2020
DOI: 10.1103/physrevx.10.021050
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Machine-Learning-Optimized Aperiodic Superlattice Minimizes Coherent Phonon Heat Conduction

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Cited by 101 publications
(88 citation statements)
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“…Due to the large computational cost, the phonon NEGF has been often applied for ballistic heat transport through relatively simple structures like lowdimensional nanostructures (ultrathin nanowire [42,46,47], nanotubes [45,48], molecular junctions [49], 2D structures [50][51][52], etc. ), interfaces [53][54][55][56][57][58], and SLs [17,[59][60][61]. Very few works [43,44,[62][63][64][65][66] directly take into account the anharmonic phonon-phonon scattering, yet often consider few-atom systems like the atomic chain or junction [43,44,62,63], and single-unit-cell interface [66].…”
Section: Introductionmentioning
confidence: 99%
“…Due to the large computational cost, the phonon NEGF has been often applied for ballistic heat transport through relatively simple structures like lowdimensional nanostructures (ultrathin nanowire [42,46,47], nanotubes [45,48], molecular junctions [49], 2D structures [50][51][52], etc. ), interfaces [53][54][55][56][57][58], and SLs [17,[59][60][61]. Very few works [43,44,[62][63][64][65][66] directly take into account the anharmonic phonon-phonon scattering, yet often consider few-atom systems like the atomic chain or junction [43,44,62,63], and single-unit-cell interface [66].…”
Section: Introductionmentioning
confidence: 99%
“…Some recent works about using these two kinds of phononic crystals and their comparison were reported ( Sledzinska et al., 2020 ; Hussein et al., 2020 ). Besides the Bragg-type crystal and locally resonant crystal, recently, aperiodic superlattices or random multilayer structures were also found effective systems for tuning the wave nature of phonons ( Chakraborty et al, 2020 ; Hu et al, 2020 ). For example, thermal conductivity can be significantly reduced in GaAs/AlAs superlattices with clean interfaces ( Hu et al, 2020 ).…”
Section: Fundamentalmentioning
confidence: 99%
“…Besides the Bragg-type crystal and locally resonant crystal, recently, aperiodic superlattices or random multilayer structures were also found effective systems for tuning the wave nature of phonons ( Chakraborty et al, 2020 ; Hu et al, 2020 ). For example, thermal conductivity can be significantly reduced in GaAs/AlAs superlattices with clean interfaces ( Hu et al, 2020 ). Resorting to machine learning or other optimization methods, some unusual cognitions on structures of superlattices impacting heat transport may arise.…”
Section: Fundamentalmentioning
confidence: 99%
“…Thermal/infrared sensing is more promising in HMI applications since it can be used to sense objects and environments through the infrared light as all objects emit infrared light at anytime and anywhere [ 14 , 15 , 16 , 85 , 86 , 87 , 88 , 89 , 90 ]. Lochbaum et al combined microelectromechanical system (MEMS) and metamaterial perfect emitter to achieve narrowband on-chip infrared emitter for infrared sensing [ 91 ].…”
Section: Metamaterials-enabled Sensingmentioning
confidence: 99%