A path to new nanofluidic devices applying spintronics technology

Phys.org  July 2, 2020 Hydrodynamic motion can generate a flux of electron-spin’s angular momentum via the coupling between fluid rotation and electron spins resulting in spin hydrodynamic generation (SHDG). Researchers in Japan have demonstrated electric voltage generation due to the SHDG in a laminar flow of a liquid-metal mercury. They experimentally confirmed that in the laminar flow region, energy conversion efficiency was increased by approximately 100,000 times. The technique has applications in spintronics-based nanofluidic devices such as liquid metal flow, cooling mechanisms in fast breeder reactors or semiconductor devices, as well as application to flowmeters that electrically measure micro-flows…read more. […]

Sliding walls – a new paradigm for microfluidic devices

Nanowerk  April 9, 2020 Currently, fluidic control in microdevices is mainly achieved either by external pumps and valves, which are expensive and bulky, or by valves integrated in the chip. Researchers in France propose a new paradigm for actuation in microfluidic devices based on rigid or semi-rigid walls with transversal dimensions of hundreds of micrometres that can slide within a microfluidic chip and to intersect microchannels with hand-driven or translation stage-based actuation. The new concept for reconfigurable microfluidics, the implementation of a wide range of functionalities was facilitated and allowed for no or limited dead volume, low cost and low […]