Results 231 to 240 of about 3,261,865 (370)

Synthetic Chromatophores for Color and Pattern Morphing Skins

open access: yesAdvanced Materials, EarlyView.
Cephalopods use chromatophore organs (muscle‐actuated pigment sacs) to alter their skin color and pattern. Synthetic chromatophores, which closely mimic the mechano‐optical process found in cephalopods using stimuli‐responsive microscale hydrogel actuators, are reported.
Brennan P. Watts   +5 more
wiley   +1 more source

Effective cataract surgical and refractive error coverages in the state of Qatar. [PDF]

open access: yesBMC Ophthalmol
AlAshwal SM   +7 more
europepmc   +1 more source

Monolithic Terahertz Topological Mach‐Zehnder Interferometer

open access: yesAdvanced Materials, EarlyView.
A monolithic topological Mach‐Zehnder interferometer (MZI) is presented, integrating the splitter, combiner, and waveguide arms on a single chip. The interferometric fringes exhibiting high on‐off contrast with extinction ratios over 20 dB are achieved by utilizing tailored unit cells that facilitate interface‐dependent out‐of‐plane radiation losses ...
Nikhil Navaratna   +3 more
wiley   +1 more source

Triboelectric Nanogenerators Enable Multifunctional Ice Accretion, Melting, and Interfacial Fracture Detection

open access: yesAdvanced Materials, EarlyView.
Water impacting, freezing, melting, and being mechanically removed from the designed dielectric surfaces generates a triboeletric signal that can be used to detect various icing and de‐icing scenarios. The charge transferred directly scales with the interfacial fracture mechanism, further validating triboelectricity as an excellent ice‐detection ...
Kamran Alasvand Zarasvand   +12 more
wiley   +1 more source

Refractive Error and Axial Length (REAL) Study: Feasibility of a population study in the United States. [PDF]

open access: yesOptom Vis Sci
Singh SE   +10 more
europepmc   +1 more source

The Effect of Age, Accommodation, and Refractive Error on the Adult Human Eye

open access: yesOptometry and Vision Science, 2016
K. Richdale   +3 more
semanticscholar   +1 more source

Stimuli‐Responsive Materials for Biomedical Applications

open access: yesAdvanced Materials, EarlyView.
Stimulus‐responsive materials (SRMs) hold great promise for use in a wide range of biomedical applications. This review covers four stimulus modalities, namely, electrical, optical, magnetic, and ultrasound, and their associated SRMs. It provides a summary of the materials in each modality, their development, and current research perspectives.
Adriana Teixeira do Nascimento   +8 more
wiley   +1 more source

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