材料科学
压力传感器
石墨烯
接口
灵活性(工程)
灵敏度(控制系统)
纳米技术
MXenes公司
光电子学
计算机科学
机械工程
电子工程
计算机硬件
工程类
统计
数学
作者
Debananda Mohapatra,Jeong Eun Byun,Mohd Zahid Ansari,Haekyoung Kim,Taehoon Cheon,Jongmoon Jang,Young‐Rae Cho,Jung Woo Lee,Soo‐Hyun Kim
标识
DOI:10.1002/admt.202301175
摘要
Abstract Pressure sensors with high flexibility and sensitivity face significant challenges in meeting the delicate balance and synergy among suitable active sensing electrode materials, substrates, and their device geometry design. In this contribution, layer‐engineered delaminated Ti‐MXene (DL‐Ti 3 C 2 T x ) is introduced, which has relatively wider interlayer spacing through intercalated large organic molecules and accordion‐like open internal microstructure than the narrower pristine Ti 3 C 2 T x MXene (Ti‐MXene), graphene/carbon nanotube's interlayer spacing suitably fulfill the high sensitivity and flexibility requirement through accessible electronic pathways under the external pressure. Notably, a milder in‐situ ambient condition etching is performed to eliminate the associated safety risks for a flexible personal healthcare monitoring pressure sensor. DL‐Ti 3 C 2 T x MXene‐empowered, flexible pressure sensor demonstrates a broad range of sensitivities up to a very high‐pressure of 20.8 kPa at a sensitivity of 242.3 kPa −1 with a fast response and recovery time (<300 ms). A twofold increase in pressure sensitivity performance of DL‐Ti 3 C 2 T x MXene than that of Ti‐MXene, graphene can be attributed to the engineered wider interlayer distance among the delaminated DL‐Ti 3 C 2 T x MXene layers causing a facile interlayer atomic movements, contacts, and reversible compressibility. The current economical, scalable DL‐Ti 3 C 2 T x MXene flexible pressure sensor can provide future safe personal healthcare artificial intelligence with real‐time tracking ability.
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