Kim, HY Karahalios, T Qiu, T Chun, JH 2024-01-21T06:09:58Z 2024-01-21T06:09:58Z 2021-09-04 2004-10-29 0924-4247 https://pubs.kist.re.kr/handle/201004/137124 A microsensor has been developed to measure the spreading of molten metal microdrops upon impact with a solid surface with a time resolution below 1 mus. The sensor consists of fine conducting lines made of a gold (An) and titanium (Ti) two-layered structure on an insulating surface. The spreading of molten metal on the sensor leads to a resistance drop, which is converted to diameter evolution. Its measurements are made with a digital oscilloscope, which is much faster than state-of-the-art visualization systems. This work demonstrates the ultrafast sensing capability with a molten tin (Sn) microdrop. The sensor is especially useful for measuring the rapid expansion of the contact area in the very early stages of impact, which determines the degree of splashing. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA LIQUID-DROP IMPACT SOLID-SURFACE SOLIDIFICATION COLLISION MODEL Microsensor for impact of molten metal microdrops Article 10.1016/j.sna.2004.05.022 1 SENSORS AND ACTUATORS A-PHYSICAL, v.116, no.3, pp.417 - 423 SENSORS AND ACTUATORS A-PHYSICAL 116 3 417 423 scie scopus 000224238900008 2-s2.0-4544369747 Engineering, Electrical & Electronic Instruments & Instrumentation Engineering Instruments & Instrumentation Article LIQUID-DROP IMPACT SOLID-SURFACE SOLIDIFICATION COLLISION MODEL microsensor microdrop drop impact