Flexible strain sensor enabled by carbon nanofibers can 'read lips'
Nov 2022, phys.org
Flexible strain sensors unobtrusively monitor tiny vibrations of human skin -- "The lip-language recognition system can directly and quickly translate sentences for people with damaged vocal cords."Membrane made from stacking parallel and randomly aligned carbon nanofibers (CNF) that achieves both high sensitivity and wide strain detection range. (The random alignment is the key.)
via Tsinghua University Press: Peng Bi et al, Ultra-sensitive and wide applicable strain sensor enabled by carbon nanofibers with dual alignment for human machine interfaces, Nano Research (2022). DOI: 10.1007/s12274-022-5162-0
Image credit: AI Art - Neofuturistic Beavers in Mandelbub by Caravaggio 1 - 2022
Spray-on smart skin uses AI to rapidly understand hand tasks
Dec 2022, phys.org
Stretchable, electrically sensitive mesh network embedded in polyurethane sprayed onto the back of the hand, comprised of millions of nanowires of silver coated with gold that are in contact with each other to form dynamic electrical pathways. This mesh is electrically active, biocompatible, breathable, and stays on unless rubbed in soap and water. It conforms intimately to the wrinkles and folds of each human finger that wears it. Then a light-weight Bluetooth module can be simply attached to the mesh which can wirelessly transfer the signal changes.As the fingers bend and twist, the nanowires in the mesh get squeezed together and stretched apart, changing the electrical conductivity of the mesh. These changes can be measured and analyzed to tell us precisely how a hand or a finger or a joint is moving,"
via Stanford University: Kyun Kyu Kim et al, A substrate-less nanomesh receptor with meta-learning for rapid hand task recognition, Nature Electronics (2022). DOI: 10.1038/s41928-022-00888-7
Study shows that bioprinted artificial skin can be used in cosmetics and drugs testing
Jan 2023, phys.org
"Skin-like" - Bioengineered artificial skin (for testing safety of drugs and cosmetics)
via University of São Paulo's School of Pharmaceutical Sciences (FCF-USP) in Brazil: Julia de Toledo Bagatin et al, Bioprinted and manual human epidermis production: A compared performance for skin irritation tests, Bioprinting (2022). DOI: 10.1016/j.bprint.2022.e00251
Multi-layered 'space skin' can help future satellites and spacecraft harvest energy
Jan 2023, phys.org
Multifunctional Nanobarrier Structure (MFNS) nanocoatings can reduce the operating temperatures of space-qualified structures from 120 degrees Celsius to 60 degrees Celsius."Our new nano barrier is able to not only provide radiation and thermal protection but also harvest energy for use at a later date."
via University of Surrey: Michal Delkowski et al, Multifunctional Nanostructures with Controllable Band Gap Giving Highly Stable Infrared Emissivity for Smart Thermal Management, ACS Nano (2023). DOI: 10.1021/acsnano.2c09737
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