Impact of Mass and Lattice Difference on Thermal Boundary Conductance
- PDF / 441,605 Bytes
- 8 Pages / 432 x 648 pts Page_size
- 54 Downloads / 189 Views
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ܼܶ ZKLFKLVGHILQHGDVܼܶ ൌ ߪܵ ଶ ܶΤ݇ZKHUH ߪܵܶDQG݇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ܼܶRIWKHUPRHOHFWULFV 7KHUHH[LVWDUHVLVWDQFHWRWKHUPDOFRQGXFWLRQDWWKHLQWHUIDFHZKHQKHDWLVWUDQVSRUWHG DFURVVWKHLQWHUIDFHRIWZRGLIIHUHQWPDWHULDOV7KLVUHVLV
Data Loading...
