当前位置：
X-MOL 学术
›
ACS Appl. Mater. Interfaces
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
A Sandwiched/Cracked Flexible Film for Multithermal Monitoring and Switching Devices
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-09-08 00:00:00 , DOI: 10.1021/acsami.7b05467 Yanlong Tai 1, 2 , Tao Chen 2 , Gilles Lubineau 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-09-08 00:00:00 , DOI: 10.1021/acsami.7b05467 Yanlong Tai 1, 2 , Tao Chen 2 , Gilles Lubineau 1
Affiliation
|
Polydimethylsiloxane (PDMS)-based flexible films have substantiated advantages in various sensing applications. Here, we demonstrate the highly sensitive and programmable thermal-sensing capability (thermal index, B, up to 126 × 103 K) of flexible films with tunable sandwiched microstructures (PDMS/cracked single-walled carbon nanotube (SWCNT) film/PDMS) when a thermal stimulus is applied. We found that this excellent performance results from the following features of the film’s structural and material design: (1) the sandwiched structure allows the film to switch from a three-dimensional to a two-dimensional in-plane deformation and (2) the stiffness of the SWCNT film is decreased by introducing microcracks that make deformation easy and that promote the macroscopic piezoresistive behavior of SWCNT crack islands and the microscopic piezoresistive behavior of SWCNT bundles. The PDMS layer is characterized by a high coefficient of thermal expansion (α = 310 × 10–6 K–1) and low stiffness (∼2 MPa) that allow for greater flexibility and higher temperature sensitivity. We determined the efficacy of our sandwiched, cracked, flexible films in monitoring and switching flexible devices when subjected to various stimuli, including thermal conduction, thermal radiation, and light radiation.
中文翻译：
用于多温度监测和开关设备的夹层/裂纹柔性膜
基于聚二甲基硅氧烷（PDMS）的柔性膜在各种传感应用中具有明显的优势。在这里，我们展示了高度灵敏和可编程的热感应功能（热指数B，高达126×10 3当施加热刺激时，具有可调夹层微结构的柔性膜（PDMS /破裂的单壁碳纳米管（SWCNT）膜/ PDMS）。我们发现，这种优异的性能归因于薄膜结构和材料设计的以下特征：（1）夹层结构使薄膜可从三维平面变形转换为二维平面变形；（2）刚度引入微裂纹可以减少SWCNT膜的变形，这些裂纹易于变形，并促进SWCNT裂纹岛的宏观压阻行为和SWCNT束的微观压阻行为。PDMS层的特点是热膨胀系数高（α= 310×10 –6 K –1）和低刚度（〜2 MPa），可提供更大的柔韧性和更高的温度敏感性。我们确定了夹层，破裂的柔性膜在受到各种刺激（包括热传导，热辐射和光辐射）时在监视和切换柔性设备中的功效。
更新日期：2017-09-08
中文翻译：
用于多温度监测和开关设备的夹层/裂纹柔性膜
基于聚二甲基硅氧烷（PDMS）的柔性膜在各种传感应用中具有明显的优势。在这里，我们展示了高度灵敏和可编程的热感应功能（热指数B，高达126×10 3当施加热刺激时，具有可调夹层微结构的柔性膜（PDMS /破裂的单壁碳纳米管（SWCNT）膜/ PDMS）。我们发现，这种优异的性能归因于薄膜结构和材料设计的以下特征：（1）夹层结构使薄膜可从三维平面变形转换为二维平面变形；（2）刚度引入微裂纹可以减少SWCNT膜的变形，这些裂纹易于变形，并促进SWCNT裂纹岛的宏观压阻行为和SWCNT束的微观压阻行为。PDMS层的特点是热膨胀系数高（α= 310×10 –6 K –1）和低刚度（〜2 MPa），可提供更大的柔韧性和更高的温度敏感性。我们确定了夹层，破裂的柔性膜在受到各种刺激（包括热传导，热辐射和光辐射）时在监视和切换柔性设备中的功效。
京公网安备 11010802027423号