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
Materials Science, Multidisciplinary
Lukas Razinkovas, Marek Maciaszek, Friedemann Reinhard, Marcus W. Doherty, Audrius Alkauskas
Summary: The study conducted ab initio calculations on the photoionization characteristics of the NV center in diamond, revealing the mechanism of spin polarization induced electron state transition. These findings are crucial for interpreting and designing experiments on photoionization of NV centers.
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
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
Chemistry, Multidisciplinary
Nattakarn Suntornwipat, Saman Majdi, Markus Gabrysch, Kiran Kumar Kovi, Viktor Djurberg, Ian Friel, Daniel J. Twitchen, Jan Isberg
Summary: Researchers demonstrate electrostatic control of valley currents in ultrapure single-crystalline diamond, proposing a model to interpret experimental data and paving the way for the development of valleytronic devices.
Article
Optics
V. P. Mironov, E. N. Tel'minov, D. E. Genin, E. I. Lipatov, M. A. Shulepov, A. E. Dormidonov, A. D. Savvin, A. P. Yelisseyev, V. G. Vins
Summary: The characteristics of diamond affecting laser generation in the context of NV-diamond laser creation were investigated using optical pumping by the second harmonic of the Nd:YAG laser. Nonlinear intensity increase in the 700-750 nm spectral region and a pronounced peak of superluminescence at approximately 718 nm were observed under high intensity irradiation. Nonlinear pumping radiation absorption and accumulation of NV centers in the excited state were detected with increasing pumping intensity. The calculated position of the photoluminescence band matches experimental data closely, considering the population inversion density of the color centers and diamond's absorption spectrum.
APPLIED PHYSICS B-LASERS AND OPTICS
(2023)
Article
Physics, Applied
P. Raecke, L. Pietzonka, J. Meijer, D. Spemann, R. Wunderlich
Summary: NV centers in diamond were engineered by introducing vacancies locally through argon ion implantation in type Ib diamond with subsequent annealing. The number of NV centers created from vacancies of a single implanted argon ion ranges from 0.04 to 0.79 depending on the ion energy. The diffusion of vacancies during annealing plays a significant role in NV yield behavior.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Hiroshige Deguchi, Tsukasa Hayashi, Hiroya Saito, Yoshiki Nishibayashi, Minori Teramoto, Masanori Fujiwara, Hiroki Morishita, Norikazu Mizuochi, Natsuo Tatsumi
Summary: We have developed a compact and portable measuring instrument using diamond NV centers, which can be powered by a laptop computer's USB 3.0. The portability is achieved by low power consumption of the optics, thanks to the diamond corner cube that enhances the current of the photodiode by 2.1 times compared to planar diamond, and the microwave source that reduced power consumption by 20 dB using a microwave resonator with a λ/4 open stub to magnetically drive the NV center. These results contribute to the social implementation of diamond sensors.
APPLIED PHYSICS EXPRESS
(2023)
Article
Optics
Muhib Omar, Andreas Conta, Andreas Westerhoff, Raphael Hasse, Georgios Chatzidrosos, Dmitry Budker, Arne Wickenbrock
Summary: We propose a design to enhance the collected fluorescence of nitrogen-vacancy color centers in diamond for quantum-sensing. Our experimental results demonstrate a 3.8-fold increase in collected fluorescence when comparing opposite emitting surfaces, which is consistent with ray-tracing simulation. This design improves the sensitivity in optical readout-based measurements of various physical quantities.
Article
Nanoscience & Nanotechnology
Aedan Gardill, Ishita Kemeny, Yanfei Li, Maryam Zahedian, Matthew C. Cambria, Xiyu Xu, Vincenzo Lordi, Adam Gali, Jeronimo R. . Maze, Jennifer T. Choy, Shimon Kolkowitz
Summary: Super-resolution Airy disk microscopy, a novel technique presented in this study, allows nanoscale microscopy in a standard confocal microscope without specialized optics. The technique, combined with ground state depletion, successfully images and controls NV centers in diamond below the diffraction limit, achieving more than 14-fold improvement in resolution compared to the conventional limit.
Review
Physics, Applied
Sebastien Pezzagna, Jan Meijer
Summary: Artificial atoms like NV centers in diamond have enabled the realization of fully functional qubits in a solid at room temperature. Although quantum sensing has been established and advancements are being made, the development of a quantum computer remains challenging due to technical reasons and limitations of available materials. Ideas are being proposed to overcome these limitations, and the field is constantly progressing with promising concepts for development.
APPLIED PHYSICS REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Umberto Celano, Hai Zhong, Florin Ciubotaru, Laurentiu Stoleriu, Alexander Stark, Peter Rickhaus, Felipe Favaro de Oliveira, Mathieu Munsch, Paola Favia, Maxim Korytov, Patricia Van Marcke, Patrick Maletinsky, Christoph Adelmann, Paul van der Heide
Summary: In this study, nonperturbative field distribution mapping in ultra-scaled magnetic nanowires with diameters down to 6 nm was achieved using scanning nitrogen-vacancy magnetometry, enabling localized, minimally invasive magnetic imaging with sensitivity down to 3 μT Hz(-1/2). The imaging revealed the presence of weak magnetic inhomogeneities inside in-plane magnetized nanowires, largely undetectable with standard metrology. The strong magnetic field confinement in the nanowires allowed for the study of the interaction between the stray magnetic field and the nitrogen-vacancy sensor, clarifying the formation mechanisms for technologically relevant magnetic nanostructures.
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, Multidisciplinary
Hu Wei, Liu Xiaofeng, Li Zhenyu, Yang Jinlong
Summary: This study systematically investigated the surface and size effects on the structural, electronic, magnetic properties, and stability of NV centers doped in diamond nanowires. It was found that surface modifications provide a precise and effective way to control the stability of charged defects in semiconductors.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2021)
Article
Materials Science, Multidisciplinary
Kin On Ho, Man Yin Leung, Yiu Yung Pang, King Cho Wong, Ping Him Ng, Sen Yang
Summary: This study investigates the properties inside polymeric products using a distinctive protocol with the negatively charged nitrogen vacancy center in nanodiamond. By measuring the time dependence of local pressure and strain during the chemical processes, the researchers were able to probe the local shear stress inside the materials in situ. This methodology is applicable to any kind of transparent amorphous solids with stress in the order of MPa and could potentially be applied to nanoscale in situ property studies with better apparatus.
ACS APPLIED POLYMER MATERIALS
(2021)
