Photoluminescent nanodiamonds: Comparison of the photoluminescence saturation properties of the NV color center and a cyanine dye at the single emitter level, and study of the color center concentration under different preparation conditions

2010 ◽  
Vol 19 (7-9) ◽  
pp. 988-995 ◽  
Author(s):  
Orestis Faklaris ◽  
Jacques Botsoa ◽  
Thierry Sauvage ◽  
Jean-François Roch ◽  
François Treussart
Keyword(s):  
Color Center ◽  
Cyanine Dye ◽  
Saturation Properties ◽  
Preparation Conditions ◽  
Single Emitter ◽  
Nv Color Center

scholarly journals A Diamond Temperature Sensor Based on the Energy Level Shift of Nitrogen-Vacancy Color Centers

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1576 ◽  
Author(s):  
Mingyang Yang ◽  
Qilong Yuan ◽  
Jingyao Gao ◽  
Shengcheng Shu ◽  
Feiyue Chen ◽  
...  
Keyword(s):  
Energy Level ◽  
Temperature Measurement ◽  
Color Center ◽  
Environmental Temperature ◽  
Nitrogen Vacancy ◽  
Color Centers ◽  
Zero Phonon Line ◽  
Level Shifts ◽  
Nv Color Center ◽  
Nv Centers

The nitrogen-vacancy (NV) color center in chemical vapor deposition (CVD) diamond has been widely investigated in quantum information and quantum biosensors due to its excellent photon emission stability and long spin coherence time. However, the temperature dependence of the energy level of NV color centers in diamond is different from other semiconductors with the same diamond cubic structure for the high Debye temperature and very small thermal expansion coefficient of diamond. In this work, a diamond sensor for temperature measurement with high precision was fabricated based on the investigation of the energy level shifts of NV centers by Raman and photoluminescence (PL) spectra. The results show that the intensity and linewidth of the zero-phonon line of NV centers highly depend on the environmental temperature, and the energy level shifts of NV centers in diamond follow the modified Varshni model very well, a model which is better than the traditional version. Accordingly, the NV color center shows the ability in temperature measurement with a high accuracy of up to 98%. The high dependence of NV centers on environmental temperature shows the possibility of temperature monitoring of NV center-based quantum sensors in biosystems.

Research on the common mode suppression method of temperature noise in an NV color center spin magnetometer

2021 ◽  
Vol 18 (11) ◽  
pp. 115201
Author(s):  
Shaozhuo Lin ◽  
Qi Wang ◽  
Hao Guo ◽  
Huanfei Wen ◽  
ZhongHao Li ◽  
...  
Keyword(s):  
Color Center ◽  
Common Mode ◽  
Mode Suppression ◽  
Suppression Method ◽  
The Common ◽  
Temperature Noise ◽  
Nv Color Center

Single-channel vector magnetic information detection method based on diamond NV color center

2021 ◽  
Author(s):  
Qin-Qin Wang ◽  
Rui-Rong Wang ◽  
Jin-Ping Liu ◽  
Shao-Zhuo Lin ◽  
Liang-Wei Wu ◽  
...  
Keyword(s):  
Color Center ◽  
Detection Method ◽  
Single Channel ◽  
Information Detection ◽  
Nv Color Center

Generation of Quantum Entanglement with the NV Color Center in Diamond

2017 ◽  
Vol 23 (2) ◽  
pp. 201-207
Author(s):  
许丽 XU Li ◽  
刘阿鹏 LIU A-peng
Keyword(s):  
Quantum Entanglement ◽  
Color Center ◽  
Nv Color Center

Coherence Dynamic Decoupling for Spin of NV- Color Center Ensemble in Diamond

2019 ◽  
Vol 25 (2) ◽  
pp. 215-220
Author(s):  
宁伟光 NING Wei-guang ◽  
张扬 ZHANG Yang ◽  
李中豪 LI Zhong-hao ◽  
唐军 TANG Jun
Keyword(s):  
Color Center ◽  
Dynamic Decoupling ◽  
Nv Color Center

scholarly journals Enhancement of magnetic detection by ensemble NV color center based on magnetic flux concentration effect

2021 ◽  
Vol 70 (14) ◽  
pp. 147601-147601
Author(s):  
Li Zhong-Hao ◽  
◽  
Wang Tian-Yu ◽  
Guo Qi ◽  
Guo Hao ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Color Center ◽  
Concentration Effect ◽  
Flux Concentration ◽  
Magnetic Detection ◽  
Nv Color Center

Interpretation of irradiation-induced changes in electron diffractograms and images of extinction contours at low temperatures

1984 ◽  
Vol 42 ◽  
pp. 268-269
Author(s):  
E. Knapek ◽  
H. Formanek ◽  
G. Lefranc ◽  
I. Dietrich
Keyword(s):  
Low Temperatures ◽  
Carbon Films ◽  
Organic Crystals ◽  
Wide Spread ◽  
Lens System ◽  
Preparation Conditions ◽  
Thin Carbon ◽  
Electron Diffractograms ◽  
Diffraction Patterns ◽  
Induced Changes

A few years ago results on cryoprotection of L-valine were reported, where the values of the critical fluence De i.e, the electron exposure which decreases the intensity of the diffraction reflections by a factor e, amounted to the order of 2000 + 1000 e/nm2. In the meantime a discrepancy arose, since several groups published De values between 100 e/nm2 and 1200 e/nm2 /1 - 4/. This disagreement and particularly the wide spread of the results induced us to investigate more thoroughly the behaviour of organic crystals at very low temperatures during electron irradiation.For this purpose large L-valine crystals with homogenuous thickness were deposited on holey carbon films, thin carbon films or Au-coated holey carbon films. These specimens were cooled down to nearly liquid helium temperature in an electron microscope with a superconducting lens system and irradiated with 200 keU-electrons. The progress of radiation damage under different preparation conditions has been observed with series of electron diffraction patterns and direct images of extinction contours.

The 3-Dimensional Molecular Structure of the Actin Filament Revisited

1985 ◽  
Vol 43 ◽  
pp. 480-481
Author(s):  
U. Aebi ◽  
R. Millonig ◽  
H. Salvo
Keyword(s):  
Actin Filament ◽  
Supramolecular Assembly ◽  
Specimen Preparation ◽  
X Ray Diffraction ◽  
Single Filament ◽  
X Ray ◽  
3 Dimensional ◽  
Filament Diameter ◽  
Preparation Conditions ◽  
Apparent Diameter

To date, most 3-D reconstructions of undecorated actin filaments have been obtained from actin filament paracrystal data (for refs, see 1,2). However, due to the fact that (a) the paracrystals may be several filament layers thick, and (b) adjacent filaments may sustantially interdigitate, these reconstructions may be subject to significant artifacts. None of these reconstructions has permitted unambiguous tracing or orientation of the actin subunits within the filament. Furthermore, measured values for the maximal filament diameter both determined by EM and by X-ray diffraction analysis, vary between 6 and 10 nm. Obviously, the apparent diameter of the actin filament revealed in the EM will critically depend on specimen preparation, since it is a rather flexible supramolecular assembly which can easily be bent or distorted. To resolve some of these ambiguities, we have explored specimen preparation conditions which may preserve single filaments sufficiently straight and helically ordered to be suitable for single filament 3-D reconstructions, possibly revealing molecular detail.

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