ORCID Profile
0000-0003-1546-8864
Current Organisation
University of Tokyo
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 14-08-2020
Abstract: A thin, soft nanomesh strain gauge enables natural skin motion monitoring with minimum mechanical constraints.
Publisher: Springer Science and Business Media LLC
Date: 08-03-2021
DOI: 10.1038/S41427-020-00267-8
Abstract: Electrospun nanofibers have received considerable attention in the field of soft electronics owing to their promising advantages and superior properties in flexibility and/or stretchability, conductivity, and transparency furthermore, their one-dimensional nanostructure, high surface area, and erse fibrous morphologies are also desirable. Herein, we provide an overview of electrospun nanofiber-based soft electronics. A brief introduction of the unique structure and properties of electrospun nanofiber materials is provided, and assembly strategies for flexible/stretchable electronics are highlighted. We then summarize the latest progress in the design and fabrication of representative flexible/stretchable electronic devices utilizing electrospun nanofibers, such as flexible/stretchable conductors, sensors, energy harvesting and storage devices, and transistors. Finally, a conclusion and several future research directions for electrospun nanofiber-based soft electronics are proposed.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 20-05-2022
Abstract: Long-term high-fidelity electroencephalogram (EEG) recordings are critical for clinical and brain science applications. Conductive liquid-like or solid-like wet interface materials have been conventionally used as reliable interfaces for EEG recording. However, because of their simplex liquid or solid phase, electrodes with them as interfaces confront inadequate dynamic adaptability to hairy scalp, which makes it challenging to maintain stable and efficient contact of electrodes with scalp for long-term EEG recording. Here, we develop an on-skin paintable conductive biogel that shows temperature-controlled reversible fluid-gel transition to address the abovementioned limitation. This phase transition endows the biogel with unique on-skin paintability and in situ gelatinization, establishing conformal contact and dynamic compliance of electrodes with hairy scalp. The biogel is demonstrated as an efficient interface for long-term high-quality EEG recording over several days and for the high-performance capture and classification of evoked potentials. The paintable biogel offers a biocompatible and long-term reliable interface for EEG-based systems.
Publisher: Proceedings of the National Academy of Sciences
Date: 13-09-2021
Abstract: We have succeeded in fabricating a highly robust, adhesive, gas-permeable free-standing polymeric nanofilm with a thickness of less than 100 nm. A gas-permeable dry electrode comprising of a nanofilm and an Au layer can adhere to the human skin by van der Waals forces alone for 1 wk for high-fidelity electrocardiogram recording. Our method has overcome the major bottleneck in continuously monitoring biosignals for a long period of time with high precision under daily life conditions, opening up new opportunities in a wide range of applications in fields such as medicine, healthcare, sports, fitness, virtual reality, and entertainment.
Publisher: Proceedings of the National Academy of Sciences
Date: 09-06-2022
Abstract: The functional support and advancement of our body while preserving inherent naturalness is one of the ultimate goals of bioengineering. Skin protection against infectious pathogens is an application that requires common and long-term wear without discomfort or distortion of the skin functions. However, no antimicrobial method has been introduced to prevent cross-infection while preserving intrinsic skin conditions. Here, we propose an antimicrobial skin protection platform copper nanomesh, which prevents cross-infectionmorphology, temperature change rate, and skin humidity. Copper nanomesh exhibited an inactivation rate of 99.99% for Escherichia coli bacteria and influenza virus A within 1 and 10 min, respectively. The thin and porous nanomesh allows for conformal coating on the fingertips, without significant interference with the rate of skin temperature change and humidity. Efficient cross-infection prevention and thermal transfer of copper nanomesh were demonstrated using direct on-hand experiments.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 20-11-2020
Abstract: Measuring the force it takes for a hand to grasp an object requires sensors to be placed on the fingertips, but these sensors will interfere with or affect how much force ends up being applied. Lee et al. developed a nanomesh sensor built from a series of electrospun materials (see the Perspective by Liu). Using a robotic tester, they show that this device can repeatably detect the pressure involved in gripping an object. They also show that the sensors can be attached to human fingers and that this does not affect the force used to grasp an object. Science , this issue p. 966 see also p. 910
Publisher: American Chemical Society (ACS)
Date: 11-2020
Publisher: Springer Science and Business Media LLC
Date: 21-11-2022
Publisher: American Association for the Advancement of Science (AAAS)
Date: 08-09-2023
No related grants have been discovered for Tomoyuki Yokota.