---
OA_place: repository
OA_type: green
_id: '21524'
abstract:
- lang: eng
  text: In X-ray tubes, more than 99% of the kilowatts of power supplied to generate
    X-rays via bremsstrahlung is lost as heat 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─the hottest part of the device by far. We predict that nanophotonic
    patterning of the anode of an X-ray tube enhances heat dissipation via thermal
    radiation, enabling it to operate at higher powers without an increase in temperature.
    The focal spot size, which is related to the spatial coherence of generated X-rays,
    can also be reduced at a constant temperature. A major advantage of our “nanophotonic
    thermal management” approach is that in principle, it allows complete control
    over the spectrum and direction of thermal radiation, which can lead to optimal
    thermal routing and improved performance.
article_processing_charge: No
article_type: original
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>ACS Nano</i>. 2025;19(35):31363-31370. doi:<a href="https://doi.org/10.1021/acsnano.5c05186">10.1021/acsnano.5c05186</a>
  apa: Pajovic, S., Roques-Carmes, C., Choi, S., Kooi, S. E., Gupta, R., Zalis, M.
    E., … Soljačić, M. (2025). Nanophotonic thermal management in X-ray tubes. <i>ACS
    Nano</i>. American Chemical Society. <a href="https://doi.org/10.1021/acsnano.5c05186">https://doi.org/10.1021/acsnano.5c05186</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>ACS Nano</i>. American Chemical Society, 2025.
    <a href="https://doi.org/10.1021/acsnano.5c05186">https://doi.org/10.1021/acsnano.5c05186</a>.
  ieee: S. Pajovic <i>et al.</i>, “Nanophotonic thermal management in X-ray tubes,”
    <i>ACS Nano</i>, vol. 19, no. 35. American Chemical Society, pp. 31363–31370,
    2025.
  ista: Pajovic S, Roques-Carmes C, Choi S, Kooi SE, Gupta R, Zalis ME, Čelanović
    I, Soljačić M. 2025. Nanophotonic thermal management in X-ray tubes. ACS Nano.
    19(35), 31363–31370.
  mla: Pajovic, Simo, et al. “Nanophotonic Thermal Management in X-Ray Tubes.” <i>ACS
    Nano</i>, vol. 19, no. 35, American Chemical Society, 2025, pp. 31363–70, doi:<a
    href="https://doi.org/10.1021/acsnano.5c05186">10.1021/acsnano.5c05186</a>.
  short: S. Pajovic, C. Roques-Carmes, S. Choi, S.E. Kooi, R. Gupta, M.E. Zalis, I.
    Čelanović, M. Soljačić, ACS Nano 19 (2025) 31363–31370.
date_created: 2026-03-30T12:22:47Z
date_published: 2025-08-26T00:00:00Z
date_updated: 2026-04-27T08:56:39Z
day: '26'
doi: 10.1021/acsnano.5c05186
extern: '1'
external_id:
  arxiv:
  - '2503.20946'
intvolume: '        19'
issue: '35'
keyword:
- X-ray tubes
- thermal management
- nanophotonics
- thermal radiation
- X-ray imaging
- high-temperature
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2503.20946
month: '08'
oa: 1
oa_version: Preprint
page: 31363-31370
publication: ACS Nano
publication_identifier:
  eissn:
  - 1936-086X
  issn:
  - 1936-0851
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nanophotonic thermal management in X-ray tubes
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2025'
...