Cover Feature: Sharp Diamond Needles for Single‐Photon Emission (Adv. Photonics Res. 2/2026)
Single-Crystal Diamond Needles In their Research Article (10.1002/adpr.202500302), Sergei Malykhin, Polina Kuzhir, and co-workers investigate the morphological evolution of single-crystal diamond needles through oxidation in air at 650–700 °C. Electron microscopy reveals temperature- and time-dependent sharpening, length reduction, and surface changes. Measurements of the second-order correlation function show that optimized oxidation enables obtaining single nitrogen-vacancy centers at needle tips for single-photon probes.
Authors
- Renata Karpicz (ORCID: https://orcid.org/0000-0001-5884-4538)
- Е.М. Филоненко (ORCID: https://orcid.org/0000-0002-9477-612X)
- P. Kuzhir (ORCID: https://orcid.org/0000-0003-3689-0837)
- Priyadharshini Balasubramanian
- Yaraslau Padrez (ORCID: https://orcid.org/0000-0003-0852-6579)
- Mariam Quarshie (ORCID: https://orcid.org/0000-0003-4290-8060)
- Sergei Malykhin
- Rizwan Sultan
- Alexander Obraztsov
- Fedor Jelezko
Institutions
- University of Eastern Finland (FI)
- Center for Physical Sciences and Technology (LT)
- Finland University (FI)
- Center for Integrated Quantum Science and Technology (DE)
Publication Details
- Journal
- Advanced Photonics Research
- Published
- 2026-02-01
- DOI
- https://doi.org/10.1002/adpr.70153
- Primary Topic
- Diamond and Carbon-based Materials Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00