Publications OK SMART LAB

Template-Free Vibrational Indentation Patterning (VIP) of Micro/Nanometer-Scale Grating Structures with Real-Time Pitch and Angle Tunability
Authors
Jong G. Ok, Se Hyun Ahn, Moon Kyu Kwak, Kyu-Tae Lee, Jae Yong Lee, and L. Jay Guo
Journal
Advanced Functional Materials
Vol. (No.), pp.
23 (37), 4739-4744 (Oct 2013)
Year
2014-
A template-free, high-throughput patterning technique named vibrational indentation-driven patterning (VIP), which achieves continuous, period-tunable fabrication of micro/nanometer-scale grating structures, is reported. In VIP, a tilted edge of a hard material vertically vibrating at high frequency makes periodic indentations onto a moving substrate of any material softer than the tool, thereby continuously creating grating patterns at high speed. By modulating the tool vibration frequency, substrate feeding rate, and the tool tilting angle, the period-variable chirped gratings and angle-tunable blazed gratings can be easily achieved; they can be utilized in various optoelectronics and photonics applications. As an example, an infrared polarizer directly fabricated from the VIP-created blazed grating is demonstrated.