Results 101 to 110 of about 466,694 (308)

Enhancing AIS to Improve Whale-Ship Collision Avoidance and Maritime Security [PDF]

open access: yes, 2009
Whale-ship strikes are of growing worldwide concern due to the steady growth of commercial shipping. Improving the current situation involves the creation of a communication capability allowing whale position information to be estimated and exchanged ...
Fall, Kevin   +2 more
core   +2 more sources

Responsive Visible‐Wavelength Metasurfaces from Porous Silicon Based on Fano Guided‐Mode Resonance

open access: yesAdvanced Optical Materials, EarlyView.
The article introduces mesoporous silicon metasurfaces (pSi‐MS) supporting Fano guided‐mode resonances in the visible regime. By combining top‐down lithographic patterning of 2D gratings with bottom‐up electrochemical porosification, the approach realizes a new class of responsive metasurfaces, enabling highly sensitive and portable platforms for small
Tomoshree Dash   +4 more
wiley   +1 more source

3D Microprinting of Structures with Lanthanide‐Based Fluorophores on Optical Fibers for Multiplexed Sensing

open access: yesAdvanced Optical Materials, EarlyView.
Incorporating lanthanide‐based fluorophores into commercial resists for femtosecond direct laser writing enables a novel platform for multiplexed sensing. Porous, periodic, and solid luminescent microstructures fabricated directly on optical fiber tips are presented.
Valese Aslani   +8 more
wiley   +1 more source

Carting Away the Oceans 9 [PDF]

open access: yes, 2015
The Carting Away the Oceans report, released annually since 2008, identifies which major grocery chains are leaders in sustainable seafood and which are falling behind.The findings are telling.In the latest update, Whole Foods, Wegmans, Hy-Vee, and ...

core  

Vat Photopolymerized HEMA/HEA Hydrogels for Solvent‐Responsive Transparency and Optical Encryption

open access: yesAdvanced Optical Materials, EarlyView.
Vat‐photopolymerized HEMA/HEA hydrogels exhibit reversible transparency‐opacity switching via hydration‐induced microphase separation and solvent exchange. The printed materials enable hydration sensing, optical encryption, and information storage, while maintaining high ductility and reversible rheology.
Murad Ali   +4 more
wiley   +1 more source

Electroluminescence and Franz–Keldysh Modulation Observed in Sn/Ge Multi‐Quantum Wells

open access: yesAdvanced Optical Materials, EarlyView.
We investigate the optoelectronic properties of PIN diodes based on ultrathin α‐Sn/Ge multiple quantum film structures, fabricated by molecular beam epitaxy, both experimentally and theoretically. The samples exhibit a light emission spectrum in the short‐wavelength infrared range with two transitions. Furthermore, when operating as a photodetector, we
Michael Oehme   +9 more
wiley   +1 more source

Applications of ISES for the oceans [PDF]

open access: yes
The need in oceanography for direct broadcast, why, and what type are discussed. Four reasons for support exist: need for real-time observations in support of field studies; need to back up point failures; need for experimentation with onboard processing
Esaias, W. E.
core   +1 more source

People and Oceans: Managing Marine Areas for Human Well-Being [PDF]

open access: yes, 2011
This booklet demonstrates an awakening within the conservation community that the human relationship with coastal and ocean environments must be evaluated in cultural, social, and economic -- as well as ecological -- dimensions.
Giselle Samonte   +2 more
core  

Tunable Multifunctional Terahertz Coding Metasurface for Polarization Manipulation

open access: yesAdvanced Photonics Research, EarlyView.
Coding metasurfaces (CMs) offer versatile control over electromagnetic waves. Herein, a tunable multifunctional terahertz (THz) metasurface integrated with vanadium dioxide (VO2) is presented, enabling propagation‐phase manipulation of linearly polarized waves and hybrid‐phase control of circularly polarized waves.
Chunsheng Zhang   +10 more
wiley   +1 more source

What the sea portends: a reconsideration of contested island tropes [PDF]

open access: yesIsland Studies Journal, 2013
This paper argues for a shift in the focus of island-themed scholarship away from theories of islandness toward an engagement with psychologies of island experience. The former project has become mired in intractable dilemmas.
Pete Hay
doaj  

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