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Herein, ionotronic thermo\u2010mechano\u2010multimodal response sensors are proposed, which can independently detect changes in temperature and mechanical stimuli without crosstalk. For this purpose, mechanically robust, thermo\u2010responsive ion gels composed of poly(styrene\u2010<jats:italic>ran<\/jats:italic>\u2010<jats:italic>n<\/jats:italic>\u2010butyl methacrylate) (PS\u2010<jats:italic>r<\/jats:italic>\u2010PnBMA, copolymer gelator) and 1\u2010butyl\u20103\u2010methylimidazolium bis(trifluoromethyl sulfonyl)imide ([BMI][TFSI], ionic liquid) are prepared. The optical transmittance change arising from the lower critical solution temperature (LCST) phenomenon between PnBMA and [BMI][TFSI] is exploited to track the external temperature, creating a new concept of the temperature coefficient of transmittance (TCT). The TCT of this system (\u201011.5% \u00b0C<jats:sup>\u20101<\/jats:sup>) is observed to be more sensitive to temperature fluctuations than the conventional metric of temperature coefficient of resistance. The tailoring molecular characteristics of gelators selectively improved the mechanical robustness of the gel, providing an additional application opportunity for strain sensors. This functional sensory platform, which is attached to a robot finger, can successfully detect thermal and mechanical environmental changes through variations in the optical (transmittance) and electrical (resistance) properties of the ion gel, respectively, indicating the high practicality of on\u2010skin multimodal wearable sensors.<\/jats:p>","DOI":"10.1002\/smll.202301868","type":"journal-article","created":{"date-parts":[[2023,5,6]],"date-time":"2023-05-06T04:41:10Z","timestamp":1683348070000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Multimodal Wearable Ionoskins Enabling Independent Recognition of External Stimuli Without Crosstalk"],"prefix":"10.1002","volume":"19","author":[{"given":"Won Young","family":"Choi","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering University of Seoul  Seoul 02504 Republic of 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