Results 181 to 190 of about 5,242,931 (310)

Massively Degenerate Coherent Perfect Absorption in Gradient‐Index Fibers

open access: yesAdvanced Optical Materials, EarlyView.
A coherent perfect absorber (CPA) normally operates for only one or very few spatial modes. The CPA proposed here uses a gradient‐index (GRIN) fiber to absorb hundreds of spatial modes at once, its self‐imaging property replacing the bulky free‐space degenerate cavity of earlier designs. An analytic criterion sets how much modal degeneracy is required,
Helmut Hörner   +2 more
wiley   +1 more source

Miscellaneous sketchbook, 2 [picture] /

open access: yes, 1930
Title devised by cataloguer from acquisitions documentation.; Part of the John Power sketchbooks collection.; Condition: Yellowing, soiled, stained, tears.; Also available online at: http://nla.gov.au/nla.pic-vn6293848; Exhibited: Abstraction-Creation: J.
Power, J. J. W. (John Joseph Wardell), 1881-1943.
core  

Purely Equatorial Lasing in Spherical Liquid Crystal Polymer Microlasers with Bipolar Refractive Index Profile

open access: yesAdvanced Optical Materials, EarlyView.
Spherical liquid crystal polymer microlasers with a bipolar configuration confine lasing to a single equatorial plane, allowing precise control over where the laser emission is generated. The anisotropic refractive index profile additionally lifts the energy degeneracy of azimuthal whispering gallery modes, which causes a characteristic splitting into ...
David Ripp   +5 more
wiley   +1 more source

Norfolk sketchbook [picture] /

open access: yes, 1930
Title devised by cataloguer.; Part of the John Power sketchbooks collection.; Inscriptions: "Norfolk"--In pencil on front cover.; Condition: Yellowing, soiled, stained.; Also available online at: http://nla.gov.au/nla.pic-vn6292751; Exhibited ...
Power, J. J. W. (John Joseph Wardell), 1881-1943.
core  

Generative AI-Enabled Discovery and Experimental Demonstration of Ultra-Broadband Epsilon-Near-Zero Perfect Absorbers. [PDF]

open access: yesAdv Sci (Weinh)
Dang D   +10 more
europepmc   +1 more source

Soft Robotic Excretory Care Simulator for Nursing Education: Functional and Perceptual Biomimetics Approach

open access: yesAdvanced Robotics Research, EarlyView.
A soft robotic simulator is developed to replicate the digital removal of feces (DRF), a sensitive yet essential nursing procedure. Integrating soft actuators, sensors, and a realistic rectal model, the simulator balances functional fidelity with perceptual realism. Engineering evaluations and nurse feedback confirm its potential to enhance training in
Shoko Miyagawa   +10 more
wiley   +1 more source

Cubist and figure studies sketchbook, 1 [picture] /

open access: yes, 1930
Title devised by cataloguer.; Part of the John Power sketchbooks collection.; Condition: Yellowing, soiled, stained.; Also available online at: http://nla.gov.au/nla.pic-vn6293769; Exhibited: Abstraction-Creation: J.W.
Power, J. J. W. (John Joseph Wardell), 1881-1943.
core  

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