000255878 001__ 255878
000255878 005__ 20190619220036.0
000255878 0247_ $$2doi$$a10.1088/1367-2630/aacba1
000255878 037__ $$aARTICLE
000255878 245__ $$aPerforming mathematical operations using high-index acoustic metamaterials
000255878 260__ $$c2018-07-04
000255878 269__ $$a2018-07-04
000255878 336__ $$aJournal Articles
000255878 520__ $$aThe recent breakthrough in metamaterial-based optical computing devices (2014 Science 343 160) has inspired a quest for similar systems in acoustics, performing mathematical operations on sound waves. So far, acoustic analog computing has been demonstrated using thin planar metamaterials, carrying out the operator of choice in Fourier domain. These so-called filtering metasurfaces, however, are always accompanied with additional Fourier transform sub-blocks, enlarging the computing system and preventing its applicability in miniaturized architectures. Here, employing a simple high-index acoustic slab waveguide, we propose a highly compact and potentially integrable acoustic computing system and demonstrate its proper functioning by numerical simulations. The system directly performs mathematical operation in spatial domain and is therefore free of any Fourier bulk lens. Such compact computing system is highly promising for various applications including high throughput image processing, ultrafast equation solving, and real time signal processing.
000255878 6531_ $$aanalog computing
000255878 6531_ $$aacoustics
000255878 6531_ $$aMetamaterials
000255878 700__ $$g277230$$aZangeneh Nejad, Farzad$$0251193
000255878 700__ $$0249696$$aFleury, Romain$$g201483
000255878 773__ $$tNew Journal of Physics$$j20$$q073001
000255878 8560_ $$fromain.fleury@epfl.ch
000255878 8564_ $$uhttps://infoscience.epfl.ch/record/255878/files/Zangeneh-Nejad_2018_New_J._Phys._20_073001.pdf$$zFinal$$s2313030
000255878 909C0 $$xU13119$$pLWE$$mromain.fleury@epfl.ch$$0252597
000255878 909CO $$qGLOBAL_SET$$pSTI$$particle$$ooai:infoscience.epfl.ch:255878
000255878 960__ $$aromain.fleury@epfl.ch
000255878 961__ $$aalain.borel@epfl.ch
000255878 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000255878 980__ $$aARTICLE
000255878 981__ $$aoverwrite