Results 21 to 30 of about 161,960 (313)

Recent advance of lanthanide luminescent materials in biological imaging

open access: yes上海师范大学学报. 自然科学版, 2021
Due to the special structure of 4f electron layer, lanthanides have excellent spectral characteristics, such as sharp linear bands and relatively long excited state lifetime, which greatly improves their optical imaging performance and makes them a new ...
LI Mengmeng, JIAO Jingjing, YANG Shiping
doaj   +1 more source

Structural and optical properties of HDPE implanted with medium fluences silver ions [PDF]

open access: yesScience of Sintering, 2021
The implantation of high-density polyethylene (HDPE) has been conducted using Ag+ ions with energy of 60 keV, achieved fluences 1.5 and 10•1015 ions/cm2.
Nenadović Miloš   +4 more
doaj   +1 more source

Nanodiamond Landmarks for Subcellular Multimodal Optical and Electron Imaging [PDF]

open access: yesScientific Reports, 2013
There is a growing need for biolabels that can be used in both optical and electron microscopies, are non-cytotoxic, and do not photobleach. Such biolabels could enable targeted nanoscale imaging of sub-cellular structures, and help to establish correlations between conjugation-delivered biomolecules and function.
Zurbuchen, Mark A   +4 more
openaire   +5 more sources

Observations of omega bands using an imaging riometer. [PDF]

open access: yes, 2009
We present a case study of an omega band cur- rent system from 11 May 1998 using data from the Imaging Riometer for Ionospheric Studies (IRIS) in Finland. For the first time, images of a substorm-related omega band in cos- mic noise absorption are shown.
Wild, J.A.   +5 more
core   +1 more source

Observations of artificial and natural optical emissions at the HAARP facility [PDF]

open access: yes, 2008
Extensive optical observations have been carried out at the High Frequency Active Auroral Research Program (HAARP) ionospheric heating facility since it began operations in 1999.
T. Pedersen   +13 more
core   +1 more source

Study of auroral forms and electron precipitation with the IRIS, DASI and EISCAT systems [PDF]

open access: yes, 2002
International audienceSimultaneous observations with the IRIS, DASI and EISCAT systems are employed in the study of the spatial distribution and temporal evolution of auroral forms and precipitation regions during substorm activity.
del Pozo, C. F.   +7 more
core   +1 more source

Multiple Bioimaging Applications Based on the Excellent Properties of Nanodiamond: A Review

open access: yesMolecules, 2023
Nanodiamonds (NDs) are emerging as a promising candidate for multimodal bioimaging on account of their optical and spectroscopic properties. NDs are extensively utilized for bioimaging probes due to their defects and admixtures in their crystal lattice ...
Xinyue Wang   +6 more
doaj   +1 more source

Integrating electron and near-field optics: dual vision for the nanoworld

open access: yesNanophotonics, 2014
The integration of near-field scanning optical microscopy (NSOM) with the imaging and localized excitation capabilities of electrons in a scanning electron microscope (SEM) offers new capabilities for the observation of highly resolved transport ...
Haegel Nancy M.
doaj   +1 more source

WAMDII: wide-angle Michelson Doppler imaging interferometer for Spacelab [PDF]

open access: yes, 1985
A wide-angle Michelson Doppler imaging interferometer (WAMDII) is described that is intended to measure upper atmospheric winds and temperatures from naturally occurring visible region emissions, using Spacelab as a platform.
Gault, W.A.   +8 more
core   +1 more source

All-optical three-dimensional electron pulse compression

open access: yesNew Journal of Physics, 2015
We propose an all-optical, three-dimensional electron pulse compression scheme in which Hermite–Gaussian optical modes are used to fashion a three-dimensional optical trap in the electron pulse’s rest frame.
Liang Jie Wong   +4 more
doaj   +1 more source

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