旋涂

Abstract(#br)Since 1990\u003cce:hsp sp=\"0.2\"/\u003es, research and development of microneedles (MNs) for transdermal drug delivery (TDD) have been receiving great attention. Among various kinds of MNs, the dissolvable polymer MNs provide several attractive merits such as biocompatibility, biodegradability, and active and controlled release of drugs. Currently, the widely practiced approaches, i.e. evaporation and centrifugation, suffer from either relatively long processing time or tedious procedure. This project aims to develop and validate a new method, i.e.

Abstract(#br)Carbon nanotubes (CNTs) based flexible films have great potential on the flexible electronics due to their relatively uniform electrical properties in the film and ease of fabrication technology. In this work, CNT/polydimethylsiloxane (PDMS) composite films with various film thickness was fabricated successfully. By introducing a percolation network model, this work reveals theoretically that the observed rapidly drops of conductivity in thin films mainly depends on the change of CNT network morphology during spin coating.

摘要( # br )聚二甲基硅氧烷( PDMS )是微流体、传感器技术等诸多领域中常用的材料。尽管PDMS的用途非常广泛，但仍然需要更简单、重复性更低的PDMS薄膜制备方法。在本工作中我们提出了一种晶圆制备技术，该技术允许多个PDMS铸件在衬底上进行，无需再处理。将聚苯乙烯薄膜旋涂在作为PDMS防粘层的晶片上。在PDMS制备前后对涂层进行了表征，整个加工过程保持不变。进一步，在涂复的圆片上制备的PDMS薄膜与较厚的PDMS基底结合，形成膜器件。该装置被演示为光学压力传感器。

We have developed a technique to create polymer film patterns on substrates with microstructures using an elastomeric polydimethylsiloxane (PDMS) pad, wherein either a continuous or a patterned film on flat PDMS was used for pattern creation. During patterning of the continuous film, a polymer film is first spin coated onto the elastomer pad, and the pad is then brought into contact with the patterned substrate of interest.

目前，各种类型的柔性可伸展应变传感器已被应用于人体运动检测、软机器人、健康监测等智能可穿戴设备的潜在应用。可拉伸应变传感器可通过几种制备方法制作。然而，生产具有理想特性、成本效益和适宜质量消耗的应变传感器仍然具有挑战性。本研究的目的是比较三种方法制备的复合应变传感器：滴注法、丝网印刷法和旋涂法。本研究利用银纳米粒子( AgNPs )和聚二甲基硅氧烷( PDMS )制备了Ag @ PDMS复合应变传感器。采用不同的表征方法对制备的Ag @ PDMS复合应变传感器的电导率、迟滞特性和灵敏度进行了分析，并通过形貌分析对结果进行了验证。基于所得结果，采用滴注法和丝网印刷法制作了性能良好的Ag @ PDMS复合应变传感器。两种方法都制作了电导率相近的Ag @ PDMS复合应变传感器。由于70 %应变测试下观察到的裂纹较少，因此滴注法的迟滞性能最好，灵敏度最高( GF = 10.08 )。总之，采用滴注法制备的Ag @ PDMS复合材料应变传感器表现出良好的性能，具有作为应变传感器的潜力。