# Direct observation of the topological pruning in silica glass network; the key for realizing extreme transparency

https://mdr.nims.go.jp/datasets/1923fba1-9d66-4e43-a240-a19ce3bb3797

## File

- [Ono_et_al-2025-NPG_Asia_Materials.pdf](https://mdr.nims.go.jp/filesets/b531327f-8aad-4180-8250-075bf2a2be4d/download) ([Detail](https://mdr.nims.go.jp/filesets/b531327f-8aad-4180-8250-075bf2a2be4d.md))

## Id

1923fba1-9d66-4e43-a240-a19ce3bb3797

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-21T06:06:37.232768Z

## Updated at

2025-02-23T13:51:32.221898Z

## Published at

2025-02-23T13:51:32.293293Z

## Doi



## First published url

https://doi.org/10.1038/s41427-025-00589-5

## Date published

2025-02-21

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Direct observation of the topological pruning in silica glass network; the
    key for realizing extreme transparency
  title_type: original
  lang: en

## Description

- description: The optical transparency of silica glass significantly improves when
    subjected to compression at its melting temperature. Using a rare hydrostatic
    iso-pressure apparatus capable of reaching 0.98 GPa at 1800°C with Ar-gas as the
    pressure medium, we obtained centimeter-sized glass samples, allowing us to measure
    various properties. Both the density and refractive index increased with pressure,
    while the refractive index dispersion decreased monotonically. However, Rayleigh
    scattering intensity, and small ring structures show a minimum around 0.8 GPa.
    High-energy X-ray scattering analysis indicate that the short-range structure,
    around 4 Å, governs the monotonic trends in averaged physical properties such
    as density and refractive index. In contrast, non-monotonic changes are observed
    with the disappearance of intermediate-range order at around 8 Å. This simplification
    of structural ordering is crucial for achieving extreme transparency in silica
    glass. The effect of suppression of the 8 Å order is well explained by the predicted
    topological pruning phenomenon, where large voids and small unstable ring structures
    vanish, leading to minimal light scattering under high pressure. Our experimental
    findings also reveal that the optimal pressure for achieving this transparency
    is much lower than previously predicted, which makes the process more feasible
    for mass production applications.
  description_type: abstract
  lang: und

## Creator

- name: Madoka Ono
  role: author
  orcid: https://orcid.org/0000-0002-1216-2731
- name: Yasuhito Tanabe
  role: author
- name: Masaya Fujioka
  role: author
- name: Hiroki Yamada
  role: author
- name: Koji Ohara
  role: author
  orcid: https://orcid.org/0000-0002-3134-512X
- name: Shinji Kohara
  role: author
  orcid: https://orcid.org/0000-0001-9596-2680
- name: Masanori Fujinami
  role: author
- name: Junji Nishii
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: glass
  schema: not_defined
- subject: fiber
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: NPG Asia Materials
  issn: '18844057'
  volume: '17'
  issue: '1'
  article_number: '5'

## Conference



## Related item



## Funding

- identifier: 20H05880
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21H01835
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21K19016
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 24K01371
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 20H05880
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21H01835
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 21K19016
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 24K01371
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: 20H05880
  funder_name: MEXT | Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: b531327f-8aad-4180-8250-075bf2a2be4d
  filename: Ono_et_al-2025-NPG_Asia_Materials.pdf
  content_type: application/pdf
  size: 1301012
  md5: b1049376b4b49ec9f7b9a3ea46c98d0d

## Thumbnail

fileset_id: b531327f-8aad-4180-8250-075bf2a2be4d
filename: Ono_et_al-2025-NPG_Asia_Materials.pdf