Stanford Advisors


All Publications


  • Integrated near-field thermo-photovoltaics for heat recycling. Nature communications Bhatt, G. R., Zhao, B. n., Roberts, S. n., Datta, I. n., Mohanty, A. n., Lin, T. n., Hartmann, J. M., St-Gelais, R. n., Fan, S. n., Lipson, M. n. 2020; 11 (1): 2545

    Abstract

    Energy transferred via thermal radiation between two surfaces separated by nanometer distances can be much larger than the blackbody limit. However, realizing a scalable platform that utilizes this near-field energy exchange mechanism to generate electricity remains a challenge. Here, we present a fully integrated, reconfigurable and scalable platform operating in the near-field regime that performs controlled heat extraction and energy recycling. Our platform relies on an integrated nano-electromechanical system that enables precise positioning of a thermal emitter within nanometer distances from a room-temperature germanium photodetector to form a thermo-photovoltaic cell. We demonstrate over an order of magnitude enhancement of power generation (Pgen ~ 1.25 μWcm-2) in our thermo-photovoltaic cell by actively tuning the gap between a hot-emitter (TE ~ 880 K) and the cold photodetector (TD ~ 300 K) from ~ 500 nm down to ~ 100 nm. Our nano-electromechanical system consumes negligible tuning power (Pgen/PNEMS ~ 104) and relies on scalable silicon-based process technologies.

    View details for DOI 10.1038/s41467-020-16197-6

    View details for PubMedID 32439917

  • Integrated photonics for NASA applications Krainak, M., Stephen, M., Troupaki, E., Tedder, S., Reyna, B., Klamkin, J., Zhao, H., Song, B., Fridlander, J., Minh Tran, Bowers, J. E., Bergman, K., Lipson, M., Rizzo, A., Datta, I., Abrams, N., Mookherjea, S., Ho, S., Bei, Q., Huang, Y., Tu, Y., Moslehi, B., Harris, J., Matsko, A., Savchenkov, A., Liu, G., Proietti, R., Yoo, S. B., Johansson, L., Dorrer, C., Arteaga-Sierra, F. R., Qiao, J., Gong, S., Gu, T., Ohanian, O., Ni, X., Ding, Y., Duan, Y., Dalir, H., Chen, R. T., Sorger, V. J., Komljenovic, T., Glebov, A. L., Leisher, P. O. SPIE-INT SOC OPTICAL ENGINEERING. 2019

    View details for DOI 10.1117/12.2509808

    View details for Web of Science ID 000468808800009