Research on Carbon nanofiber based E-Tattoo got featured on University Portal and National News Portals
Our latest research on carbon nanofiber based e-tattoo got featured on University portals and different national news portals. Hierarchically interactive 3D-porous soft carbon nanofibers (CNFs) have great potential for wearable bioelectronic interfaces, yet 90% of CNFs are derived from expensive polyacrylonitrile associated with complex production methods. Here, another cost-effective fluoropolymer, poly(1,1-difluoroethylene) (PDFE), is introduced to investigate its transition chemistry and structural evolution over laser-induced carbonization (LIC). The impregnation of Ti3C2Tx-MXene followed by dehydrofluorination is believed to be crucial to enhance the β-phase and reinforce PDFE-based nanofibers. It is explored that the β-phase of the dehydrofluorinated MXene-PDFE nanofibers is converted into an sp2-hybridized hexagonal graphitic structure by cyclization/cross-linking decomposition during LIC. Remarkably, this approach generates laser-induced hierarchical CNFs (LIHCNFs) with a high carbon yield (54.77%), conductivity (sheet resistance = 4 Ω sq−1), and stability over 500 bending/releasing cycles (at 10% bending range). Using LIHCNFs, a skin-compatible breathable and reusable electronic-tattoo is engineered for monitoring long-term biopotentials and human–machine interfaces for operating home electronics. The LIHCNFs-tattoo with high breathability (≈14 mg cm−2 h−1) forms compliant contact with human skin, resulting in low electrode-skin impedance (23.59 kΩ cm2) and low-noise biopotential signals (signal-to-noise ratio, SNR = 41 dB). This finding offers a complementary polymer precursor and carbonization method to produce CNFs with proper structural features and designs for multifunctional biointerfaces.
Featured in Kwangwoon University
National Media Coverages:
https://www.joongang.co.kr/article/25051720#home
http://www.dhnews.co.kr/news/articleView.html?idxno=203429
https://www.edaily.co.kr/news/read?newsId=02830646632235112&mediaCodeNo=257
https://news.nate.com/view/20220228n20118?mid=n0103
http://www.veritas-a.com/news/articleView.html?idxno=407687
