An acoustic wave is modified by initiating excitation of an acoustic wave from a first location on a substrate to a second location on the substrate and selectively heating the second location of the substrate so as to alter a property of the second location. With such arrangements, the altered property of the second location modifies the acoustic wave to result in a modified acoustic wave that is propagated from the second location to a third location on the substrate. Related apparatus, systems, and methods are also described.
Keywords: acoustic, acoustic waves
International Class: B23K 26/351 (20140101), G01H 9/00 (20060101), B23K 15/00 (20060101), H05B 3/06 (20060101), G01K 11/22 (20060101), B23K 26/50 (20140101), C23C 14/22 (20060101), G10K 11/26 (20060101), C23C 16/48 (20060101), G10K 11/36 (20060101), F24V 30/00 (20180101)