Near-Field Thermal Radiation between Two Plates with
Sub-10 nm Vacuum Separation
Posted on 2020-07-09 - 18:39
Radiation greatly
exceeding blackbody between two objects separated
by microscale distances has attracted great interest. However, challenges
in reaching such a small separation between two plates have so far
prevented studies below a separation distance of about 25 nm. Here,
we report a study of radiation enhancement in the near-field regime
of less than 10 nm between two parallel plates. We make use of bulk,
rigid plates to approach small separation distances without the adverse
snap-in effect, develop embedded temperature sensors to allow near-zero
separation, and employ advanced sensing method to level the plates
and approach and maintain small separations. Our findings agree with
theoretical predictions between parallel surfaces with separations
down to 7 nm where an 18000 times enhancement in radiation between
two quartz plates is observed. Our method can also be used to explore
heat transfer between other materials and can possibly be extended
to smaller separation gaps.
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Salihoglu, Hakan; Nam, Woongsik; Traverso, Luis; Segovia, Mauricio; Venuthurumilli, Prabhu K.; Liu, Wen; et al. (2020). Near-Field Thermal Radiation between Two Plates with
Sub-10 nm Vacuum Separation. ACS Publications. Collection. https://doi.org/10.1021/acs.nanolett.0c02137
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AUTHORS (9)
HS
Hakan Salihoglu
WN
Woongsik Nam
LT
Luis Traverso
MS
Mauricio Segovia
PV
Prabhu K. Venuthurumilli
WL
Wen Liu
YW
Yu Wei
WL
Wenjuan Li
XX
Xianfan Xu