Results 91 to 100 of about 394,492 (288)

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Dynamic bound states in the continuum

open access: yesOptica, 2019
All-dielectric metasurfaces are a versatile platform to investigate a host of unconventional physical scattering responses. Effects, including high absorption and Huygens’ surfaces, have been demonstrated; however, a more exotic materialization—termed bound states in the continuum (BSCs)—exists and consists of nonradiating localized waves that lie ...
Kebin Fan   +2 more
openaire   +2 more sources

Bound states in the continuum from supersymmetric quantum mechanics [PDF]

open access: yesPhysical Review A, 1993
15 pages, in latex, 10 figures will be sent by mail, upon ...
Pappademos, J.   +2 more
openaire   +3 more sources

All-dielectric metasurfaces with high Q-factor Fano resonances enabling multi-scenario sensing

open access: yesNanophotonics, 2022
We propose and numerically demonstrate high Q-factor sensors based on all-dielectric metasurfaces, which are very sensitive to the change of the refractive index of the surrounding media and the incident angle.
Chen Xueer   +5 more
doaj   +1 more source

ac Josephson effect in asymmetric superconducting quantum point contacts [PDF]

open access: yes, 2004
We investigate ac Josephson effects between two superconductors connected by a single-mode quantum point contact, where the gap amplitudes in the two superconductors are unequal.
A. Furusaki   +10 more
core   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Applications of bound states in the continuum in photonics

open access: yesNature Reviews Physics, 2023
Bound states in the continuum (BICs) have attracted attention in photonics owing to their interesting properties. For example, BICs can effectively confine light in a counter-intuitive way and the far-field radiation of photonic structures that exhibit BICs manifests fascinating topological characteristics.
Meng Kang   +3 more
openaire   +3 more sources

Nanogap enhancement of the refractometric sensitivity at quasi-bound states in the continuum in all-dielectric metasurfaces

open access: yesNanophotonics, 2023
All-dielectric metasurfaces have great potential as highly sensitive refractometric sensors relying on their spectral shifts because of an extensive range of design flexibilities and their smaller absorption losses than plasmonic platforms.
Watanabe Keisuke, Iwanaga Masanobu
doaj   +1 more source

Quasi-Bound States in the Continuum Enabled Strong Terahertz Chiroptical Response in Bilayer Metallic Metasurfaces

open access: yesCrystals, 2022
Bound state in the continuum (BIC) as a novel non-radiating state of light in the continuum of propagating modes has received great attention in photonics. Recently, chiral BICs have been introduced in the terahertz regime.
Yaolin Hu   +4 more
doaj   +1 more source

Topology Transitions of Anisotropy Induced Bound States in the Continuum [PDF]

open access: yes, 2018
We demonstrate that Bound states In the Continuum (BICs) are supported in planar anisotropic structures where the optic axes are arbitrarily oriented. Moreover, we reveal fundamental new topological properties of these BICs that depend on the relative ...
Artigas García, David   +4 more
core  

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