Lee, Hye Jin Yang, U. Leong Kim, Kyeong Nam Park, Soojin Kil, Kye Hyoung Kim, Jun Soo Wodtke, Alec M. Choi, Won Jun Kim, Myung Hwa Baik, Jeong Min 2024-01-19T19:34:02Z 2024-01-19T19:34:02Z 2021-09-02 2019-07 1530-6984 https://pubs.kist.re.kr/handle/201004/119818 The remarkable electronic and mechanical properties of nanowires have great potential for fascinating applications; however, the difficulties of assembling ordered arrays of aligned nanowires over large areas prevent their integration into many practical devices. In this paper, we show that aligned VO2 nanowires form spontaneously after heating a thin V2O5 film on a grooved SiO2 surface. Nanowires grow after complete dewetting of the film, after which there is the formation of supercooled nanodroplets and subsequent Ostwald ripening and coalescence. We investigate the growth mechanism using molecular dynamics simulations of spherical Lennard-Jones particles, and the simulations help explain how the grooved surface produces aligned nanowires. Using this simple synthesis approach, we produce self-aligned, millimeter-long nanowire arrays with uniform metal-insulator transition properties; after their transfer to a polymer substrate, the nanowires act as a highly sensitive array of strain sensors with a very fast response time of several tens of milliseconds. English AMER CHEMICAL SOC CHEMICAL-VAPOR-DEPOSITION ZNO NANOWIRES PHASE-TRANSITION QUANTUM WIRES VO2 NANOBEAM GAS SENSORS STRAIN PRESSURE GROWTH TRANSPARENT Directional Ostwald Ripening for Producing Aligned Arrays of Nanowires Article 10.1021/acs.nanolett.9b00684 1 NANO LETTERS, v.19, no.7, pp.4306 - 4313 NANO LETTERS 19 7 4306 4313 scie scopus 000475533900012 2-s2.0-85069330356 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article CHEMICAL-VAPOR-DEPOSITION ZNO NANOWIRES PHASE-TRANSITION QUANTUM WIRES VO2 NANOBEAM GAS SENSORS STRAIN PRESSURE GROWTH TRANSPARENT VO2 nanowires directional Ostwald ripening self-aligned Lennard-Jones potential strain sensors