Results 21 to 30 of about 58,854 (258)
Anamorphic zoom system based on liquid crystal displays [PDF]
Journal of the European Optical Society-Rapid Publications, 2009 In this work we present an anamorphic zoom system, based on liquid crystal displays, which allows changing the magnification and distortion of an image very quickly, without mechanical parts and keeping the output plane stationary.
Iemmi Claudio, Campos Juan
doaj +1 more source
Active Optics in Astronomy: Freeform Mirror for the MESSIER Telescope Proposal
Mathematical and Computational Applications, 2018 Active optics techniques in astronomy provide high imaging quality. This paper is dedicated to highly deformable active optics that can generate non-axisymmetric aspheric surfaces—or freeform surfaces—by use of a minimum number of actuators ...
Gerard Rene Lemaitre +2 more
doaj +1 more source
Optical Activation of TrkA Signaling [PDF]
ACS Synthetic Biology, 2018 Abstract Nerve growth factor/tropomyosin receptor kinase A (NGF/TrkA) signaling plays a key role in neuronal development, function, survival, and growth. The pathway is implicated in neurodegenerative disorders including Alzheimer’s disease, chronic pain, inflammation, and cancer. NGF binds the extracellular domain of
Liting Duan +7 more
openaire +3 more sources
Advances in Meta-Optics and Metasurfaces: Fundamentals and Applications
Nanomaterials, 2023 Meta-optics based on metasurfaces that interact strongly with light has been an active area of research in recent years. The development of meta-optics has always been driven by human’s pursuits of the ultimate miniaturization of optical elements, on ...
Kai Ou +9 more
doaj +1 more source
The Development and Progression of Micro-Nano Optics
Frontiers in Chemistry, 2022 Micro-Nano optics is one of the most active frontiers in the current development of optics. It combines the cutting-edge achievements of photonics and nanotechnology, which can realize many brand-new functions on the basis of local electromagnetic ...
Yong Wang +32 more
doaj +1 more source
Optical Gain of Vertically Coupled Cd0.6Zn0.4Te/ZnTe Quantum Dots
Nanomaterials, 2023 The optical modal gain of Cd0.6Zn0.4Te/ZnTe double quantum dots was measured using a variable stripe length method, where large and small quantum dots are separated with a ZnTe layer.
Ming Mei +6 more
doaj +1 more source
Frequency Standards and Metrology, 2009 This letter presents the principles and techniques of active optical clock, a special laser combining the laser physics of one-atom laser, bad-cavity gas laser, super-cavity stabilized laser and optical atomic clock. As an example, a compact version of active optical clock based on thermal Strontium atomic beam shows a quantum-limited linewidth of 0.51
openaire +2 more sources
Journal of the Mechanical Behavior of Materials, 2018 Active optics techniques on large telescopes and astronomical instrumentations provide high imaging quality. For ground-based astronomy, the co-addition of adaptive optics again increases angular resolution up to providing diffraction-limited imaging at ...
Lemaitre Gérard Rene
doaj +1 more source
Stimuli‐responsive active materials for dynamic control of light field
Responsive Materials, 2023 The increasing demand for the multidimensional and dynamic control of light has spurred the development of stimuli‐responsive, reconfigurable, and programmable optical systems.
Ren Zheng +7 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei +17 more
wiley +1 more source