---
OA_place: repository
OA_type: green
_id: '21694'
abstract:
- lang: eng
  text: In X-ray tubes, more than 99% of the kilowatts of power supplied to generate
    X-rays via bremsstrahlung are lost in the form of heat generation in the anode.
    Therefore, thermal management is a critical barrier to the development of more
    powerful X-ray tubes with higher brightness and spatial coherence, which are needed
    to translate imaging modalities such as phase-contrast imaging to the clinic.
    In rotating anode X-ray tubes, the most common design, thermal radiation is a
    bottleneck that prevents efficient cooling of the anode$\unicode{x2014}$the hottest
    part of the device by far. We predict that nanophotonically patterning the anode
    of an X-ray tube enhances heat dissipation via thermal radiation, enabling it
    to operate at higher powers without increasing in temperature. The focal spot
    size, which is related to the spatial coherence of generated X-rays, can also
    be made smaller at a constant temperature. A major advantage of our "nanophotonic
    thermal management" approach is that in principle, it allows for complete control
    over the spectrum and direction of thermal radiation, which can lead to optimal
    thermal routing and improved performance.
article_number: '2503.20946'
article_processing_charge: No
arxiv: 1
author:
- first_name: Simo
  full_name: Pajovic, Simo
  last_name: Pajovic
- first_name: Charles
  full_name: Roques-Carmes, Charles
  id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  last_name: Roques-Carmes
- first_name: Seou
  full_name: Choi, Seou
  last_name: Choi
- first_name: Steven E.
  full_name: Kooi, Steven E.
  last_name: Kooi
- first_name: Rajiv
  full_name: Gupta, Rajiv
  last_name: Gupta
- first_name: Michael E.
  full_name: Zalis, Michael E.
  last_name: Zalis
- first_name: Ivan
  full_name: Čelanović, Ivan
  last_name: Čelanović
- first_name: Marin
  full_name: Soljačić, Marin
  last_name: Soljačić
citation:
  ama: Pajovic S, Roques-Carmes C, Choi S, et al. Nanophotonic thermal management
    in X-ray tubes. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2503.20946">10.48550/arXiv.2503.20946</a>
  apa: Pajovic, S., Roques-Carmes, C., Choi, S., Kooi, S. E., Gupta, R., Zalis, M.
    E., … Soljačić, M. (n.d.). Nanophotonic thermal management in X-ray tubes. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/arXiv.2503.20946">https://doi.org/10.48550/arXiv.2503.20946</a>
  chicago: Pajovic, Simo, Charles Roques-Carmes, Seou Choi, Steven E. Kooi, Rajiv
    Gupta, Michael E. Zalis, Ivan Čelanović, and Marin Soljačić. “Nanophotonic Thermal
    Management in X-Ray Tubes.” <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/arXiv.2503.20946">https://doi.org/10.48550/arXiv.2503.20946</a>.
  ieee: S. Pajovic <i>et al.</i>, “Nanophotonic thermal management in X-ray tubes,”
    <i>arXiv</i>. .
  ista: Pajovic S, Roques-Carmes C, Choi S, Kooi SE, Gupta R, Zalis ME, Čelanović
    I, Soljačić M. Nanophotonic thermal management in X-ray tubes. arXiv, 2503.20946.
  mla: Pajovic, Simo, et al. “Nanophotonic Thermal Management in X-Ray Tubes.” <i>ArXiv</i>,
    2503.20946, doi:<a href="https://doi.org/10.48550/arXiv.2503.20946">10.48550/arXiv.2503.20946</a>.
  short: S. Pajovic, C. Roques-Carmes, S. Choi, S.E. Kooi, R. Gupta, M.E. Zalis, I.
    Čelanović, M. Soljačić, ArXiv (n.d.).
date_created: 2026-04-09T09:10:41Z
date_published: 2025-03-26T00:00:00Z
date_updated: 2026-04-13T11:02:19Z
day: '26'
doi: 10.48550/arXiv.2503.20946
extern: '1'
external_id:
  arxiv:
  - '2503.20946'
fulldoi: https://doi.org/10.48550/arXiv.2503.20946
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2503.20946
month: '03'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
scopus_import: '1'
status: public
title: Nanophotonic thermal management in X-ray tubes
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...