ACS Sensors
·
2025
·
IF 9.1
Zihan Zhu,Xiaotian Wang,Dongzi Wang,Yuzhe Gu,Wenqiong Fan,Yuncong Pang,Zhengxin Guo,Yang Li
Conventional biometric methods are limited by poor liveness detection and spoofing resistance, whereas intrinsically unique Electrocardiogram (ECG) signals offer a more secure alternative for biometric authentication. However, the reliable acquisition of high-fidelity ECG signals remains a key challenge in stretchable and wearable electronics due to motion-induced signal degradation and material limitations. Here, we present a material-driven approach based on a stretchable organic electrochemical transistor (OECT) platform integrating percolation-optimized metal/elastomer composite electrodes and shear-aligned anisotropic eutectic gel electrolytes. This design enables robust electrophysiological signal transduction, achieving a high transconductance of 5.63 mS and a signal-to-noise ratio (SNR) of 35.3 dB. Due to the anisotropic stretchability of the hydrogel electrolytes, the device maintains good performance under 30% strain, enabling reliable acquisition of microvolt-scale ECG signals with preserved waveform integrity for accurate biometric identification. When combined with a one-dimensional convolutional neural network (1D-CNN), the system achieves an identification accuracy of 99%, validating its potential for intelligent, wearable authentication. This work offers a scalable and hardware-efficient strategy for next-generation wearable bioelectronics that unify health monitoring and identity verification within a single platform.
研究领域:
可穿戴生物电子学
·
生物医学工程
·
生物识别
·
柔性电子学
·
医疗健康中的神经网络
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Puzhong Gu,Xu Liu,Zhenyu Hu,Zejun Sun,Linlin Lu,Xiao Yang,Guoqing Zu,Jia Huang
Stretchable and recyclable organic electrochemical transistors (OECTs) have emerged as a promising platform for flexible and green electronics. However, stretchable OECTs and OECT-based sensors usually show limited transconductance and sensitivity. Herein, stretchable, recyclable, high-transconductance, and multifunctional OECTs based on nanoporous semiconducting polymer aerogels are developed. The flexible nanoporous structures (pore size ≈ 10–160 nm) effectively facilitate ion penetration/transport and doping of semiconductor, significantly enhancing transconductance of the stretchable OECTs and sensitivity of the OECT-based sensors. The resulting OECT achieves a high transconductance of 27.4 mS and high stretching stability. Notably, both the semiconducting aerogel and substrate are recyclable, achieving the recyclability of the OECTs. It is demonstrated that the stretchable nanoporous aerogel OECTs can be used as platforms for various applications, including ultrasensitive stretchable biosensors for monitoring trace amount of biomarkers in biological fluids, stretchable tactile electronic skins with an ultralow detection limit (0.5 Pa), and artificial synapses for neuromorphic simulation. This work provides a versatile strategy toward stretchable nanoporous semiconducting polymers promising for sustainable, stretchable, and highly sensitive electronics.
研究领域:
材料科学
·
柔性电子学
·
生物传感器
·
神经形态工程
·
聚合物化学
·
可持续电子学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Panpan Hao,Rufeng Zhu,Yang Tao,Wei Jiang,Xue Liu,Yan Tan,Yuedan Wang,Dong Wang
Novel enhancement-mode organic electrochemical transistors (OECTs) have been prepared by poly(3, 4-ethylenedioxythiophene)-poly(styrenesulfonate) de-doped polyethylenimine on the multi-walled carbon nanotube-modified viscose yarn. The fabricated devices exhibit low power consumption with a high transconductance of 6.7 mS, rapid response time < 2 s, and excellent cyclic stability. In addition, the device has washing durability and bending and long-term stability suitable for wearable applications. Biosensors based on enhancement-mode OECTs for the selective detection of adrenaline and uric acid (UA) are developed by using molecularly imprinted polymer (MIP)-functionalized gate electrodes. The detection limits of adrenaline and UA analysis are as low as 1 pM, with the linear ranges of 0.5 pM to 10 μM and 1 pM to 1 mM, respectively. Moreover, the sensor based on enhancement-mode transistors can efficiently amplify the current signals according to the modulation of the gate voltage. The MIP-modified biosensor has high selectivity in the presence of interferents and desirable reproducibility. Additionally, due to the wearable nature of the developed biosensor, this sensing tool has the capability of being integrated with fabrics. Therefore, it has successfully been applied in textiles for the determination of adrenaline and UA in artificial urine samples. The excellent recoveries and rsds are 90.22–109.05% and 3.97–6.94%, respectively. Ultimately, these sensitive, low-power, wearable, and dual-analyte sensors help to develop non-laboratory tools for early disease diagnosis and clinical research.
研究领域:
电化学
·
生物传感
·
可穿戴技术
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）