Um, Doo-Seung Lim, Seongdong Lee, Youngsu Lee, Hochan Kim, Hyung-Jun Yen, Wen-Chun Chueh, Yu-Lun Ko, Hyunhyub 2024-01-20T10:30:34Z 2024-01-20T10:30:34Z 2021-09-04 2014-03 1936-0851 https://pubs.kist.re.kr/handle/201004/127064 Tunable surface morphology in III-V semiconductor nanomembranes provides opportunities to modulate electronic structures and light interactions of semiconductors. Here, we introduce a vacuum-induced wrinkling method for the formation of ordered wrinkles in In GaAs nanomembranes (thickness, 42 nm) on PDMS microwell arrays as a strategy for deterministic and multidirectional wrinkle engineering of semiconductor nanomembranes. In this approach, a vacuum-induced pressure difference between the outer and inner sides of the microwell patterns covered with nanomembranes leads to bulging of the nanomembranes at the predefined microwells, which, in turn, results in stretch-induced wrinkle formation of the nanomembranes between the microwells. The direction and geometry of the nanomembrane wrinkles are well controlled by varying the PDMS modulus, depth, and shape of microwells, and the temperature during the transfer printing of nanomembrane onto heterogeneous substrates. The wrinkling method shown here can be applied to other semiconductor nanomembranes and may create an important platform to realize unconventional electronic devices with tunable electronic properties. English AMER CHEMICAL SOC HIGH-PERFORMANCE ELECTRONICS LIGHT-EMITTING-DIODES THIN-FILMS SILICON GAAS STRAIN OPTOELECTRONICS MECHANICS EMISSION PATTERNS Vacuum-Induced Wrinkle Arrays of InGaAs Semiconductor Nanomembranes on Polydimethylsiloxane Microwell Arrays Article 10.1021/nn500646j 1 ACS NANO, v.8, no.3, pp.3080 - 3087 ACS NANO 8 3 3080 3087 scie scopus 000333539400128 2-s2.0-84896913662 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article HIGH-PERFORMANCE ELECTRONICS LIGHT-EMITTING-DIODES THIN-FILMS SILICON GAAS STRAIN OPTOELECTRONICS MECHANICS EMISSION PATTERNS III-V semiconductor InGaAs nanomembrane vacuum-induced wrinkle PDMS microwell transfer printing