Results 101 to 110 of about 233,435 (334)

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

Advanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

Selective Modulation of Fear Memory in Non‐Rapid Eye Movement Sleep

Advanced Science
Sleep stabilizes memories for their consolidation, but how to modify specific fear memory during sleep remains unclear. Here, it is reported that using targeted memory reactivation (TMR) to reactivate prior fear learning experience in non‐slow wave sleep
Qiyu Zheng, Yuhua Huang, Changrui Mu, Xiaoqing Hu, Cora Sau Wan Lai   +4 more
doaj   +1 more source

Short Duration Repetitive Transcranial Electrical Stimulation During Sleep Enhances Declarative Memory of Facts

Frontiers in Human Neuroscience, 2019
Transcranial electrical stimulation (tES) during sleep has been shown to successfully modulate memory consolidation. Here, we tested the effect of short duration repetitive tES (SDR-tES) during a daytime nap on the consolidation of declarative memory of ...
Nicola Cellini, Nicola Cellini, Renee E. Shimizu, Patrick M. Connolly, Diana M. Armstrong, Lexus T. Hernandez, Anthony G. Polakiewicz, Rolando Estrada, Mario Aguilar-Simon, Michael P. Weisend, Sara C. Mednick, Stephen B. Simons   +11 more
doaj   +1 more source

Relationship between wave processes in sunspots and quasi-periodic pulsations in active region flares [PDF]

, 2009
A phenomenological relationship between oscillations in a sunspot and quasi-periodic pulsations (QPP) in flaring energy releases at an active region (AR) above the sunspot is established.
Altyntsev, Bastian, Bogdan, Chen, De Moortel, Denker, Doyle, Erdélyi, Gelfreikh, Grechnev, Grechnev, Inglis, King, Kislyakov, M. Karlicky, Melnikov, Mészárosová, Nakariakov, Nakariakov, Nakariakov, Nindos, Nindos, Ning, R. Sych, S. Anfinogentov, Shibasaki, Sych, V. M. Nakariakov, Van Doorsselaere, Zaitsev, Zaitsev, Zhugzhda   +31 more
core   +3 more sources

Substrate Stress Relaxation Regulates Cell‐Mediated Assembly of Extracellular Matrix

Advanced Functional Materials, EarlyView.
Silicone‐based viscoelastic substrates with tunable stress relaxation reveal how matrix mechanics regulates cellular mechanosensing and cell‐mediated matrix remodelling in the stiff regime. High stress relaxation promotes assembly of fibronectin fibril‐like structures, increased nuclear localization of YAP and formation of β1 integrin‐enriched ...
Jonah L. Voigt, Jens Timmer, Elisabetta Ada Cavalcanti‐Adam   +2 more
wiley   +1 more source

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

Advanced Functional Materials, EarlyView.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato, Haishuo Guan, Bianca M. Carrara, Mira Jacobs, Matteo Monticelli, Lukas Moser, Thomas Moragues, Andrew J. deMello, Tomaso Zambelli, Martin Ehrbar   +9 more
wiley   +1 more source

Local Gamma Activity During Non-REM Sleep in the Context of Sensory Evoked K-Complexes

Frontiers in Neuroscience, 2019
K-complexes (KCs) and Sleep Slow Oscillations (SSOs) are the EEG expression of neuronal bistability during deeper stages Non-REM sleep. They are characterized by a deep negative deflection lasting about half-a-second, sustained, at the cortical level, by
Marco Laurino, Andrea Piarulli, Andrea Piarulli, Danilo Menicucci, Angelo Gemignani, Angelo Gemignani   +5 more
doaj   +1 more source

Inflation without Slow Roll

, 1998
We draw attention to the possibility that inflation (i.e. accelerated expansion) might continue after the end of slow roll, during a period of fast oscillations of the inflaton field \phi . This phenomenon takes place when a mild non-convexity inequality
A. A. Starobinskii, A. Albrecht, A. H. Guth, A. H. Guth, A. Linde, A. Linde, A. Linde, A. Linde, E. W. Kolb, E. Witten, G. Dvali, J. M. Bardeen, L. Kofman, M. S. Turner, S. Dimopoulos, S. W. Hawking, Thibault Damour, V. F. Mukhanov, V. Mukhanov, Viatcheslav F. Mukhanov   +19 more
core   +2 more sources

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Statistical Properties of Single and Competing Non-Linear Fast-Slow Oscillators in Noise [PDF]

, 1993
Statistical properties offast-slow Ellias-Grossberg oscillators are studied in response to deterministic and noisy inputs. Oscillatory responses remain stable in noise due to the slow inhibitory variable, which establishes an adaptation level that ...
Grossberg, Stephen, Grunewald, Alexander
core   +1 more source