Results 71 to 80 of about 3,249,101 (332)

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Casimir stress in and force on a metal slab in a planar cavity

open access: yes, 2009
Emphasizing first the utility of the generalized Fresnel coefficients in the theory of the Casimir effect in planar cavities, we complement our previous discussion of the ordinary Casimir force on and the Casimir stress in a metal (plasma) slab in a ...
Lenac, Zdravko, Tomas, Marin-Slobodan
core   +1 more source

Goos-Hänchen shift for a rough metallic mirror

open access: yesOptics Express, 2009
We investigate experimentally the dependence of the Goos-Hänchen shift on the surface properties of an air-metal interface. The shift depends on the microscopic roughness of the metal surface but it is insensitive to the large-scale variations associated with surface non-flatness. Both an effective medium model of roughness and the Rayleigh-Rice theory
MERANO, MICHELE   +4 more
openaire   +4 more sources

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Plasmonic reflectors and high-Q nano-cavities based on coupled metal-insulator-metal waveguides

open access: yesAIP Advances, 2012
Based on the contra-directional coupling, a composite structure consisting of two coupled metal-insulator-metal (MIM) waveguides is proposed to act as an attractive plasmonic reflector. By introducing a defect into one of the MIM waveguides, we show that
Jing Chen   +5 more
doaj   +1 more source

Polarization-maintaining reflection-mode THz time-domain spectroscopy of a polyimide based ultra-thin narrow-band metamaterial absorber [PDF]

open access: yes, 2018
This paper reports the design, the microfabrication and the experimental characterization of an ultra-thin narrow-band metamaterial absorber at terahertz frequencies.
Astorino, Maria Denise   +8 more
core   +2 more sources

Characterisation of metal mirrors on GaAs

open access: yesElectronics Letters, 1996
The authors describe a Fabry-Perot technique for determining the reflectivity and the phase of the interface between semiconductor and a multilayer metal structure as it will be realised in actual device fabrication. The reflection coefficients of GaAs to Ti/Au, Pd/Au, Au and Ag interfaces are measured at 1.55 /spl mu/m.
Babić, Dubravko I.   +3 more
openaire   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo   +4 more
wiley   +1 more source

Research on Metal Mesh Coupling Mirrors Utilizing Metasurfaces for Optically Pumped Gas THz Lasers

open access: yesPhotonics
Optically pumped gas terahertz (THz) lasers (OPGTLs) as reliable sources of THz radiation have been extensively utilized within THz application areas. In this paper, a substrate-free metal mesh coupler based on the metasurfaces principle was designed for
Lijie Geng   +7 more
doaj   +1 more source

A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations [PDF]

open access: yes, 2006
We present a new class of magnetically shaped deformable liquid mirrors made of a magnetic liquid (ferrofluid). Deformable liquid mirrors offer advantages with respect to deformable solid mirrors: large deformations, low costs and the possibility of very
Anna Ritcey   +4 more
core   +2 more sources

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