Results 171 to 180 of about 1,330,345 (344)

High‐Numerical‐Aperture, 3D‐Printed All‐Dielectric Harmonic Diffraction Metalens in the Sub‐THz Frequency Range

open access: yesAdvanced Photonics Research, EarlyView.
Herein, a compact all‐dielectric metalens operating at dual sub‐THz frequencies is presented, addressing key challenges in terahertz device miniaturization. Utilizing commercial 3D printing, the metalens achieves high numerical aperture and broadband functionality.
Kobi Ben Atar   +2 more
wiley   +1 more source

Advances in Mode (De)Multiplexing Technologies via Circularly Symmetric Structured Light Beams

open access: yesAdvanced Photonics Research, EarlyView.
This review presents a comprehensive overview of mode (de)multiplexing technologies using circularly symmetric structured light beams, encompassing strategies of beam splitter combinations, multiorder diffractive gratings, optical coordinate transformations, angular dispersion lenses, multilayer cascaded modulations, and multidimensional hybrid (de ...
Qingji Zeng   +7 more
wiley   +1 more source

A design methodology based upon symbolic layout and integrated cad tools [PDF]

open access: bronze, 1982
A. M. Beyls   +4 more
openalex   +1 more source

Poka: A Necro‐Robot Beetle with a Measured Payload Ratio of 6847%

open access: yesAdvanced Robotics Research, EarlyView.
Here, Poka, a necro‐robot beetle with the ability to carry more than 68 times its own weight, is introduced, making it also a walking robot with the highest payload ratio measured to date. This paper is concerned with the design, manufacture and validation of ‘Poka', a novel millimetre‐scale necro‐robot aimed at bridging the performance gap between ...
Yordan Tsvetkov, Parvez Alam
wiley   +1 more source

Tides of Change in the Andaman and Nicobar Islands

open access: yesEcology, Economy and Society – The INSEE Journal, 2019
Meera Anna Oommen , Madhuri Ramesh
doaj   +1 more source

Nurses' perceptions of the layout and environment of the paediatric intensive care unit in terms of sleep promotion. [PDF]

open access: yesNurs Crit Care
Nenningsland TS   +5 more
europepmc   +1 more source

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