Experimental Investigation of the Rapid Fabrication of Micronand Submicron Structures on Polymers Utilizing Ultrasonic Assisted Embossing

verfasst von

Yongyong Zhu, Sebastian Bengsch, Lei Zheng, Yangyang Long, Bernhard Wilhelm Roth, Marc Christopher Wurz, Jens Twiefel, Jörg Wallaschek

Abstract

Small-scale optical components with micron or submicron features have grown in popularity in recent years. High-quality, high-efficient, and cost-effective processing approaches for polymer optics mass production are an urgent need. In this study, ultrasonic vibration will be introduced in embossing. The major advantage is that the required energy can be provided for process times ranging from a few hundred milliseconds to a few seconds, and that the process energy is provided at exactly the required location so that the structures in the surrounding area are not affected. Due to the strong correlation between electrical impedance and the temperature of the material, a novel impedance-based control strategy has been utilized for precisely controlling ultrasonic vibration during the embossing process. The investigation used two types of stamps with grating line widths of 4 µm and 500 nm, respectively. As a result, an embossing time of less than a few seconds was accomplished and a uniform embossed surface with an average fill rate of more than 75% could be achieved.

Organisationseinheit(en)

PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
Institut für Dynamik und Schwingungen
Institut für Mikroproduktionstechnik
Hannoversches Zentrum für Optische Technologien (HOT)

Typ

Artikel

Journal

Polymers

Band

13

ISSN

2073-4360

Publikationsdatum

01.08.2021

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Chemie (insg.), Polymere und Kunststoffe

Elektronische Version(en)

https://doi.org/10.3390/polym13152417 (Zugang: Offen)