Results 41 to 50 of about 16,325 (263)
Towards controlled Fizeau observations with the Large Binocular Telescope
, 2018 The Large Binocular Telescope Interferometer (LBTI) can perform Fizeau interferometry in the focal plane, which accesses spatial information out to the LBT's full 22.7-m edge-to-edge baseline.
Defrere +10 more
core +1 more source
In-plane effects on segmented-mirror control [PDF]
, 2012 Extremely large optical telescopes are being designed with primary mirrors composed of hundreds of segments. The “out-of-plane” piston, tip, and tilt degrees of freedom of each segment are actively controlled using feedback from relative height ...
Bonnet, Henty +4 more
core +1 more source
Advanced Functional Materials, EarlyView.Reprogrammable multi‐material smart textiles knitted from liquid crystal elastomer fibers undergo 2D and 3D deformation under thermal and photo stimuli. Circularly knitted tubular structures reversibly contract in radial and axial directions, enabling autonomous climbing, liquid release, and micro pumping.
Xue Wan +8 more
wiley +1 more source
The Astronomical JournalThe upcoming 10 m class large Indian telescope is proposed to be built using segmented mirror technology. To achieve diffraction-limited image quality with a segmented mirror telescope, it is important to phase mirror segments with very high precision ...
Radhika Dharmadhikari, Padmakar Parihar
doaj +1 more source
Optically actuated two position mechanical mover [PDF]
, 1974 An optically actuated mechanical mover adapted to be moved from an ambient position to an active position, is disclosed. The mechanical mover essentially comprises a piston/cylinder arrangement including a piston that is contained within an internal ...
Murphy, A. J., Yang, L. C.
core +1 more source
Analytical expressions for optimum alignment modes of highly segmented mirrors
, 2004 The major sources causing deterioration of optical quality in extremely large optical telescopes are misadjustments of the mirrors, deformations of monolithic mirrors, and misalignments of segments in segmented mirrors. For active optics corrections, all
Cantrill CD, L. Noethe, Troy M
core +1 more source
Novel method for the measurement of liquid film thickness during fuel spray impingement on surfaces [PDF]
, 2016 This paper describes the development and application of a novel optical technique for the measurement of liquid film thickness formed on surfaces during the impingement of automotive fuel sprays.
Beyrau, F +3 more
core +1 more source
Bioprinting Organs—Science or Fiction?—A Review From Students to Students
Advanced Healthcare Materials, EarlyView.Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu +18 more
wiley +1 more source
Large amplitude tip/tilt estimation by geometric diversity for multiple-aperture telescopes
, 2017 A novel method nicknamed ELASTIC is proposed for the alignment of multiple-aperture telescopes, in particular segmented telescopes. It only needs the acquisition of two diversity images of an unresolved source, and is based on the computation of a ...
Cassaing, F. +2 more
core +1 more source
Laser‐Assisted Processing and Modification of Bioactive Glasses: A Review
Advanced Healthcare Materials, EarlyView.Laser technologies provide powerful tools to process and transform bioactive glasses for advanced biomedical applications. This review discusses laser‐matter interaction mechanisms, laser surface engineering, and laser‐assisted fabrication of scaffolds and nanofibers.
Antonio Riveiro +8 more
wiley +1 more source