Results 81 to 90 of about 1,171,647 (287)

Optical vortices and vector beams

Photonics Research, 2016
Amplitude, phase and polarization are essential parameters of an optical field. In the past decade, with the enhancement of techniques in manipulating phase and polarization states in complex optical fields, optical vortices and vector beams are investigated in a closely coupled fashion in terms of efficient beam generation and manipulation, stable ...
Xiaocong Yuan, Siyuan Yu, H. Paul Urbach
openaire   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

Advanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu, Xiangwei Guo, Sajid Husain, Maya Ramesh, Pushpendra Gupta, Darrell Schlom, Ramamoorthy Ramesh, Yu‐Tsun Shao   +7 more
wiley   +1 more source

Cassini observations of ion and electron beams at Saturn and their relationship to infrared auroral arcs [PDF]

, 2012
[1] We present Cassini Visual and Infrared Mapping Spectrometer observations of infrared auroral emissions from the noon sector of Saturn's ionosphere revealing multiple intense auroral arcs separated by dark regions poleward of the main oval.
T. Kimura (7025969), Badman, S. V., Kimura, T., Tao, C., Coates, AJ, S. V. Badman, Achilleos, Nick, C. S. Arridge, Melin, H, K.H. Baines (7600877), T. Stallard, Kasahara, S., N. Achilleos, Arridge, C. S., M.K. Dougherty (7598654), Bunce, EJ, Badman, S.V., T.S. Stallard (7600244), H. Melin, C.S. Arridge (7598645), Mitchell, D. G., G. Hospodarsky (7600883), Baines, KH, S.V. Badman (7600679), R.H. Brown (7600880), Badman, SV, Arridge, CS, S. Kasahara, Dougherty, M. K., Brown, RH, Cowley, S. W. H., Dougherty, M.K., Bunce, E. J., K. H. Baines, Arridge, Chris S., S. Kasahara (7600886), Fujimoto, M, Achilleos, N., Baines, K. H., C. Tao, S. W. H. Cowley, Mitchell, DG, H. Melin (7600241), R. H. Brown, D.G. Mitchell (7600691), Achilleos, N, M. Fujimoto (3243669), Hospodarsky, G, G. Hospodarsky, Bunce, E.J., Dougherty, MK, Hospodarsky, G., A. J. Coates, Kasahara, S, Stallard, T, Mitchell, D.G., M. K. Dougherty, Kimura, T, Brown, R.H., E.J. Bunce (7600682), Stallard, T., N. Achilleos (7600235), C. Tao (7600889), Coates, Andrew J., Fujimoto, M., Coates, A. J., Cowley, S.W.H., Tao, C, S.W.H. Cowley (7591226), Melin, H., Brown, R. H., T. Kimura, E. J. Bunce, A.J. Coates (7598648), Baines, K.H., Cowley, SWH, M. Fujimoto, D. G. Mitchell   +77 more
core   +3 more sources

Simulation of the vector beams generated by the polarization modulation of the spatial variant wave-plate

四川大学学报. 自然科学版, 2017
In order to study the generation of the vector beams by using the polarization modulation of the spatial variant wave-plate, the Jones vectors and Jones matrix are used to further discuss the process, in which an arbitrary Laguerre-Gaussian beam can be ...
SHI Cheng-Fang, JING Jian-Li, GuoMinglei
doaj  

Mathematical representation and experimental generation of cylindrical vector beams

, 2011
Cylindrical vector beams are described by the representation formalism of finite electromagnetic beams in free space. This is achieved by factorizing the field vector into a mapping matrix and a Jones-like vector.
LiChunfang, DuanTao, Duan Tao, JinPengcheng   +3 more
core  

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Creation and detection of Vector Bessel Beams [PDF]

, 2016
Bessel beams are optical fields which falls into the category of non-diffracting beams. Vector Bessel beams are vector beams possessing cylindrical symmetry. Cylindrically symmetric beams tend to have a tight focal point during propagation.
Omoefe, Idisi David, Forbes, Andrew
core  

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Electrically Tunable Generation of Vector Beams via Integrated Liquid Crystal Plates and Dielectric Metasurface

IEEE Photonics Journal
The generation and modulation of vector beams typically require mechanical adjustments of optical components, leading to a complex setup and long manipulation times.
Ruisi Wang, Kaishuo Zhang, Jing Wei, Wei Zhao   +3 more
doaj   +1 more source