High-resolution flexible iontronic skins for both negative and positive pressure measurement in room temperature wind tunnel applications

Wang，Jingxiao1,2; Wei，Xueyong1,3; Shi，Junli2; Bai，Ningning2; Wan，Xiao1; Li，Bing1; Chen，Yingchun4; Jiang，Zhuangde1; Guo，Chuan Fei2

2024-12-01

10.1038/s41467-024-51415-5

Nature Communications   影响因子和分区

2041-1723

Flexible skins that can be laminated on curved surfaces are a desired form for wind pressure measurement. Sensors for such applications need to detect both negative and positive wind pressure with ultrahigh pressure resolution over a wide range up to 600 kPa, whereas existing flexible sensors are unsatisfactory to such demands. Here, we report a flexible skin containing two iontronic pressure sensors for negative pressure and positive pressure sensing, respectively, and show the potential of the skin for pressure measurement in room temperature wind tunnels. We control the contact state of iontronic interface of a sensor to introduce a pre-pressure that enables negative pressure sensing, exhibiting a pressure resolution of −20 Pa (0.025%) within a broad pressure regime (from −100 kPa to −10 Pa). The other sensor for positive pressure sensing exhibits a pressure-resolution of 100 Pa (0.025%) over 600 kPa, in addition to a wide frequency bandwidth up to 400 Hz. The skin with the two types of sensors can be attached on curved surfaces of wing surface for pressure measurement at various free stream velocities and angles of attack. This study provides a promising technology of using flexible skins for pressure measurement in aviation applications.

SCI

英语

其他

2-s2.0-85201379585

Scopus

1.State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an,710049,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.School of Instrument Science and Technology,Xi’an Jiaotong University,Xi’an,710049,China
4.Science and Technology Committee,Commercial Aircraft Corporation of China Ltd.,Shanghai,200126,China

Wang，Jingxiao,Wei，Xueyong,Shi，Junli,et al. High-resolution flexible iontronic skins for both negative and positive pressure measurement in room temperature wind tunnel applications[J]. Nature Communications,2024,15(1).

Wang，Jingxiao.,Wei，Xueyong.,Shi，Junli.,Bai，Ningning.,Wan，Xiao.,...&Guo，Chuan Fei.(2024).High-resolution flexible iontronic skins for both negative and positive pressure measurement in room temperature wind tunnel applications.Nature Communications,15(1).

Wang，Jingxiao,et al."High-resolution flexible iontronic skins for both negative and positive pressure measurement in room temperature wind tunnel applications".Nature Communications 15.1(2024).