Results 81 to 90 of about 73,779 (261)

Motion of water monomers reveals a kinetic barrier to ice nucleation on graphene

Nature Communications, 2021
The dynamics of water molecules at interfaces controls natural and artificial processes, but experimental investigations have been challenging. Here the authors investigate water molecules on a graphene surface using helium spin-echo spectroscopy, and ...
Anton Tamtögl, Emanuel Bahn, Marco Sacchi, Jianding Zhu, David J. Ward, Andrew P. Jardine, Stephen J. Jenkins, Peter Fouquet, John Ellis, William Allison   +9 more
doaj   +1 more source

Charge ordering of magnetic monopoles in triangular spin ice patterns

, 2010
Artificial spin ice offers the possibility to investigate a variety of dipolar orderings, spin frustrations and ground states. However, the most fascinating aspect is the realization that magnetic charge order can be established without spin order.
Schumann, A., Sothmann, B., Szary, P., Zabel, H.   +3 more
core   +1 more source

Magnetization reversal in Kagome artificial spin ice studied by first-order reversal curves [PDF]

, 2017
Magnetization reversal of interconnected Kagome artificial spin ice was studied by the first-order reversal curve (FORC) technique based on the magneto-optical Kerr effect and magnetoresistance measurements. The magnetization reversal exhibits a distinct
Lei, N., Liang, J. H., Liu, Kai, Murray, P., Sun, L., Won, C., Wu, Y. Z., Xing, T., Zhou, C.   +8 more
core   +2 more sources

Nanoporous Microelectrodes for Neural Electrophysiology Recordings in Organotypic Culture

Advanced Materials Technologies, EarlyView.
The highly porous microelectrodes have been designed and printed on culture membranes, allowing to record electrophysiological neural activity for rodent brain slices. To keep the biocompatible nanoporous structure, the microelectrodes and insulative layer are fabricated on the bottom of culture membranes with only small connector pads added on the top.
Petro Lutsyk, Debjani Goswami, Stephen Worrall, Stuart D. Greenhill   +3 more
wiley   +1 more source

Emergent snake magnetic domains in canted kagome ice

Physical Review Research, 2020
We study the two-dimensional kagome-ice model derived from a pyrochlore lattice with second- and third-neighbor interactions. The canted moments align along the local 〈111〉 axes of the pyrochlore and respond to both in-plane and out-of-plane external ...
Wen-Han Kao (高文瀚), Gia-Wei Chern, Ying-Jer Kao (高英哲)   +2 more
doaj   +1 more source

Efficient demagnetization protocol for the artificial triangular spin ice

, 2013
In this work we study demagnetization protocols for an artificial spin ice in a triangular geometry. Our results show that a simple hysteresis-like process is very efficient in driving the system to its ground state, even for a relatively strong disorder
Moura-Melo, W. A., Mól, L. A. S., Pereira, A. R., Rodrigues, J. H.   +3 more
core   +1 more source

Direct observation of the ice rule in an artificial kagome spin ice [PDF]

Physical Review B, 2008
Recently, significant interest has emerged in fabricated systems that mimic the behavior of geometrically-frustrated materials. We present the full realization of such an artificial spin ice system on a two-dimensional kagome lattice and demonstrate rigid adherence to the local ice rule by directly counting individual pseudo-spins.
Qi, Yi, Brintlinger, T., Cumings, John
openaire   +2 more sources

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source

Lattice Structures for Bone Replacement: The Intersection of Bone Biomechanics, Lattice Design, and Additive Manufacturing

Advanced Materials Technologies, EarlyView.
This review outlines how understanding bone's biology, hierarchical architecture, and mechanical anisotropy informs the design of lattice structures that replicate bone morphology and mechanical behavior. Additive manufacturing enables the fabrication of orthopedic implants that incorporate such structures using a range of engineering materials ...
Stylianos Kechagias, Maxwell J. Munford, Frederik C.H. Masure, Richard J. van Arkel, Reece N Oosterbeek   +4 more
wiley   +1 more source

Experimental and theoretical evidences for the ice regime in planar artificial spin ices

, 2018
In this work, we explore a kind of geometrical effect in the thermodynamics of artificial spin ices (ASI). In general, such artificial materials are athermal.
Borme, J., Cezar, J. C., de Araujo, C. I. L., Gonçalves, R. S., Loreto, R. P., Nascimento, F. S., Nisoli, C., Pereira, A. R.   +7 more
core   +2 more sources