α. This transition yields a finite Q‐factor following Q ∝ α−1.95, whereas the singular polarization state splits into two distinct circularly polarized points. This framework ensures robust BIC formation at
Die Zou, Zhen Zhou, Xia Cao, Rui Zhu, Keyu Tan, Zhiyong Wang, Xiaohua Xing, Jianquan Yao, Jianing Chen, Liang Wu   +9 more
wiley   +1 more source