Results 101 to 110 of about 138,992 (294)

Polar Pore Surface of Polyamide Membranes Enabling Efficient Solvent Mixture Separation

open access: yesAdvanced Functional Materials, EarlyView.
A polyamide membrane with polar pore surfaces and relatively large pore is fabricated through interfacial polymerization between polyethyleneimine and trimesoyl chloride. Rapid separation of solvents with polarity differences is achieved by the synergistic effects of pore polarity and size sieving.
Aiwen Zhang   +10 more
wiley   +1 more source

A Mathematical Model for Axial Length Estimation in a Myopic Pediatric Population Based on Easily Obtainable Variables

open access: yesPhotonics
Determining the axial length (AL) of the eye is of significant interest in the management of myopia. However, the devices that allow this value to be obtained are either expensive, for example, optical biometers, or inconvenient for use in pediatric ...
Veronica Noya-Padin   +5 more
doaj   +1 more source

Disulfide Glass: An Optical Polymer for Commodity Plastics, Precision Optics, and Photonics

open access: yesAdvanced Functional Materials, EarlyView.
From oil and glass refining to high performance commodity polymers with enhanced thermomechanical and optical properties—the synthesis of a new high refractive index, highly transparent optical thermoset polymer is reported, termed, disulfide glass that affords a robust optical glass amenable to fabrication of precision optics and thin film photonic ...
Jake Molineux   +15 more
wiley   +1 more source

Comment on ''Electromagnetic Surface Modes at Interfaces with Negative Refractive Index make a Non-Quite Perfect Lens'' [PDF]

open access: yesarXiv, 2002
Comment on ''Electromagnetic Surface Modes at Interfaces with Negative Refractive Index make a Non-Quite Perfect Lens''
arxiv  

Scaling‐Up of Structural Superlubricity: Challenges and Opportunities

open access: yesAdvanced Functional Materials, EarlyView.
At increasing length‐scales, structural superlubricity (SSL) faces challenges from physical and chemical energy dissipation pathways. This study reviews recent experimental and theoretical progress on these challenges facing the scaling‐up of SSL, as well as perspectives on future directions for realizing and manipulating macroscale superlubricity ...
Penghua Ying   +4 more
wiley   +1 more source

The effect of muzzle blast wave on light screen in external ballistic measurement

open access: yesFrontiers in Physics
IntroductionIn measuring initial velocity, light screen detectors (LSD) are positioned closer to the muzzle. The light screen of the LSD can be affected by the muzzle blast wave (MBW), resulting in an inaccurate initial velocity.MethodsA method for ...
Chenxi Duan   +4 more
doaj   +1 more source

Comment on "Total Negative Refraction in Real Crystals for Ballistic Electrons and Light" (Phys. Rev. Lett. 91, 157404 (2003)) [PDF]

open access: yesarXiv, 2003
Recently, Zhang et al. (Phys. Rev. Lett. 91, 157404 (2003)) have demonstrated that an amphoteric refraction, i. e. both positive and negative refraction, may prevail at the interface of two uniaxial anisotropic crystals when their optical axes are in different directions. The authors subsequently made a correspondence between such a refraction with the
arxiv  

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