Results 131 to 140 of about 200,462 (294)

Tunable 3D‐Printed Static Mixers for Gradient Bioprinting With High Cell Viability

open access: yesAdvanced Materials Technologies, EarlyView.
ABSTRACT The fabrication of native tissue‐like structures with gradual transitions in material properties, cell types, and growth factors remains a major challenge in biofabrication due to the lack of suitable methods. Mimicking the hierarchical organization of living tissues is essential for functional models, yet creating gradient, multimaterial ...
Florian Hofmann   +9 more
wiley   +1 more source

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

open access: yesAdvanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik   +6 more
wiley   +1 more source

Authors’ response: is pupil diameter influenced by refractive error? [PDF]

open access: yes, 2015
Armstrong   +5 more
core   +1 more source

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

open access: yesAdvanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee   +4 more
wiley   +1 more source

ERRORS OF REFRACTION

open access: yesThe Indian medical gazette
A short revision presentation on Errors Of Refraction conducted for the students of DOW medical college. This presentation includes transitions and animations to make it more appealing for the presenter. It was tutorial, hence, only relevant information has been added. There are a few MCQs at the end to assess the knowledge. 
openaire   +4 more sources

Turn Broad Into Narrow: Understanding the Pr3+ → Gd3+ Energy Transfer in Cs2NaYCl6

open access: yesAdvanced Optical Materials, EarlyView.
The energy transfer processes of Pr3+ in elpasolite‐like Cs2NaY1‐xGdxCl6: 1mol%$1 \,\mathrm{mol}\%$ Pr3+ is investigated by steady‐state and time‐resolved spectroscopy. An analysis of the multiexponential decays in the framework of the shell model of energy transfer suggests an occupation of both the Y and Na sites by Pr3+ in this host.
Tom Förster   +5 more
wiley   +1 more source

Surgical correction of refractive errors [PDF]

open access: yesJournal of the Royal Society of Medicine, 2000
A, Brahma, C N, McGhee
openaire   +3 more sources

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

open access: yesAdvanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna   +4 more
wiley   +1 more source

Training to meet the need for refractive error services

open access: yesCommunity Eye Health Journal, 2007
In many low- and middle-income countries, there are inadequate refractive error services for the many people who are currently either blind or visually impaired because they lack a pair of spectacles.The prioritisation of refractive error and low vision ...
Hannah Faal, M Babar Qureshi
doaj  

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