인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Cardiovascular implantable electronic devices (CIEDs) face dual challenges of high-frequency electromagnetic interference and functional integration. This work reports a multifunctional material constructed via a double-network ionic hydrogel strategy, enabling the integrated realization of efficient electromagnetic shielding and self-powered physiological monitoring. An interpenetrating network skeleton is formed through physical crosslinking of sodium alginate (SA) with Ca<sup>2</sup>⁺ and in situ polymerization of acrylamide (AM). By regulating the specific coordination of ions to induce directional channels and synergistically regulating salt concentration with hydration, an absorption-dominated shielding mechanism centered on ion polarization-interface relaxation is established. The optimized h-CA-PAM-Li⁺-1.0 hydrogel exhibits an electromagnetic interference (EMI) shielding effectiveness (SE<sub>T</sub>) of 63.75 dB in the X-band, with absorption loss accounting for over 93%. Leveraging the excellent ionic conductivity of the hydrogel, a self-powered sensor encapsulated in PDMS films and integrated with wireless modules is fabricated, capable of real-time capture of physiological signals such as heartbeat while maintaining high sensitivity and anti-interference capability in dynamic environments. Free of traditional conductive fillers, this material combines biocompatibility, low cost, and designability, providing a material-device-system integrated solution for electromagnetic protection and intelligent monitoring of implantable electronic devices and opening a new research paradigm for multifunctional shielding materials.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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