期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 19, 页码 22278-22286出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c00904
关键词
directed assembly; microbubble; polyaniline; nanoparticle assembly; laser printing
资金
- US-Israel Binational Science Foundation (BSF) [2016-160]
Micropatterns of conductive polymers are key for various applications in the fields of flexible electronics and sensing. A bottom-up method that allows high-resolution printing without additives is still lacking. Here, such a method is presented based on microprinting by the laser-induced microbubble technique (LIMBT). Continuous micropatterning of polyaniline (PANI) was achieved from a dispersion of the emeraldine base form of PANI (EB-PANI) in n-methyl-2-pyrrolidone (NMP). A focused laser beam is absorbed by the EB-PANI nanoparticles and leads to formation of a microbubble, followed by convection currents, which rapidly pin EB-PANI nanoparticles to the bubble/substrate interface. Micro-Raman spectra confirmed that the printed patterns preserve the molecular structure of EB-PANI. A simple transformation of the printed lines to the conducting emeraldine salt form of PANI (ES-PANI) was achieved by doping with various acid solutions. The hypothesized deposition mechanism was verified, and the resulting structures were characterized by microscopic methods. The microstructures displayed conductivities of 3.8 x 10(-1) S/cm upon HCl doping and 1.5 X 10(-1) S/cm upon H2SO4 doping, on par with state-of-the-art patterning methods. High fidelity control over the width of the printed lines down to similar to 650 nm was accomplished by varying the laser power and microscope stage velocity. This straightforward bottom-up method using lowpower lasers offers an alternative to current microfabrication techniques.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据