{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:19:31Z","timestamp":1760059171552,"version":"build-2065373602"},"reference-count":47,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T00:00:00Z","timestamp":1748304000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["52175555","51821003","20210302123074","2023-SYSJJ-03"],"award-info":[{"award-number":["52175555","51821003","20210302123074","2023-SYSJJ-03"]}]},{"name":"Fund for the Innovation community","award":["52175555","51821003","20210302123074","2023-SYSJJ-03"],"award-info":[{"award-number":["52175555","51821003","20210302123074","2023-SYSJJ-03"]}]},{"name":"Fundamental Research Program of Shanxi Province","award":["52175555","51821003","20210302123074","2023-SYSJJ-03"],"award-info":[{"award-number":["52175555","51821003","20210302123074","2023-SYSJJ-03"]}]},{"name":"Foundation of State Key Laboratory of Dynamic Measurement Technology, North University of China","award":["52175555","51821003","20210302123074","2023-SYSJJ-03"],"award-info":[{"award-number":["52175555","51821003","20210302123074","2023-SYSJJ-03"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Micromachines"],"abstract":"<jats:p>In this study, a composite substrate with adjustable dielectric properties was prepared, and its promising application in wearable medical device antennas was demonstrated. 3-Methacryloxypropyltrimethoxysilane (KH570) was used to modify titanium dioxide (TiO2) nano-powder, and the modified powder was blended with a mixture of polydimethylsiloxane (PDMS) and polytetrafluoroethylene (PTFE) under the action of anhydrous ethanol. The resulting polymer material had the advantages of hydrophobicity, softness, low loss, and a high dielectric constant. Meanwhile, the effects of the KH570 mass fraction on the microstructure and dielectric properties of TiO2-PTFE-PDMS composites were investigated, and the results showed that when the mass fraction was 5%, the composites exhibited better dielectric properties in the range of 2\u201312 GHz. Finally, an ultra-wideband antenna with an operating frequency band in the range of 2.37\u201311.66 GHz was prepared based on this composite substrate. The antenna demonstrated significant potential for future applications in detecting environmental thermal changes due to its special temperature-sensitive linear frequency shift characteristics, and its effect on the human body under bending conditions was studied. In addition, specific absorption rate (SAR) measurements were performed to assess the effects of antenna radiation on the human body in practical applications.<\/jats:p>","DOI":"10.3390\/mi16060629","type":"journal-article","created":{"date-parts":[[2025,5,28]],"date-time":"2025-05-28T12:28:42Z","timestamp":1748435322000},"page":"629","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ultra-Broadband Wearable Antenna with Thermal Sensitivity Based on Surface-Modified TiO2-PTFE-PDMS Nanocomposites"],"prefix":"10.3390","volume":"16","author":[{"given":"Baoli","family":"Mi","sequence":"first","affiliation":[{"name":"State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North University of China, Taiyuan 030051, China"},{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingya","family":"Meng","sequence":"additional","affiliation":[{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junping","family":"Duan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North University of China, Taiyuan 030051, China"},{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bowen","family":"Su","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North University of China, Taiyuan 030051, China"},{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ma","family":"Jian","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North University of China, Taiyuan 030051, China"},{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yangyi","family":"Shi","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North University of China, Taiyuan 030051, China"},{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6369-153X","authenticated-orcid":false,"given":"Binzhen","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument, North University of China, Taiyuan 030051, China"},{"name":"School of Instrument and Electronics, North University of China, Taiyuan 030051, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Mohamadzade, B., Hashmi, R.M., Simorangkir, R.B.V.B., Gharaei, R., Ur Rehman, S., and Abbasi, Q.H. 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