Article
Chemistry, Multidisciplinary
Taro Yoshikawa, Ming Liu, Shery L. Y. Chang, Inga C. Kuschnerus, Yuto Makino, Akihiko Tsurui, Tomoaki Mahiko, Masahiro Nishikawa
Summary: Detonation nanodiamonds have promising applications in various fields. This study characterized the dispersion of non-functionalized and polyglycerol-functionalized DNPs in aqueous suspensions at different ionic strengths. The results showed that functionalized DNPs and increased ionic strength can lead to monodisperse and non-aggregated DNP colloids.
Article
Optics
Yaqiao Wu, Kaiyue Wang, Xing Wei, Ruiang Guo, Zhijian Guo, Gangyuan Jia, Yufei Zhang, Zunpeng Xiao, Chunhui Ren, Yuming Tian
Summary: In this study, the effects of B ion irradiation on the optical centers of diamond were investigated using photoluminescence spectra. High density optical centers were observed at specific wavelengths, and it was found that B ion irradiation and subsequent annealing promoted the formation of these centers. Spatial distribution analysis revealed the mechanism of optical center formation.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Multidisciplinary
Andris Berzins, Hugo Grube, Einars Sprugis, Guntars Vaivars, Ilja Fescenko
Summary: This study investigates the implantation of helium ions into diamonds to create NV layers. By measuring various parameters, it is found that increasing the implantation dose improves the magnetic sensitivity of the sensors. Additionally, subsequent annealing only has a slight impact on sensitivity.
Article
Chemistry, Physical
Adam Filipkowski, Mariusz Mrozek, Grzegorz Stepniewski, Jakub Kierdaszuk, Aneta Drabinska, Tanvi Karpate, Maciej Glowacki, Mateusz Ficek, Wojciech Gawlik, Ryszard Buczynki, Adam Wojciechowski, Robert Bogdanowicz, Mariusz Klimczak
Summary: This research proposes a novel method for integrating diamond particles containing nitrogen-vacancy centers directly into the fiber core, and verifies its magnetic sensing performance. By manually controlling the distribution of diamond particles in the fiber core, precise control over nanoscale features is achieved. The experimental results show that this integration method can achieve uniform distribution of diamond particles in the fiber without significant agglomeration. Furthermore, the fiber demonstrates good magnetic sensing capabilities in the presence of a magnetic field, with a large dynamic range.
Article
Materials Science, Multidisciplinary
Yuan Nie, ShangSheng Li, Qiang Hu, JunZhuo Wang, MeiHua Hu, TaiChao Su, GuoFeng Huang, ZhanChang Li, Yong Li, HongYu Xiao
Summary: The influence of nitrogen impurities on diamond is an important issue, and annealing is a crucial method to modify the state of nitrogen in diamond. This study synthesized C3H6N6 doped diamonds with high nitrogen content and annealed them at high pressure and high temperature (HPHT). The results showed that HPHT annealing improved the transparency of high nitrogen diamond and eliminated or destroyed the pyramid defects on its surface. Furthermore, annealing changed the state of aggregation of nitrogen from C center to A center in high nitrogen diamonds.
Article
Physics, Applied
King Cho Wong, San Lam Ng, Kin On Ho, Yang Shen, Jiahao Wu, Kwing To Lai, Man Yin Leung, Wai Kuen Leung, Durga Bhaktavatsala Rao Dasari, Andrej Denisenko, Joerg Wrachtrup, Sen Yang
Summary: Single color centers in solid have emerged as a promising physical platform for quantum information science. This work proposes and demonstrates a distinct high-temperature annealing (HTA) approach for creating high-quality nitrogen vacancy (N-V) centers in implantation-free diamonds. The created N-V centers possess stable and Fourier-transform-limited optical spectra, and HTA strongly reduces noise sources and improves decoherence time and sensitivity. The study also explores the vacancy activation and defect reformation in spin baths and color centers.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Physical
Sergey I. Kudryashov, Victor G. Vins, Pavel A. Danilov, Evgeny V. Kuzmin, Andrey V. Muratov, Galina Yu. Kriulina, Jiajun Chen, Alexey N. Kirichenko, Yulia S. Gulina, Sergey A. Ostrikov, Peter P. Paholchuk, Michael S. Kovalev, Nikolay B. Rodionov, Alexey O. Levchenko
Summary: Red-colored high-pressure, high-temperature synthesized (HPHT) diamond was irradiated with laser pulses, resulting in the formation of bright spots and the emergence of new aggregated centers with reduced luminescence intensity.
Article
Chemistry, Physical
Yuliya Mindarava, Remi Blinder, Valery A. Davydov, Mustapha Zaghrioui, Viatcheslav N. Agafonov, Cecile Autret, Priyadharshini Balasubramanian, Raul Gonzalez Brouwer, Fedor Jelezko
Summary: This article discusses the synthesis of core-shell diamond nanoparticles with nitrogen-vacancy (NV-) centers and isotopically enriched C-13, formed by overgrowth on previously electron-irradiated nanodiamonds. These particles have potential for hyperpolarizing nuclear spins in fluids.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Optics
Zong-Da Zhang, Si-Yu Yin, Li-Cheng Wang, Ying-De Wang, Yun-Fei Li, Zhen-Nan Tian, Qi-Dai Chen
Summary: An array of single NV centers was prepared using the femtosecond laser direct writing method to address the accuracy and consistency issues in static magnetic field detection. The prepared NV centers have fewer defects and good stress uniformity, with an average spatial positioning error of only 0.2 μm. This array enables high accuracy measurement of magnetic field vector and gradient.
Article
Physics, Multidisciplinary
Hong-Bo Huang, Jun-Jie Lin, Yi-Xuan Yao, Ke-Yu Xia, Zhang-Qi Yin, Qing Ai
Summary: In this article, we propose a method to achieve optical nonreciprocity using rotating nano-diamond with nitrogen-vacancy (NV) centers. By studying the relative motion of the NV center and the propagating fields, we find that the two-photon resonance is disrupted due to the Doppler effect, resulting in the inefficiency of the probe light passing through.
ANNALEN DER PHYSIK
(2022)
Article
Chemistry, Physical
Mariusz Mrozek, Mateusz Schabikowski, Marzena Mitura-Nowak, Janusz Lekki, Marta Marszalek, Adam M. Wojciechowski, Wojciech Gawlik
Summary: The experimental study focused on the longitudinal and transverse relaxation of negatively charged nitrogen-vacancy centers in diamond monocrystals prepared by 1.8 MeV proton implantation. Results showed that proton implantation technique can be versatile in controlling the production of nitrogen-vacancy color centers in thin films.
Article
Materials Science, Multidisciplinary
Sally Eaton-Magana, Christopher M. Breeding, Roy Bassoo
Summary: Green coloration in natural diamonds is often caused by exposure to natural sources of radiation, resulting in shallow lattice damage and green radiation stains. Continued residence in the earth causes these stains to turn brown. The activation energy for the color transition from green to brown was determined to be 1.6 +/- 0.1 eV through isothermal annealing experiments. Photoluminescence mapping revealed changes in the composition of the radiation stains as the diamonds were annealed.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Changhao Li, Rouhollah Soleyman, Mohammad Kohandel, Paola Cappellaro
Summary: A molecular transducer based on NV centers has been proposed to convert SARS-CoV-2 RNA into magnetic noise signal for optical readout. This sensor demonstrates high sensitivity, low false negative rate, and fast detection of the virus.
Article
Optics
Man Zhao, Qijing Lin, Qingzhi Meng, Wenjun Shan, Liangquan Zhu, Yao Chen, Libo Zhao, Zhuangde Jiang
Summary: In this study, a cone-shaped microlens was fabricated and integrated with a multimode fiber to improve the laser excitation and fluorescence collection efficiency of NV centers in diamonds. Experimental results showed a 21-fold enhancement in fluorescence intensity and a 12-fold improvement in sensitivity. This research presents a robust fiber-microlens magnetometer probe with large numerical aperture, which can be used for magnetic field scanning and real-time monitoring.
Article
Materials Science, Multidisciplinary
O. R. Rubinas, V. V. Soshenko, S. Bolshedvorskii, A. Zeleneev, A. S. Galkin, S. A. Tarelkin, S. Y. Troschiev, V. V. Vorobyov, V. N. Sorokin, A. A. Sukhanov, V. G. Vins, A. N. Smolyaninov, A. Akimov
Summary: The research shows that by optimizing the electron irradiation dose in postprocessing procedures, the increased dephasing of nitrogen-vacancy color centers in diamond can be efficiently compensated for, thus extending the range of possible useful concentrations of NV centers in diamonds with natural carbon content.
RESULTS IN PHYSICS
(2021)
