scholarly journals High-contrast imaging of 180° ferroelectric domains by optical microscopy using ferroelectric liquid crystals

2020 ◽  
Vol 116 (21) ◽  
pp. 212901
Author(s):  
Guillaume. F. Nataf ◽  
Mael Guennou ◽  
Giusy Scalia ◽  
Xavier Moya ◽  
Tim D. Wilkinson ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Optical Microscopy ◽  
High Contrast ◽  
Contrast Imaging ◽  
Ferroelectric Liquid Crystals ◽  
High Contrast Imaging ◽  
Ferroelectric Domains

The CM120 Biotwin: a high-contrast objective lens, optimum cryo-vacuum and improved EDX performance

1995 ◽  
Vol 53 ◽  
pp. 584-585
Author(s):  
Uwe Lücken ◽  
Michael Felsmann ◽  
Wim M. Busing ◽  
Frank de Jong
Keyword(s):  
Life Science ◽  
Focal Length ◽  
Objective Lens ◽  
High Contrast ◽  
Contrast Imaging ◽  
X Ray ◽  
Forming Mechanism ◽  
Similar Image ◽  
High Contrast Imaging ◽  
Low Concentrations

A new microscope for the study of life science specimen has been developed. Special attention has been given to the problems of unstained samples, cryo-specimens and x-ray analysis at low concentrations.A new objective lens with a Cs of 6.2 mm and a focal length of 5.9 mm for high-contrast imaging has been developed. The contrast of a TWIN lens (f = 2.8 mm, Cs = 2 mm) and the BioTWTN are compared at the level of mean and SD of slow scan CCD images. Figure 1a shows 500 +/- 150 and Fig. 1b only 500 +/- 40 counts/pixel. The contrast-forming mechanism for amplitude contrast is dependent on the wavelength, the objective aperture and the focal length. For similar image conditions (same voltage, same objective aperture) the BioTWIN shows more than double the contrast of the TWIN lens. For phasecontrast specimens (like thin frozen-hydrated films) the contrast at Scherzer focus is approximately proportional to the √ Cs.

scholarly journals Anti-quenching NIR-II molecular fluorophores for in vivo high-contrast imaging and pH sensing

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Shangfeng Wang ◽  
Yong Fan ◽  
Dandan Li ◽  
Caixia Sun ◽  
Zuhai Lei ◽  
...  
Keyword(s):  
Ph Sensing ◽  
High Contrast ◽  
Contrast Imaging ◽  
High Contrast Imaging

Simulations of exoplanets detection obtained with a high-contrast imaging instrument: CHEOPS

2004 ◽  
Author(s):  
Alessandro Berton ◽  
Raffaele G. Gratton ◽  
Markus Feldt ◽  
Silvano Desidera ◽  
Elena Masciadri ◽  
...  
Keyword(s):  
High Contrast ◽  
Contrast Imaging ◽  
High Contrast Imaging ◽  
Imaging Instrument

Laboratory test of a polarimetry imaging subtraction system for the high-contrast imaging

2012 ◽  
Author(s):  
Jiangpei Dou ◽  
Deqing Ren ◽  
Yongtian Zhu ◽  
Xi Zhang ◽  
Rong Li
Keyword(s):  
Laboratory Test ◽  
High Contrast ◽  
Contrast Imaging ◽  
High Contrast Imaging

Technological progress of a ferrofluid deformable mirror with tunable nominal optical power for high-contrast imaging

2015 ◽  
Author(s):  
Aaron J. Lemmer ◽  
Tyler D. Groff ◽  
N. Jeremy Kasdin ◽  
Daniel Echeverri ◽  
Isabel R. Cleff
Keyword(s):  
Technological Progress ◽  
Optical Power ◽  
Deformable Mirror ◽  
High Contrast ◽  
Contrast Imaging ◽  
High Contrast Imaging

Enabling high-contrast imaging of binary stars with the Roman Space Telescope Coronagraph Instrument

2021 ◽  
Author(s):  
Eduardo Bendek ◽  
Ruslan Belikov ◽  
Dan Sirbu ◽  
Garreth Ruane ◽  
A. J. Eldorado Riggs ◽  
...  
Keyword(s):  
Binary Stars ◽  
High Contrast ◽  
Contrast Imaging ◽  
Space Telescope ◽  
High Contrast Imaging
Sign in / Sign up

Export Citation Format

Share Document