Diamond Nanoparticles: Jewels for Chemistry and Physics

Krueger, Anke

doi:10.1002/adma.200701856

Cited by 272 publications

(186 citation statements)

References 41 publications

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“…There is rapidly growing industrial production of submicron diamond powders (Krueger, 2008), so there is no doubt that particles with appropriate morphology can be produced. However, the industrial production volumes and academic literature on production technologies are far smaller than for alumina.…”

Section: Test Cases: Alumina and Diamond Aerosol Particlesmentioning

confidence: 99%

Solar geoengineering using solid aerosol in the stratosphere

2015

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Abstract. Solid aerosol particles have long been proposed as an alternative to sulfate aerosols for solar geoengineering. Any solid aerosol introduced into the stratosphere would be subject to coagulation with itself, producing fractal aggregates, and with the natural sulfate aerosol, producing liquidcoated solids. Solid aerosols that are coated with sulfate and/or have formed aggregates may have very different scattering properties and chemical behavior than uncoated nonaggregated monomers do. We use a two-dimensional (2-D) chemistry-transport-aerosol model to capture the dynamics of interacting solid and liquid aerosols in the stratosphere. As an example, we apply the model to the possible use of alumina and diamond particles for solar geoengineering. For 240 nm radius alumina particles, for example, an injection rate of 4 Tg yr −1 produces a global-average shortwave radiative forcing of −1.2 W m −2 and minimal self-coagulation of alumina although almost all alumina outside the tropics is coated with sulfate. For the same radiative forcing, these solid aerosols can produce less ozone loss, less stratospheric heating, and less forward scattering than sulfate aerosols do. Our results suggest that appropriately sized alumina, diamond or similar high-index particles may have less severe technology-specific risks than sulfate aerosols do. These results, particularly the ozone response, are subject to large uncertainties due to the limited data on the rate constants of reactions on the dry surfaces.

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Section: Test Cases: Alumina and Diamond Aerosol Particlesmentioning

confidence: 99%

Solar geoengineering using solid aerosol in the stratosphere

2015

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“…Over 500 different color centers in diamond are known [3] ; their emission wavelengths span a spectral range from the ultraviolet to the near infrared. Furthermore, the diamond host material provides beneficial qualities like chemical inertness, biocompatibility, high transparency from the ultraviolet to infrared spectral range as well as a high mechanical strength (high Young`s modulus) and exceptionally high thermal conductivity [4][5][6] . Furthermore, color centers in diamond have to be considered as potential building blocks of future quantum information processing (QIP) architectures and integrated nanophotonic devices as detailed in the following.…”

Section: Introductionmentioning

confidence: 99%

Diamond Nanophotonics

Aharonovich

Neu

2014

Advanced Optical Materials

296

233

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“…L uminescent single-nanometer-sized diamond-like carbon particles have received considerable attention in biophysics, 1Ϫ3 material science, 3 nanomedicine, 4 and photonics. 5,6 Partly this is related to their extraordinary material properties, such as chemical inertness, biocompatibility, and hardness, and also partly due to their exceptional photostability.…”

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confidence: 99%

Fluorescence and Spin Properties of Defects in Single Digit Nanodiamonds

et al. 2009

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This article reports stable photoluminescence and high-contrast optically detected electron spin resonance (ODESR) from single nitrogen-vacancy (NV) defect centers created within ultrasmall, disperse nanodiamonds of radius less than 4 nm. Unexpectedly, the efficiency for the production of NV fluorescent defects by electron irradiation is found to be independent of the size of the nanocrystals. Fluorescence lifetime imaging shows lifetimes with a mean value of around 17 ns, only slightly longer than the bulk value of the defects. After proper surface cleaning, the dephasing times of the electron spin resonance in the nanocrystals approach values of some microseconds, which is typical for the type Ib diamond from which the nanoparticle is made. We conclude that despite the tiny size of these nanodiamonds the photoactive nitrogen-vacancy color centers retain their bulk properties to the benefit of numerous exciting potential applications in photonics, biomedical labeling, and imaging.

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Diamond Nanoparticles: Jewels for Chemistry and Physics

Cited by 272 publications

References 41 publications

Solar geoengineering using solid aerosol in the stratosphere

Solar geoengineering using solid aerosol in the stratosphere

Diamond Nanophotonics

Fluorescence and Spin Properties of Defects in Single Digit Nanodiamonds

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