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“#Physicists achieve tunable spin wave excitation” Magnon excitation. Credit: Daria Sokol/MIPT Physicists from MIPT and the Russian Quantum Center, joined by colleagues from Saratov State University and Michigan Technological University, have demonstrated new methods for controlling spin waves in nanostructured bismuth iron garnet films via short laser pulses. Presented in Nano Letters, the solution has…
“#Nanoearthquakes control spin centers in silicon carbide” Surface acoustic waves (SAW) generated by radio-frequency signals applied to interdigital transducers (IDT) control the spin states of optically active color centers in SiC. The coupling strength depends on the spin projection direction of the color centers, which is controlled by an external magnetic field (B). Credit: A….
“#Nanoscale engines far colder than even deepest outer space” Credit: Shutterstock The theory of thermodynamics, commonly associated with the steam engines of the 19th century, is a universal set of laws that governs everything from black holes to the evolution of life. But with modern technologies miniaturizing circuits to the atomic scale, thermodynamics has to…
“#Nanoparticle-based computing architecture for nanoparticle neural networks” The nanoparticle-based von Neumann architecture (NVNA) on a lipid nanotablet (LNT) chip. (A) Schematic of NVNA-LNT. The LNT is operated with software composed of Instruction DNAs in solution and hardware composed of nanoparticles on a lipid bilayer. The hardware consists of a data storage unit, NM; an output…
“#Trapping tiny particles: A versatile tool for nanomanipulation” Using a metamaterial, the group traps nanoparticles. Credit: Okinawa Institute of Science and Technology At just 1/1000th of a millimeter, nanoparticles are impossible to see with the naked eye. But, despite being small, they’re extremely important in many ways. If scientists want to take a close look…
“#Diamonds shine a light on hidden currents in graphene” A picture of an electrical current in graphene (marked by the red outline) showing a fluid-like flow imaged using a diamond-based quantum sensor. The grey portion is where the metal electrical contacts prevented collection of data. Credit: Walsworth and Yacoby research groups, Harvard and University of…
“#Developing new techniques to improve atomic force microscopy” Chemical signal produced by a 4 nm thick polymer film collected using previous deflection AFM-IR detection, top, compared to the new null-deflection approach. Credit: Beckman Institute for Advanced Science and Technology Researchers at the Beckman Institute for Advanced Science and Technology have developed a new method to…
“#Toward ultra-sensitive diagnostic chips” An illustration of a 3-D metasurface trapping light with extremely strong near-field enhancement at the tips of pillars through dark modes. Credit: Swinburne University of Technology An international team, led by Swinburne researchers, has developed an ultra-thin nanostructure gold film—or metasurface—with the potential to revolutionize next-generation bio-sensing chips. The new metasurface…
“#Melting a crystal topologically” Upper panel: spin configuration of a skyrmion. Lower panel: Voronoi tessellation of representative skyrmion lattice configurations in the solid, the hexatic and the liquid phases respectively. Credit: Huang Ping (Xi’an Jiaotong University) The introduction of topology, a branch of mathematics focusing on the properties of ‘knots,’ into physics has inspired revolutionary…