Encrypted, one-touch, human-machine interface technology unveils user physiology
Sep 2022, phys.org
"Cryptographic bio-human machine interface," or CB-HMI, uses thin hydrogel-coated chemical sensors to collect and detect particular circulating molecules on the skin through natural perspiration.
via UCLA and Stanford: Shuyu Lin et al, A touch-based multimodal and cryptographic bio-human–machine interface, Proceedings of the National Academy of Sciences (2022). DOI: 10.1073/pnas.2201937119
First electronic skin with a mesh structure for long-term attachment with no discomfort
Oct 2022, phys.org
World's first nanomesh-structured electronic skin device (organic field-effect transistor) that can measure and process bio-signals for a prolonged period.
via Daegu Gyeongbuk Institute of Science and Technology: Gihyeok Gwon et al, An All‐Nanofiber‐Based Substrate‐Less, Extremely Conformal, and Breathable Organic Field Effect Transistor for Biomedical Applications, Advanced Functional Materials (2022). DOI: 10.1002/adfm.202204645
Standalone sweat sensor provides immediate readout
Oct 2022, phys.org
Fully-integrated soft skin patch includes all the essential components that are required for wearable sensors: two integrated batteries, a microcontroller, sensors, the circuit, and a stretchable non-light-emitting display called electrochromic display.
via University of California San Diego: Lu Yin et al, A stretchable epidermal sweat sensing platform with an integrated printed battery and electrochromic display, Nature Electronics (2022). DOI: 10.1038/s41928-022-00843-6
A high-resolution, wearable electrotactile rendering device that virtualizes the sense of touch
Oct 2022, phys.org
Wearable tactile rendering system can mimic the sensation of touch with high spatial resolution and a rapid response rate.
High-frequency alternating stimulation strategy lowering the operating voltage under 30 V allows it to be non-invasive, but also they used a novel super-resolution strategy that can render tactile sensation at locations between physical electrodes, instead of only at the electrode locations.
via City University of Hong Kong and Tencent's Robotics X Laboratory: Weikang Lin et al, Super-resolution wearable electrotactile rendering system, Science Advances (2022). DOI: 10.1126/sciadv.abp8738
Printable circuits that can work on fabric, plastic and even fruit
Oct 2022, phys.org
Method of creating liquid metal circuitry using a desktop laser printer that could place the electronics onto many types of surfaces.
via Department of Biomedical Engineering, Tianjin University, China: Rui Guo et al, Thermal Transfer-Enabled Rapid Printing of Liquid Metal Circuits on Multiple Substrates, ACS Applied Materials & Interfaces (2022). DOI: 10.1021/acsami.2c08743
Skin-like electronics could monitor your health continuously
Nov 2022, phys.org
Wearables became skin at some point.
via Argonne National Laboratory: Shilei Dai et al, Intrinsically stretchable neuromorphic devices for on-body processing of health data with artificial intelligence, Matter (2022). DOI: 10.1016/j.matt.2022.07.016
Researchers eye embroidery as low-cost solution for making wearable electronics
Nov 2022, phys.org
Embroidering power-generating yarns onto fabric has allowed researchers to embed a self-powered, numerical touch-pad and movement sensors into clothing.
via North Carolina State University: Yu Chen et al, Flexible, durable, and washable triboelectric yarn and embroidery for self-powered sensing and human-machine interaction, Nano Energy (2022). DOI: 10.1016/j.nanoen.2022.107929
A self-powered ingestible sensor opens new avenues for gut research
Dec 2022, phys.org
Wearables vs ingestibles:
Battery-free, pill-shaped ingestible biosensing system designed to provide continuous monitoring in the intestinal environment.
via University of California San Diego: Ernesto De la Paz et al, A self-powered ingestible wireless biosensing system for real-time in situ monitoring of gastrointestinal tract metabolites, Nature Communications (2022). DOI: 10.1038/s41467-022-35074-y
Compliant and conductive carbon nanomaterial for on-skin electronics
Nov 2022, phys.org
Carbon nanomaterial called hydrogen-substituted graphdiyne (HsGDY) coupled with a single-crystal copper catalyst provides an inherent softness and flexibility that is ideal for on-skin applications.
via King Abdullah University of Science and Technology: Yichen Cai et al, Graphdiyne-Based Nanofilms for Compliant On-Skin Sensing, ACS Nano (2022). DOI: 10.1021/acsnano.2c06169
