Berry Keith R, Roper Donald Keith, Dopp Michelle A, Moore John
Nanocellutions LLC, Fayetteville, Arkansas 72701, United States.
Division of Research and Innovation, University of Arkansas, Fayetteville, Arkansas 72701, United States.
Langmuir. 2024 Jan 9;40(1):439-449. doi: 10.1021/acs.langmuir.3c02700. Epub 2023 Dec 28.
Transfer printing, the relocation of structures assembled on one surface to a different substrate by adjusting adhesive forces at the surface-substrate interface, is widely used to print electronic circuits on biological substrates like human skin and plant leaves. The fidelity of original structures must be preserved to maintain the functionality of transfer-printed circuits. This work developed new biocompatible methods to transfer a nanoscale square lattice of plasmon resonant nanoparticles from a lithographed surface onto leaf and glass substrates. The fidelity of the ordered nanoparticles was preserved across a large area in order to yield, for the first time, an optical surface lattice resonance on glass substrates. To effect the transfer, interfacial adhesion was adjusted by using laser induction of plasmons or unmounted adhesive. Optical and confocal laser scanning microscopy showed that submicron spacing of the square lattice was preserved in ≥90% of transfer-printed areas up to 4 mm. Up to 90% of ordered nanoparticles were transferred, yielding a surface lattice resonance measured by transmission UV-vis spectroscopy.
转印是通过调整表面与基底界面处的粘附力，将在一个表面上组装的结构重新定位到不同的基底上，广泛用于在人体皮肤和植物叶片等生物基底上印刷电子电路。必须保留原始结构的保真度以维持转印电路的功能。这项工作开发了新的生物相容性方法，将等离子体共振纳米颗粒的纳米级方形晶格从光刻表面转移到叶片和玻璃基底上。有序纳米颗粒的保真度在大面积上得以保留，从而首次在玻璃基底上产生光学表面晶格共振。为了实现转移，通过激光诱导等离子体或未安装的粘合剂来调整界面粘附力。光学和共聚焦激光扫描显微镜显示，在高达4毫米的转印区域中，≥90%的区域保留了方形晶格的亚微米间距。高达90%的有序纳米颗粒被转移，通过透射紫外-可见光谱法测量得到表面晶格共振。
