Weiliang Jin
Stanford University
OpticsPhysicsPlanarOrders of magnitude (time)Nonlinear systemThermal conductionScatteringMaterials scienceInversePhotonicsNear and far fieldCondensed matter physicsComputational physicsOptoelectronicsHeat transferWavelengthRadiative transferThermal radiationResonator
53Publications
15H-index
1,219Citations
Publications 49
Newest
#1Weiliang Jin (Stanford University)H-Index: 15
#2Cheng Guo (Stanford University)H-Index: 17
Last. Shanhui Fan (Stanford University)H-Index: 143
view all 4 authors...
Laser cooling of rare-earth doped solids has been demonstrated across a wide range of material platforms, inspiring the development of simple phenomenological models such as the four-level model to elucidate the universal properties of laser cooling under various operating conditions. However, these models usually require the input of full absorption spectra that must be provided experimentally or by additional complicated atomic modeling. In this letter, we propose that a four-level model, when...
#1Chinmay KhandekarH-Index: 9
#2Weiliang JinH-Index: 15
Last. Shanhui FanH-Index: 143
view all 3 authors...
Detection of infrared (IR) photons in a room-temperature IR camera is carried out by a two-dimensional array of microbolometer pixels which exhibit temperature-sensitive resistivity. When IR light coming from the far-field is focused onto this array, microbolometer pixels are heated up in proportion to the temperatures of the far-field objects. The resulting resistivity change of each pixel is measured via on-chip electronic readout circuit followed by analog to digital (A/D) conversion, image p...
#1Yucan Peng (Stanford University)H-Index: 13
#2W B Li (Stanford University)H-Index: 6
Last. Yi Cui (Stanford University)H-Index: 218
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Perspiration evaporation plays an indispensable role in human body heat dissipation. However, conventional textiles show limited perspiration management capability in moderate/profuse perspiration scenarios, i.e. low evaporation ability, ineffective evaporative cooling effect, and resultant human body dehydration and electrolyte disorder. Here, we propose a novel concept of integrated cooling (i-Cool) textile of heat conduction and sweat transportation for personal perspiration management based ...
4 Citations
#1Lingling Fan (Stanford University)H-Index: 6
#2W B Li (Stanford University)H-Index: 6
Last. Shanhui Fan (Stanford University)H-Index: 143
view all 5 authors...
We present a systematic optimization of nighttime thermoelectric power generation system utilizing radiative cooling. We show that an electrical power density >2 W/m2, two orders of magnitude higher than the previously reported experimental result, is achievable using existing technologies. This system combines radiative cooling and thermoelectric power generation and operates at night when solar energy harvesting is unavailable. The thermoelectric power generator (TEG) itself covers less than 1...
10 CitationsSource
#1Sean Molesky (Princeton University)H-Index: 15
#2Pengning Chao (Princeton University)H-Index: 4
Last. Alejandro W. Rodriguez (Princeton University)H-Index: 41
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This paper shows how the conservation of real and reactive power sets limits on the potential of any finite and arbitrary geometry to scatter and absorb propagating waves.
20 CitationsSource
#1Weiliang Jin (Stanford University)H-Index: 15
#2W B Li (Stanford University)H-Index: 6
Last. Shanhui Fan (Stanford University)H-Index: 143
view all 4 authors...
Light can exert forces on objects, promising to propel a meter-scale lightsail to near the speed of light. The key to address many challenges in such an ambition hinges on the nanostructuring of li...
15 CitationsSource
#1Weiliang JinH-Index: 15
#2W B LiH-Index: 6
Last. Shanhui FanH-Index: 143
view all 4 authors...
Light can exert forces on objects, promising to propel a meter-scale lightsail to near the speed of light. The key to address many challenges in such an ambition hinges on the nanostructuring of lightsails to tailor their optical scattering properties. In this letter, we present a first exhaustive study of photonic design of lightsails by applying large-scale optimization techniques to a generic geometry based on stacked photonic crystal layers. The optimization is performed by rigorous coupled-...
2 Citations
#1Sean Molesky (Princeton University)H-Index: 15
#2Prashanth S. Venkataram (Princeton University)H-Index: 6
Last. Alejandro W. Rodriguez (Princeton University)H-Index: 41
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We report bounds on angle-integrated absorption, scattering and far- and near-field radiative emission, capturing both per-volume material limits and geometric effects. We then describe potential extensions of this formalism to a variety of electromagnetic phenomena.
1 CitationsSource
#1Qixin Shen (Duke University)H-Index: 4
#2Weiliang Jin (Princeton University)H-Index: 15
Last. Maiken H. Mikkelsen (Duke University)H-Index: 21
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Plasmonic structures are promising to enhance and control nonlinear optical processes as the subwavelength-scale elements not only increase the local electric field intensities, but also result in relaxed phase matching conditions. This opens the possibility to observe and further manipulate multiple nonlinear optical processes simultaneously, which would be forbidden in bulk crystals due to incompatible phase matching requirements. Here we enhance and control the relative strength between third...
14 CitationsSource
#1Sean Molesky (Princeton University)H-Index: 15
#2Pengning Chao (Princeton University)H-Index: 4
Last. Alejandro W. Rodriguez (Princeton University)H-Index: 41
view all 4 authors...
We present a method based on the scattering \mathbb{T}operator, and conservation of net real and reactive power, to provide physical bounds on any electromagnetic design objective that can be framed as a net radiative emission, scattering or absorption process. Application of this approach to planewave scattering from an arbitrarily shaped, compact body of homogeneous electric susceptibility \chiis found to predictively quantify and differentiate the relative performance of dielectric and ...
16 CitationsSource