Results 61 to 70 of about 162,417 (293)

Influence of resonant plasmonic nanoparticles on optically accessing the valley degree of freedom in 2D semiconductors

Nature Communications
The valley degree of freedom in atomically thin transition metal dichalcogenides, coupled with valley-contrasting optical selection rules, holds great potential for future electronic and optoelectronic devices.
Tobias Bucher, Zlata Fedorova, Mostafa Abasifard, Rajeshkumar Mupparapu, Matthias J. Wurdack, Emad Najafidehaghani, Ziyang Gan, Heiko Knopf, Antony George, Falk Eilenberger, Thomas Pertsch, Andrey Turchanin, Isabelle Staude   +12 more
doaj   +1 more source

All photons are equal but some photons are more equal than others

New Journal of Physics, 2012
Two photons are said to be identical if they are prepared in the same quantum state. Given the latter, there is a unique way to achieve this. Conversely, there are many different ways of preparing two non-identical photons: they may differ in frequency ...
Falk Töppel, Andrea Aiello, Gerd Leuchs
doaj   +1 more source

Switchable valley filter based on a graphene $p$-$n$ junction in a magnetic field

, 2017
Low-energy excitations in graphene exhibit relativistic properties due to the linear dispersion relation close to the Dirac points in the first Brillouin zone.
Bruder, C., Mele, E. J., Sekera, T., Tiwari, R. P.   +3 more
core   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Nucleon spin polarization in intermediate-energy heavy-ion collisions

Physics Letters B, 2020
Based on a spin-dependent Boltzmann-Uehling-Uhlenbeck transport model with spin-dependent potentials incorporated using the lattice Hamiltonian method, we have studied the global spin polarization perpendicular to the reaction plane as well as the local ...
Yin Xia, Jun Xu
doaj   +1 more source

Probing and manipulating valley coherence of dark excitons in monolayer WSe$_2$

, 2019
Monolayers of semiconducting transition metal dichalcogenides are two-dimensional direct-gap systems which host tightly-bound excitons with an internal degree of freedom corresponding to the valley of the constituting carriers.
Bartos, M., Basko, D. M., Faugeras, C., Kapuściński, P., Kazimierczuk, T., Kossacki, P., Molas, M. R., Nogajewski, K., Oreszczuk, K., Potemski, M., Slobodeniuk, A. O., Taniguchi, T., Watanabe, K.   +12 more
core   +3 more sources

Two‐Dimensional Materials as a Multiproperty Sensing Platform

Advanced Functional Materials, EarlyView.
Various sensing modalities enabled and/or enhanced by two‐dimensional (2D) materials are reviewed. The domains considered for sensing include: 1) optoelectronics, 2) quantum defects, 3) scanning probe microscopy, 4) nanomechanics, and 5) bio‐ and chemosensing.
Dipankar Jana, Shubhrasish Mukherjee, Dmitrii Litvinov, Magdalena Grzeszczyk, Sergey Grebenchuk, Makars Šiškins, Virgil Gavriliuc, Yihang Ouyang, Changyi Chen, Yuxuan Ye, Meng Yiming, Maciej Koperski   +11 more
wiley   +1 more source

Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres

Advanced Functional Materials, EarlyView.
MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel, Alec G. Burnett, Katherine E. Scheiber, Hans D. Robinson   +3 more
wiley   +1 more source

Probing arbitrary polarized photon pairs undergoing double Compton scatterings by a dedicated MC simulator validated with experimental data

European Physical Journal C: Particles and Fields
Quantum correlations in the polarization degree of freedom of the two-photon system have been extensively studied and form our current understanding of the quantum nature of our world.
Mateusz Bała, Wojciech Krzemień, Beatrix C. Hiesmayr, Jakub Baran, Kamil Dulski, Konrad Klimaszewski, Lech Raczyński, Roman Y. Shopa, Wojciech Wiślicki   +8 more
doaj   +1 more source

Strong and robust polarization anisotropy of site- and size-controlled single InGaN/GaN quantum wires

Scientific Reports, 2020
Optical polarization is an indispensable component in photonic applications, the orthogonality of which extends the degree of freedom of information, and strongly polarized and highly efficient small-size emitters are essential for compact polarization ...
Hwan-Seop Yeo, Kwanjae Lee, Young Chul Sim, Seoung-Hwan Park, Yong-Hoon Cho   +4 more
doaj   +1 more source