scholarly journals Broad Bandwidth, Self‐Powered Acoustic Sensor Created by Dynamic Near‐Field Electrospinning of Suspended, Transparent Piezoelectric Nanofiber Mesh

Small ◽  
2020 ◽  
Vol 16 (28) ◽  
pp. 2000581 ◽  
Author(s):  
Wenyu Wang ◽  
Patrick N. Stipp ◽  
Karim Ouaras ◽  
Saeed Fathi ◽  
Yan Yan Shery Huang
Keyword(s):  
Near Field ◽  
Acoustic Sensor ◽  
Broad Bandwidth ◽  
Self Powered ◽  
Nanofiber Mesh

Interface Engineering To Boost Photoresponse Performance of Self-Powered, Broad-Bandwidth PEDOT:PSS/Si Heterojunction Photodetector

2016 ◽  
Vol 8 (29) ◽  
pp. 19158-19167 ◽  
Author(s):  
Zhimin Liang ◽  
Pingyang Zeng ◽  
Pengyi Liu ◽  
Chuanxi Zhao ◽  
Weiguang Xie ◽  
...  
Keyword(s):  
Interface Engineering ◽  
Broad Bandwidth ◽  
Self Powered

scholarly journals Biofuel-powered soft electronic skin with multiplexed and wireless sensing for human-machine interfaces

2020 ◽  
Vol 5 (41) ◽  
pp. eaaz7946 ◽  
Author(s):  
You Yu ◽  
Joanna Nassar ◽  
Changhao Xu ◽  
Jihong Min ◽  
Yiran Yang ◽  
...  
Keyword(s):  
Human Body ◽  
Power Efficiency ◽  
Near Field ◽  
Three Dimensional ◽  
Biofuel Cells ◽  
Physical Parameters ◽  
Power Intensity ◽  
Electronic Skin ◽  
Self Powered ◽  
Body Self

Existing electronic skin (e-skin) sensing platforms are equipped to monitor physical parameters using power from batteries or near-field communication. For e-skins to be applied in the next generation of robotics and medical devices, they must operate wirelessly and be self-powered. However, despite recent efforts to harvest energy from the human body, self-powered e-skin with the ability to perform biosensing with Bluetooth communication are limited because of the lack of a continuous energy source and limited power efficiency. Here, we report a flexible and fully perspiration-powered integrated electronic skin (PPES) for multiplexed metabolic sensing in situ. The battery-free e-skin contains multimodal sensors and highly efficient lactate biofuel cells that use a unique integration of zero- to three-dimensional nanomaterials to achieve high power intensity and long-term stability. The PPES delivered a record-breaking power density of 3.5 milliwatt·centimeter−2 for biofuel cells in untreated human body fluids (human sweat) and displayed a very stable performance during a 60-hour continuous operation. It selectively monitored key metabolic analytes (e.g., urea, NH4+, glucose, and pH) and the skin temperature during prolonged physical activities and wirelessly transmitted the data to the user interface using Bluetooth. The PPES was also able to monitor muscle contraction and work as a human-machine interface for human-prosthesis walking.

Measurement of fluid properties with a near-field acoustic sensor

1999 ◽  
Vol 75 (2) ◽  
pp. 295-297 ◽  
Author(s):  
R. Patois ◽  
P. Vairac ◽  
B. Cretin
Keyword(s):  
Near Field ◽  
Acoustic Sensor ◽  
Fluid Properties
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