Publications
2024
55. Komron Shayegan*, Jae S. Hwang*, Bo Zhao, Aaswath P. Raman and Harry A. Atwater, “Broadband nonreciprocal thermal emissivity and absorptivity” Light: Science & Applications 13, 176 (2024).
54. Jyotirmoy Mandal, Sagar Mandal, John Brewer, Arvind Ramachandran and Aaswath P. Raman, “Radiative cooling and thermoregulation in the earth’s glow” Cell Reports Physical Science 5, 102065 (2024). Note: ArXiv preprint (2020).
53. Hyeon Ho Kim, Soyul Kwak, Jaewon Lee, Eunji Im, Aaswath P. Raman and Seungwoo Lee, “Structured fluids as colorful paintable radiative coolers” Cell Reports Physical Science 5, 102068 (2024).
52. Jyotirmoy Mandal, John Brewer, Sagar Mandal and Aaswath P. Raman, “Solution-Processed Disordered Plasmonic Surfaces as Optics for Infrared Imaging” Laser & Photonics Reviews 2400256 (2024).
51. Christopher Yeung*, Benjamin Pham*, Zihan Zhang, Katherine T. Fountaine, and Aaswath P. Raman, “Hybrid supervised and reinforcement learning for the design and optimization of nanophotonic structures” Optics Express 32, 9920-9930 (2024).
2023
50. John Brewer, Sachin Kulkarni and Aaswath P. Raman, “Resonant Anti-Reflection Metasurface for Infrared Transmission Optics” Nano Letters, 23, 19, 8940–8946 (2023).
49. Jae Seung Hwang*, Jin Xu* and Aaswath P. Raman, “Simultaneous control of spectral and directional emissivity with gradient epsilon-near-zero InAs photonic structures” Advanced Materials, 35, 39, 2302956 (2023). [Samueli Newsroom]
48. Xin Huang, Christopher Yeung and Aaswath P. Raman, “Temporal Coupled-Mode Theory for Thermal Emission from Multiple Arbitrarily Coupled Resonators” Physical Review Applied, 19, 034037 (2023). [pre-print]
47. Qilong Cheng, Ghim Wei Ho, Aaswath P. Raman, Ronggui Yang and Yuan Yang, “Regulating thermal radiation for energy and sustainability” Next Energy, 1, 2, 100019 (2023).
46. Christopher Yeung, Benjamin Pham, Katherine T. Fountaine and Aaswath P. Raman, “DeepAdjoint: An All-in-One Photonic Inverse Design Framework Integrating Data-Driven Machine Learning with Optimization Algorithms” ACS Photonics, 10, 4, 884–891 (2023). [pre-print][Github repository]
45. Remy Fortin, Jyotirmoy Mandal, Aaswath P. Raman and Salmaan Craig, “Passive radiative cooling to sub-ambient temperatures inside naturally ventilated buildings” Cell Reports Physical Science, 4, 9, 101570 (2023).
44. Qilong Cheng, Sebastian Gomez, Guanzhong Hu, Albatool Abaalkhail, Jazmyn Beasley, Peter Zhang, Yuan Xu, Jyotirmoy Mandal, Aaswath P. Raman, Nanfang Yu and Yuan Yang, “A Zigzag Wall with Asymmetric Emissivity for Radiative Cooling Building Envelope” Engineering Archive (2023).
2022
43. Xin Huang, Jyotirmoy Mandal, Jin Xu and Aaswath P. Raman, “Passive freezing desalination driven by radiative cooling” Joule, 6, 1-14 (2022). [Journal Cover Image][Samueli Newsroom]
42. Eylul Simsek, Jyotirmoy Mandal, Aaswath P. Raman and Laurent Pilon, “Dropwise Condensation Reduces Selectivity of Sky-Facing Radiative Cooling Surfaces” International Journal of Heat and Mass Transfer, 198, 123399 (2022).
41. Christopher Yeung, David Ho, Benjamin Pham, Katherine T. Fountaine, Zihan Zhang, Kara Levy and Aaswath P. Raman, “Enhancing Adjoint Optimization-Based Photonic Inverse Design with Explainable Machine Learning” ACS Photonics, 9, 5, 1577–1585 (2022). [Journal Cover Image]
- Featured on the cover: ACS Photonics
40. Di Han, Jipeng Fei, Jyotirmoy Mandal, Zhixin Liu, Hong Lia, Aaswath P. Raman and Bing Feng Ng, “Sub-ambient radiative cooling under tropical climate using highly reflective polymeric coating” Solar Energy Materials and Solar Cells, 240, 111723 (2022).
39. John Brewer, Matthew F. Campbell, Pawan Kumar, Sachin Kulkarni, Deep Jariwala, Igor Bargatin and Aaswath P. Raman, “Multiscale photonic emissivity engineering for relativistic lightsail thermal regulation” Nano Letters, 22, 2, 594-601 (2022). [preprint][Samueli Newsroom]
38. Matthew F. Campbell, John Brewer, Deep Jariwala, Aaswath P. Raman and Igor Bargatin, “Relativistic lightsails need to billow” Nano Letters, 22, 1, 90-96 (2022). [preprint]
2021
37. Christopher Yeung, Ryan Tsai, Benjamin Pham, Brian King, Yusaku Kawagoe, David Ho, Julia Liang and Aaswath P. Raman, “Global Inverse Design Across Multiple Photonic Structure Classes Using Generative Deep Learning“ Advanced Optical Materials, 9 (20), 2100548 (2021). [preprint][Github repository]
- Featured on the cover: Advanced Optical Materials
36. Jin Xu, Jyotirmoy Mandal and Aaswath P. Raman, “Broadband directional control of thermal emission” Science, 372 (6450), 393-397 (2021). [preprint]
- Highlighted article: Broadband thermal beaming
35. Jin Xu and Aaswath P. Raman, “Controlling radiative heat flows in interior spaces to improve heating and cooling efficiency” iScience, 24, 102825 (2021). [preprint]
- Highlighted in Joule: Magic Walls
34. Christopher Yeung, Ju-Ming Tsai, Brian King, Benjamin Pham, Julia Liang, David Ho, Mark W. Knight and Aaswath P. Raman, “Multiplexed supercell metasurface design and optimization with tandem residual networks” Nanophotonics 10 (3), 1133-1143 (2021).
33. Xin Huang, Jyotirmoy Mandal and Aaswath P. Raman, “Do-it-yourself radiative cooler as a radiative cooling standard and cooling component for device design” Journal of Photonics for Energy, 12(1), 012112 (2021).
32. Jyotirmoy Mandal*, Xin Huang* and Aaswath P. Raman, “Accurately Quantifying Clear-Sky Radiative Cooling Potentials: A Temperature-correction to the Transmittance-based approximation” Atmosphere 12(9), 1195 (2021). [preprint]
2020
31. Bin Zhao, Gang Pei and Aaswath P. Raman, “Modeling and optimization of radiative cooling based thermoelectric generators” Applied Physics Letters, 117, 163903 (2020). [Accepted manuscript][arXiv]
30. Christopher Yeung, Ju-Ming Tsai, Yusaku Kawagoe, Brian King, David Ho, Mark W. Knight and Aaswath P. Raman, “Elucidating the Behavior of Nanophotonic Structures through Explainable Machine Learning Algorithms” ACS Photonics, 7, 8, 2309-2318 (2020). [preprint]
29. Jyotirmoy Mandal, Yuan Yang, Nanfang Yu and Aaswath P. Raman, “Paints a Scalable and Effective Radiative Cooling Technology for Buildings” Joule, 4 (7), 1350-1356 (2020). [pdf]
28. Aaswath P. Raman, “Thermal light tunnels its way into electricity” Science, 367 (6484), 1301 (2020).
27. Aaswath P. Raman, Wei Li and Shanhui Fan, “Generating Light from Darkness”, Joule 3, 1–8 (2019).
- Featured in: New York Times, Science, PBS
Pre-UCLA
26. Aaswath P. Raman, Zongfu Yu and Shanhui Fan, “Limits on Broadband Absorption Enhancement in the Presence of Multiple Lossy Materials”, arXiv:1812.10429 (2019).
25. Eli Goldstein, Dennis Nasuta, Song Li, Cara Martin and Aaswath Raman, “Free Subcooling from the Sky: Improving the Efficiency of Air Conditioning Systems”, 17th International Refrigeration and Air Conditioning Conference, 1913 (2018).
24. Shanhui Fan and Aaswath Raman, “Metamaterials for radiative sky cooling“, National Science Review (2018). *Invited review.
23. Yu Shi, Wei Li, Aaswath Raman and Shanhui Fan, “Optimization of multi-layer optical films with a memetic algorithm and mixed integer programming“, ACS Photonics (2017).
22. Eli Goldstein*, Aaswath Raman* and Shanhui Fan, “Sub-ambient non-evaporative fluid cooling with the sky“, Nature Energy, 2 (9), 17143 (2017).
21. Aaswath Raman, Linxiao Zhu and Shanhui Fan, “Harnessing the Coldness of the Universe by Radiative Cooling to Improve Energy Efficiency and Generation” (Roadmap on Optical Energy Conversion), Journal of Optics, 18 (2016). *Invited
20. Zhen Chen, Linxiao Zhu, Aaswath Raman and Shanhui Fan, Radiative cooling to deep sub-freezing temperatures through a 24-h day–night cycle, Nature Communications, 7, 21 (2016).
19. Alexander Cerjan, Aaswath Raman and Shanhui Fan, “Exceptional contours and band structure design in parity-time symmetric photonic crystals”, Physical Review Letters, 116, 203902 (2016).
18. Linxiao Zhu*, Aaswath Raman* and Shanhui Fan, “Radiative cooling of solar absorbers using a visibly-transparent photonic crystal thermal blackbody”, Proceedings of the National Academy of Sciences, 112 (40), 12282-12287 (2015). (Highlighted Article)
17. Aaswath Raman, Marc Anoma, Linxiao Zhu, Eden Rephaeli and Shanhui Fan, “Passive Radiative Cooling Below Ambient Air Temperature Under Direct Sunlight”, Nature, 515, 540-544 (2014). (Highlighted on Cover)
16. Linxiao Zhu, Aaswath Raman, Ken Wang, Marc Anoma and Shanhui Fan, “Radiative Cooling of Solar Cells”, Optica, 1 (1), 32-38 (2014).
15. Ken Wang, Zongfu Yu, Victor Liu, Aaswath Raman, Yi Cui and Shanhui Fan, “Light Trapping in Photonic Crystals”, Energy & Environmental Science 7, 2725-2738 (2014).
14. Aaswath Raman, Wonseok Shin and Shanhui Fan, “Metamaterial Band Theory: Fundamentals & Applications”, Science China Information Sciences, 56, 12, 1-14 (2013). *Invited Review Paper
13. Linxiao Zhu, Aaswath Raman and Shanhui Fan, “Color-Preserving Daytime Radiative Cooling”, Applied Physics Letters, 103, 223902 (2013).
12. Aaswath Raman, Wonseok Shin and Shanhui Fan, “Upper bound on the modal material loss rate in plasmonic and metamaterial systems”, Physical Review Letters, 110, 183901 (2013).
11. Eden Rephaeli*, Aaswath Raman* and Shanhui Fan, “Ultrabroadband Photonic Structures to Achieve High-Performance Daytime Radiative Cooling”, Nano Letters, 13, 1457-1461 (2013) (*co-first authors).
10. Zongfu Yu, Aaswath Raman and Shanhui Fan, “Thermodynamic upper bound on broadband light coupling with photonic structures”, Physical Review Letters, 109, 173901 (2012).
9. Wonseok Shin, Aaswath Raman and Shanhui Fan, “Instantaneous electric energy and electric power dissipation in dispersive media”, J. Opt. Soc. Am. B 29, 1048-1054 (2012).
8. Zongfu Yu, Aaswath Raman and Shanhui Fan, “Nanophotonic light-trapping theory for solar cells”, Applied Physics A (2011), Invited Paper.
7. Aaswath Raman, Zongfu Yu and Shanhui Fan, “Dielectric nanostructures for broadband light trapping in organic solar cells”, Optics Express, 19, 20, 19015 (2011).
6. Aaswath Raman and Shanhui Fan, “Perturbation theory for plasmonic modulation and sensing”, Physical Review B, 83, 205131 (2011).
5. Zongfu Yu, Aaswath Raman, and Shanhui Fan, “Fundamental limit of nanophotonic light trapping in solar cells”, Proceedings of the National Academy of Sciences, 107 (41), 17491-17496 (2010).
4. Zongfu Yu, Aaswath Raman, and Shanhui Fan, “Fundamental limit of light trapping in grating structures”,Optics Express, 18, 103, A366 (2010).
3. Aaswath Raman and Shanhui Fan, “Photonic band structure of dispersive metamaterials formulated as a Hermitian eigenvalue problem”, Physical Review Letters, 104, 087401 (2010). [pdf]
2. Krysta M. Svore, Qiang Wu, Chris Burges, and Aaswath Raman, “Improving Web Spam Classification using Rank-time Features”, Proceedings of Adversarial Information Retrieval on the Web (AIRWeb), January 2007.
1. Aaswath Raman, Mariangela Lisanti, David J. Wilner, Chunhua Qi, and Michiel Hogerheijde, “A Keplerian Disk around the Herbig Ae star HD169142″ ,The Astronomical Journal, 131, 2290 (2006). [pre-print]