Biomineralisation in the Palaeozoic oceans: evidence for simultaneous crystallisation of high and low magnesium calcite by phacopine trilobites [PDF]
, 2012 The chemical composition and microstructure of the calcite cuticles of eleven species of phacopine trilobites have been investigated by electron beam imaging, diffraction, and microanalysis, and results reveal that the lenses of their schizochroal eyes ...
Alan W. Owen +42 more
core +1 more source
Photoaligning and Photopatterning: New LC Technology
Crystals, 2020 We demonstrate a physical model of photoalignment and photopatterning based on rotational diffusion in solid azo-dye nanolayers. We also highlight the new applications of photoalignment and photopatterning in display and photonics such as: (i) liquid ...
Vladimir Chigrinov +2 more
doaj +1 more source
Strain‐Multiplex Metalens Array for Tunable Focusing and Imaging
Advanced Science, 2021 Metalenses on a flexible template are engineered metal‐dielectric interfaces that improve conventional imaging system and offer dynamic focusing and zooming capabilities by controlling the focal length and bandwidth through a mechanical or external ...
Rajib Ahmed, Haider Butt
doaj +1 more source
Insight into small eyes: a practical description from phenotypes presentations to the management [PDF]
International Journal of OphthalmologyThis narrative review aimed to have an algorithmic approach to microphthalmos by a systematic search. The definition can be related to a number of special phenotypes.
Sana Niazi +4 more
doaj +1 more source
A 3D controllable diffraction‐limited spot array generated by means of a spaced‐dipole array
IET Optoelectronics, 2022 The creation of an array of three‐dimensional (3D) multifocal spots in the focal region has attracted interest due to potential applications in parallel or simultaneous process areas.
Yanzhong Yu +5 more
doaj +1 more source
Is it a coloboma or not? A new definition for isolated lens coloboma: focal zonular dysgenesis
The Pan-American Journal of Ophthalmology, 2023 Purpose: Ocular coloboma is defined as a congenital malformation caused by defective closure of the fetal fissure, resulting in a notch in any structure.
Nicole B Larivoir +5 more
doaj +1 more source
Finding Strong Gravitational Lenses in the Kilo Degree Survey with Convolutional Neural Networks [PDF]
, 2017 The volume of data that will be produced by new-generation surveys requires automatic classification methods to select and analyze sources. Indeed, this is the case for the search for strong gravitational lenses, where the population of the detectable ...
Chatterjee, S. +10 more
core +3 more sources
Delta lenses as coalgebras for a comonad [PDF]
CEUR Workshop Proceedings, Vol. 2999, 2021, pp 18-27, 2021 Delta lenses are a kind of morphism between categories which are used to model bidirectional transformations between systems. Classical state-based lenses, also known as very well-behaved lenses, are both algebras for a monad and coalgebras for a comonad.
arxiv
Gradient index phononic crystals and metamaterials
Nanophotonics, 2019 Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation.
Jin Yabin +2 more
doaj +1 more source