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The Hopfield model describes a neural network that stores memories using all-to-all-coupled spins. Memory patterns are recalled under equilibrium dynamics. Storing too many patterns breaks the associative recall process because frustration…

Many dense magnetic nanoparticle systems exhibit slow dynamics which is qualitatively indistinguishable from that observed in atomic spin glasses and its origin is attributed to dipole interactions among particle moments (or superspins).…

Disordered Systems and Neural Networks · Physics 2009-11-10 M. Sasaki , P. E. Jönsson , H. Takayama , H. Mamiya

A computational approach for predictive simulations of the nanoscale morphology in the early steps of the formation of the interface between metals and organic molecular semiconductors is presented. Despite the relevance of the…

Materials Science · Physics 2020-01-22 Francesco Mercuri

We report an easy and broadly applicable method for the controlled self-assembly of atomically precise Au32(nBu3P)12Cl8 nanoclusters into micro-crystals. This enables the determination of emergent optoelectronic properties resulting from…

We report on the fabrication and current-voltage (IV) characteristics of very narrow, strip-like arrays of metal nanoparticles. The arrays were formed from gold nanocrystals self-assembled between in-plane electrodes. Local cross-linking of…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Klara Elteto , Xiao-Min Lin , Heinrich M. Jaeger

The technology problems of fabricating different, nanometers sized gold particles in the layered composites like light-sensitive chalcogenide glass/gold nanoparticles/transparent substrate or titanium/titanium oxide/gold nanoparticles were…

Materials Science · Physics 2014-01-10 Sandor Kokenyesi , Sandor Biri , Csaba Hegedus , Stepan Charnovich , Attila Csik

A scanning tunneling microscope (STM) supplemented with a force sensor is used to study the mechanical properties of a novel metallic nanostructure: a freely suspended chain of single gold atoms. We find that the bond strength of the…

Condensed Matter · Physics 2009-11-07 G. Rubio-Bollinger , S. R. Bahn , N. Agrait , K. W. Jacobsen , S. Vieira

We have observed nanopattern formation with robust and controllable spatial ordering by laser-induced dewetting in nanoscopic metal films. Pattern evolution in Co film of thickness 1\leq h\leq8 nm on SiO_{2} was achieved under multiple…

Materials Science · Physics 2009-11-11 Christopher Favazza , Ramki Kalyanaraman , Radhakrishna Sureshkumar

Magnetic skyrmion, a swirling spin texture, in chiral magnets is characterized by (i) nano-scale size ($\sim$1nm -- 100nm), (ii) topological stability, and (iii) gyro-dynamics. These features are shown to be advantageous for (a)…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 W. Koshibae , Y. Kaneko , J. Iwasaki , M. Kawasaki , Y. Tokura , N. Nagaosa

Self-organized collective behaviour of active units is inspiring new designs of artificial swarms of micron-sized objects. However, active control at the nanoscale remains elusive. We have accurately solved the collective optofluidic…

Mesoscale and Nanoscale Physics · Physics 2018-12-26 R. Delgado-Buscalioni , M. Meléndez , J. Luis-Hita , M. I. Marqués , J. J. Sáenz

Highly efficient and widely applicable working mechanisms that allow nanomaterials and devices to respond to external stimuli with controlled mechanical motions could make far-reaching impact to reconfigurable, adaptive, and robotic…

Applied Physics · Physics 2018-05-16 Zexi Liang , Donglei , Fan

Memory effects in amorphous materials have been widely studied because of their possible widespread future applications. We show here that ultrastable glasses can exhibit a transient reversible memory effect when subjected to both a local…

Soft Condensed Matter · Physics 2025-05-15 Rashmi Priya , Smarajit Karmakar

Here we demonstrate a novel smart magnetoplasmonic heterostructure for efficient control of light. It consists of gold nanoparticles embedded in a thin magnetic film covered with a gold layer pierces with periodic nanoslit array. Unique…

We consider classical dynamics of a 1D system of $N$ particles bouncing on an oscillating mirror in the presence of gravitational field. The particles behave like hard balls and they are resonantly driven by the mirror. We identify the…

Quantum Gases · Physics 2022-09-08 Weronika Golletz , Andrzej Czarnecki , Krzysztof Sacha , Arkadiusz Kuros

Classical autoassociative memory models have been central to understanding emergent computations in recurrent neural circuits across diverse biological contexts. However, they typically neglect neuromodulatory agents that are known to…

Neurons and Cognition · Quantitative Biology 2025-12-17 Daiki Goto , Hector Manuel Lopez Rios , Monika Scholz , Suriyanarayanan Vaikuntanathan

Without a periodic reference framework, local structures in noncrystalline solids are difficult to specify, but they still exert an enormous influence on materials properties. For example, thermomechanical responses of organic and inorganic…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Yang Lu , I-Wei Chen

Neuromorphic computing systems may be the future of computing and cluster-based networks are a promising architecture for the realization of these systems. The creation and dissolution of synapses between the clusters are of great…

Atomic and Molecular Clusters · Physics 2023-09-06 Wenkai Wu , Theodoros Pavloudis , Alexey V. Verkhovtsev , Andrey V. Solov'yov , Richard E. Palmer

Gold nanostructures have important applications in nanoelectronics, nano-optics as well as in precision metrology due to their intriguing opto-electronic properties. These properties are governed by the bulk band structure but to some…

Periodic assemblies of nanoparticles are central to surface patterning, with applications in biosensing, energy conversion, and nanofabrication. Evaporation of colloidal droplets on substrates provides a simple yet effective route to…

Soft Condensed Matter · Physics 2026-01-29 Suman Bhattacharjee , Sanjoy Khawas , Sunita Srivastava

Selective spatial control of chemical reactions at the level of individual nanostructures remains a significant challenge. We introduce a light-activated system that combines plasmonic gold nanorods with a poly(N-isopropylacrylamide)…