Results 41 to 50 of about 151,052 (291)

Dichroism Effects in the Ionization of Polarized Atoms by Short Circularly Polarized Laser Pulses

Photonics, 2023
The dichroism effects, i.e., asymmetries of the ionization probability with respect to the inversion of either the atomic orientation (magnetic dichroism, MD) or the circular polarization degree of the photon beam (circular dichroism, CD), are ...
Alexei V. Meremianin, Nikolai L. Manakov
doaj   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

Evaluation of Molecular Polarizability and of Intensity Carrying Modes Contributions in Circular Dichroism Spectroscopies

Applied Sciences, 2019
We re-examine the theory of electronic and vibrational circular dichroism spectroscopy in terms of the formalism of frequency-dependent molecular polarizabilities.
Chiara Zanchi, Giovanna Longhi, Sergio Abbate, Giovanni Pellegrini, Paolo Biagioni, Matteo Tommasini   +5 more
doaj   +1 more source

Snapshot circular dichroism measurements

Optics Express, 2019
Two coherent waves carrying orthogonal polarizations do not interfere when they superpose, but an interference pattern is generated when the two waves share a common polarization. This well-known principle of coherence and polarization is exploited for the experimental demonstration of a novel method for performing circular dichroism measurements ...
Oriol Arteaga, Zoubir El-Hachemi, Razvigor Ossikovski   +2 more
openaire   +4 more sources

Circular Dichroism of Single Particles

, 2017
Circular dichroism (CD), induced by chirality, is an important tool for manipulating light or for characterizing morphology of molecules, proteins, crystals and nano-structures. CD is manifested over a wide size-range, from molecules to crystals or large
Barnea, A. Ronny, Ben-Moshe, Assaf, Cheshnovsky, Ori, Markovich, Gil, Vestler, Daniel, Vinegrad, Eitam   +5 more
core   +1 more source

Experimental demonstration of the microscopic origin of circular dichroism in two-dimensional metamaterials [PDF]

, 2016
Optical activity and circular dichroism are fascinating physical phenomena originating from the interaction of light with chiral molecules or other nano objects lacking mirror symmetries in three-dimensional (3D) space.
A Dazzi, A Kuzyk, A Rose, AB Khanikaev, AD Rakić, AE Çetin, AM Katzenmeyer, AV Kildishev, B Hopkins, B Lahiri, B Wang, C Pfeiffer, C Wu, C Wu, CL Holloway, DE Sikes, F Hao, F Lu, F Lu, J Kästel, JC Bose, JK Gansel, M Schaferling, M Schnell, M Schnell, M Schnell, M Schnell, N Arju, N Liu, N Ocelic, N Yu, NI Zheludev, P Alonso-Gonzalez, P Alonso-González, R Adato, S Fan, T Neuman, VA Fedotov, VA Fedotov, WA Bonner, Y Tang, Y Zhao, Y Zhao   +42 more
core   +2 more sources

Chiral Nanohoops as an Efficient Spin Polarization System

Advanced Functional Materials, EarlyView.
Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta, Philipp Seitz, Mathias Hermann, Birgit Esser, Ron Naaman   +4 more
wiley   +1 more source

Realizing electronically reconfigurable intrinsic chirality: from no absorption to maximal absorption of any desirable spin

Nanophotonics
Circular dichroism – the spin-selective absorption of light – finds diverse applications in medicine, antennas and microwave devices. In this work, we propose and experimentally demonstrate an ultrathin electronically reconfigurable chiral metasurface ...
Khan Muhammad Ismail, Khan Tayyab Ali, Abdelbaky Moustafa, Wong Alex M. H.   +3 more
doaj   +1 more source

Metasurfaces Assisted Twisted α-MoO₃ for Spinning Thermal Radiation

Micromachines, 2022
Spinning thermal radiation has demonstrated applications in engineering, such as radiation detection and biosensing. In this paper, we propose a new spin thermal radiation emitter composed of the twisted bilayer α-MoO3 metasurface; in our study, it ...
Yasong Sun, Derui Zhang, Biyuan Wu, Haotuo Liu, Bing Yang, Xiaohu Wu   +5 more
doaj   +1 more source

Elliptical dichroism: operating principle of planar chiral metamaterials [PDF]

, 2009
We employ a homogenization technique based on the Lorentz electronic theory to show that planar chiral structures (PCSs) can be described by an effective dielectric tensor similar to that of biaxial elliptically dichroic crystals. Such a crystal is shown
Andrey V. Novitsky, Borzdov, Decker, Drezet, Fedotov, Fedotov, Fedotov, Kuwata-Gonokami, Lyons, Papakostas, Plum, Plum, Plum, Plum, Plum, Reichelt, Rockstuhl, Sergei V. Zhukovsky, Shalaev, Shalaev, Spielman, Vladimir M. Galynsky, Zhukovsky   +22 more
core   +3 more sources