PDMS薄膜

Abstract(#br)Microbial contamination on various surfaces is one of the greatest health problems worldwide, afflicting millions of peoples annually. Given the advantages of silver nanowires (AgNWs) in forming a percolated network when fabricated into a film, there is significant interest in developing AgNWs loaded polymeric coatings for antimicrobial applications. In this work, AgNWs with high aspect ratio are drop-coated onto a silicon wafer to form a uniform interconnected network. The AgNW network is then embedded into polydimethylsiloxane (PDMS) matrix to fabricate AgNWs/PDMS film.

Abstract(#br)Physical and chemical properties of the polymer surface play great roles in the output performance of triboelectric nanogenerator (TENG). Specific texture on the surface of polymer can enlarge the contact area and enhance the power output performance of TENG. In this paper, polydimethylsiloxane (PDMS) films with smooth and micro pillar arrays on the surface were prepared respectively. The surfaces were treated by argon plasma before testing their output performance.

To effectively control the critical thickness of a polydimethylsiloxane (PDMS) film and enhance the sensitivity characteristics of the fiber pressure sensor, we propose a new method to optimize the thickness of the PDMS film in a fiber tube. It is characterized by analyzing the relationship between the diffusion rate of the PDMS and its viscosity, and using an oven to solidify the PDMS to a certain extent to accurately control the diffusion rate and diffusion length of the PDMS in the fiber tube.

An electromagnetic microvalve for pneumatic control of microfluidic devices has been designed, fabricated, and tested. The microvalve is composed of two parts: a miniature electromagnetic actuator and a valve body. The electromagnetic actuator consists mainly of a thin polydimethylsiloxane (PDMS)–based elastomer, which acts as the valve diaphragm. The diaphragm, used as a solid hydraulic medium, converts the large contact area of a valve core into a small contact area of valve head while maintaining a large stroking force.

金属纳米颗粒( MeNPs )，如金和银( AuNPs和AgNPs )等，在聚合物基体中的掺入以获得多样化的应用，近年来得到了人们的极大兴趣。然而，一个可行的产生均匀样本的策略仍然具有挑战性。在本工作中，我们提出了一种简单的方法将AuNPs和AgNPs负载在载玻片上的均一聚二甲基硅氧烷( PDMS )薄膜上，命名为[ email   protected ]和[ email   protected ]。使用便携式处理分光光度计监测[电子邮件 保护]和[电子邮件 保护]薄膜的等离子体颜色，采集比色数据，用总色差ΔE表示。从比色数据可以看出，SPR ( Surface Plasmon Resonance )吸收带在530 nm处[电子邮件 保护]和400 nm处[电子邮件 保护]的UV-vis分析依赖于反应时间和温度( 25、33和55℃)，在所有3个考察温度下ΔE数据均与反应时间呈线性关系，这些结果可作为今后制备新样品的工作曲线。本研究有助于我们了解制备均匀、等离子体颜色可调的[电子邮件 保护]薄膜的实验条件。[电子邮件 保护]和[电子邮件 保护]薄膜由于其性能和简单的制作，有望成为等离子体和比色传感器。