Results 131 to 140 of about 1,906,714 (310)

4D–Printed Photothermally Actuated Soft Microgripper on an Optical Fiber Tip for Biomedical Applications

Advanced Materials Technologies, EarlyView.
In this study, we developed a light–driven soft microgripper by 3D–printing a photo–crosslinkable, temperature–responsive hydrogel with embedded silver particles onto an optical fiber tip. The microgripper actuates via photothermal effects at cell culture temperature and can gently grasp spheroids without minimal damage, offering a compact, actuator ...
Shogo Oishi, Masaru Mukai, Yukihito Moritoki, Chisato Handa, Yuta Sato, Hiroki Miyajima, Kazutoshi Iijima, Shoji Maruo   +7 more
wiley   +1 more source

Deposition of Triglyceride on Soft Contact Lenses from Lipid-Containing Artificial Tears

Siriraj Medical Journal, 2016
Objective: To determine the amount of triglyceride deposition from a lipid-containing artificial tear eye drop (Endura® ) on three different types of contact lenses after one day and one month of simulated use.
Atiporn Thuangtong, Daroonporn Lertpongparkpoom, Chatchawan Srisawat, Sarawut Junnu, Busadee Pratumvinit   +4 more
doaj   +2 more sources

Regular replacement of rigid contact lenses alleviates binding to the cornea

, 1996
The binding of rigid contact lenses to the cornea is a phenomenon that is poorly understood. A variety of strategies have been advocated for the resolution of this problem.
Efron, Nathan, Woods, Craig A.
core  

Optimising the thickness-water content relationship for hydrogel lenses [PDF]

, 1987
A model that can be used to estimate the optimum water content thickness relationship for a hydrogel contact lens of a given power is presented. The model Is based on estimates of the minimum practical center thickness to which hydrogel lenses may ...
Carney, Leo G., Brennan, Noel A.
core  

Angled Nozzle Aerosol Jet Printing to Streamline Conformal Patterning of Electronics

Advanced Materials Technologies, EarlyView.
A modular, angled aerosol jet printhead is demonstrated to streamline patterning on nonplanar surfaces, including 90° step edges and confined internal geometries. A detailed analysis of gravitational settling for a sheathed aerosol flow and deconvolution of oblique deposition and gravitational effects supports the versatility of this approach for ...
Louis O. Morgan, Jeremy D. Rurup, Hal K. Griswold, Md Ramjan Ali, Ethan B. Secor   +4 more
wiley   +1 more source

Models of Oxygen Performance for the Static, Dynamic and Closed-Lid Wear of Hydrogel Contact Lenses [PDF]

, 1981
Contact lens can restrict the amount of oxygen available to the cornea, often resulting in corneal oedema and visual dysfunction. Predictions of the likely physiological response of the cornea to contact lens wear can be facilitated by developing models ...
Carney, Leo G., Efron, Nathan
core  

Self‐Sealing Microneedles Improve Precision and Reduce Reflux in Subretinal Cell Transplantation

Advanced Materials Technologies, EarlyView.
Ultrafine 49G microneedles enable subretinal delivery of induced pluripotent stem cell‐derived retinal pigment epithelial cells through a 50 µm outer diameter tip. Compared with conventional 38G microcannulas, these microneedles reduce cell suspension reflux in a rabbit model, highlighting the potential of microinvasive delivery instruments to improve ...
Jared Ching, Hinako Ichikawa, Aya Motoyoshi, Shin Tanaka, Liam Morrow, Satoshi Shirae, Noriko Sakai, Shohei Kitahata, Michiko Mandai, Kazuaki Kadonosono   +9 more
wiley   +1 more source

Dynamic Fluorescence Modulation via Light‐Driven Competitive Protonation

Advanced Optical Materials, EarlyView.
A two‐component molecular system demonstrates reversible, light‐driven fluorescence write–erase cycling and thermal imaging. Illumination of a merocyanine photoacid transfers a proton to a highly efficient fluorescent pyridinium dye, switching its emission color; thermal relaxation reverses the process in the dark.
Serena X. Liu, Moritz E. Kleybolte, Colin van Dyck, Sergey I. Vagin, Preeti Gahtori, Antonio Scarpati, Razieh Firouzihaji, Diogo A. Galico, Ulrich S. Schubert, Julianne Gibbs, Alkiviathes Meldrum   +10 more
wiley   +1 more source

Masking of irregular corneal topography with contact lenses

, 1998
PURPOSE: We examined the effectiveness of various types of contact lenses in masking irregular corneal topography using videokeratoscopy, residual aberrations, and measurement of visual acuity.
Griffiths, Monique, Carney, Leo G., Collins, Michael J., Zahner, Kylie   +3 more
core  

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

Advanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio, Giulio Carotta, Lorenzo Lavista, Andrea Camposeo, Giacomo Venturi, Agnese Guernieri, Alessandro Pitanti, Simon A. R. Horsley, Giuseppe C. La Rocca, Alessandro Tredicucci, Simone Zanotto   +10 more
wiley   +1 more source