Results 111 to 120 of about 742,236 (299)

Boosting the Energy Density of “Anode‐Free” Lithium Metal Batteries via Electrospun Polymeric Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
While host structures are known to enhance the reversibility and safety of lithium metal deposition, their additional volume and weight often decrease the battery's energy density and specific energy. By combining a lightweight and porous scaffold of electrospun polymer with a thinner separator, this article demonstrates a simultaneous improvement of ...
Lennart Wichmann   +6 more
wiley   +1 more source

High Dk piggyback contact lens system for contact lens-intolerant keratoconus patients

open access: yesClinical Ophthalmology, 2011
Tomris Sengor, Sevda Aydin Kurna, Suat Aki, Yelda ÖzkurtFatih Sultan Mehmet Training and Research Hospital, Istanbul, TurkeyBackground: The aim of the study was to examine the clinical success of high Dk (oxygen permeability) piggyback contact ...
Tomris Sengor   +3 more
doaj  

Natural pigments as multifunctional additives in contact lenses

open access: yesMaterials & Design
Continuous exposure to blue light emitting devices as part of modern life leads to melatonin suppression that results in poor sleep quality and overall health. Contact lenses capable of blue light filtering could be used to mitigate this issue.
C. Muhammed Shebeeb   +4 more
doaj   +1 more source

Comparison of Oxygen Flux in Hydrogel and Silicone Hydrogel Contact Lenses [PDF]

open access: yes, 2008
The prevalence of contact lens use has been continuously growing for their convenience and for cosmetic reasons. Although contact lenses do offer many advantages over glasses, the major concern for many contact lens users is dryness that results from a ...
Cho, Eun Ae   +2 more
core  

Self‐Assembled Heterosymmetric Structure with Tunable Polarization Optics for Reversible Matrix Encryption

open access: yesAdvanced Functional Materials, EarlyView.
Sustainable films with heterosymmetric structures, harmoniously integrating symmetry and asymmetry, are fabricated using cellulose nanocrystals and hydrophilic nanolignin via evaporation‐induced self‐assembly, which exhibit excellent multiple polarization optical properties.
Qun Song   +7 more
wiley   +1 more source

Gaussian‐Sigmoid Reinforcement Transistors: Resolving Exploration‐Exploitation Trade‐Off Through Gate Voltage‐Controlled Activation Functions

open access: yesAdvanced Functional Materials, EarlyView.
The characteristics of a vertical n–p–i–p heterostructure transistor device, which exhibits a voltage‐tunable transition between Gaussian and sigmoid functions, are investigated. The mixed state of the transfer curve enables the utilization of both exploitation and exploration, improving computational performance in reinforcement learning tasks ...
Jisoo Park   +7 more
wiley   +1 more source

Epitaxial Interface‐Driven Photoresponse Enhancement in Monolayer WS2–MoS2 Lateral Heterostructures

open access: yesAdvanced Functional Materials, EarlyView.
Surface potential distribution image, along with the derived electric field distribution across the interface, reveals that the electric field reaches its peak at the interface. Additionally, the spectral response of the heterointerface exhibits higher and broader features compared to its bare counterparts.
Pargam Vashishtha   +18 more
wiley   +1 more source

Kokeilisitko kovia? : opas kovien korneaalisten piilolinssien sovitukseen [PDF]

open access: yes, 2014
Opinnäytetyön tarkoituksena on tuottaa opas kovien sfääristen, korneaalisten happea läpäisevien (RGP) piilolinssien sovitukseen. Opas on tarkoitettu laillistettujen piilolinssioptikoiden ja silmälääkäreiden käyttöön. Aihe on ajankohtainen, koska nykyiset
Alho, Noora   +2 more
core  

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