Results 201 to 210 of about 38,577 (260)

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Variable high-contrast all-optical self-switching of femtosecond solitonic pulses in multi-dual-core optical fiber with distributed optical asymmetry. [PDF]

Opt Quantum Electron
Winkowski M, Longobucco M, Chovan J, Pysz D, Buczynski R, Bugár I.   +5 more
europepmc   +1 more source

Thermally Enhanced Dual-Mode Resistive Switching via Interfacial Strain Engineering in SmNiO₃/PMN-PT Heterostructures. [PDF]

Materials (Basel)
Yang J, Du Q.
europepmc   +1 more source

High-entropy enabled two-dimensional ferroelectricity and memristive synapses in van der Waals layered materials. [PDF]

Nat Commun
Sun N, Han X, Li W, Zhang B, Dong X, Lei M, Yang Y, Zhang Y, Huang WH, Pao CW, Hu Z, Xu J, Quhe R, Wang W, Huang K, Yu R, Wu Y, Bi K.   +17 more
europepmc   +1 more source

Temporally Correlated Stochastic Spiking Neural Networks Enabled by 2D Ferroelectric Synapse-Neuron Integration. [PDF]

Adv Sci (Weinh)
Jeon H, Ji UD, Lee S, Bhin G, Park CY, Park JS, Jang B, Lee S.   +7 more
europepmc   +1 more source

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Polarization-switching D/A converter

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005
This paper describes a novel digital-to-analog (D/A) conversion technique, which uses the analog quantity polarization as a D/A conversion medium. It can be implemented by CMOS capacitors or by ferroelectric capacitors, which exhibit strong nonlinearity in charge versus voltage behavior.
Shunming, Sun, Thottam S, Kalkur
openaire   +2 more sources

All-fiber polarization switch

Optics Letters, 2007
We report an all-fiber polarization switch made out of silica-based microstructured fiber suitable for Q-switching all-fiber lasers. Nanosecond high-voltage pulses are used to heat and expand an internal electrode to cause lambda/2-polarization rotation in less than 10 ns for 1.5 microm light.
Harald, Knape, Walter, Margulis
openaire   +2 more sources

Polar Switching in Trialkylbenzene-1,3,5-tricarboxamides

The Journal of Physical Chemistry B, 2012
The hydrogen-bonded hexagonal columnar LC (Col(hd)) phases formed by benzene-1,3,5-tricarboxamide (BTA) derivatives can be aligned uniformly by an electric field and display switching behavior with a high remnant polarization. The polar switching in three symmetrically substituted BTAs with alkyl chains varying in length between 6 and 18 carbon atoms ...
Fitie, C.F.C., Roelofs, W.S.C., Magusin, P.C.M.M., Wübbenhorst, M., Kemerink, M., Sijbesma, R.P.   +5 more
openaire   +3 more sources

Polarization switching in nanoscale ferroelectrics

Ferroelectrics, 2021
The polarization switching kinetics of ferroelectric crystals and the transition between homogeneous and domain switching in the nanoscale ferroelectric films are considered.
E. V. Paramonova, V. S. Bystrov, X. Meng, H. Shen, J. Wang, V. M. Fridkin   +5 more
openaire   +1 more source