Results 111 to 120 of about 25,797 (249)

The Illusion of Structural Order: Evaluating the Suppression of Amorphous Carbon Black Pigment Bands in SSE‐Processed Handheld Raman Spectra

Journal of Raman Spectroscopy, EarlyView.
The handheld Raman with SSE system efficiently mitigates fluorescence; however, it may also bias the Raman response towards graphitic domains in carbon‐based black pigments, thereby concealing amorphous carbon contributions that are critical for pigment type identification.
Zeynep Alp, Christoph Herm
wiley   +1 more source

Encoding terahertz holographic bits with a computer-generated 3D-printed phase plate

Scientific Reports
A sub-terahertz holographic image of a two-dimensional 576-bit data code is produced using a diffractive phase-plate element. The phase plate was designed using a modified Gerchberg-Saxton iterative algorithm to encode a focused image of the data code ...
E. Constable, J. Gospodaric, A. Pimenov
doaj   +1 more source

Size‐ and Depth‐Extended Aerial 3D Display Using Fresnel‐Lens‐Enhanced AIRR

Journal of the Society for Information Display, EarlyView.
A size‐ and depth‐extended three‐dimensional (3D) aerial display is realized by combining a light‐field display with a magnifying lens and a Fresnel‐lens‐enhanced aerial imaging by retro‐reflection (LeAIRR) system. The magnifying lens enlarges the virtual light‐field display plane without increasing the physical panel size, extending the aerial image ...
Akito Fukuda, Kazuaki Takiyama, Hiroki Takatsuka, Toru Iwane, Shiro Suyama, Hirotsugu Yamamoto   +5 more
wiley   +1 more source

Wide‐Field Autostereoscopic 3D Display Enabled by Isolated Microlens Array and Gradual Radius Lens Design

Journal of the Society for Information Display, EarlyView.
This paper proposes an Isolated Microlens Array (I‐MLA) with Gradual Radius Lens (GRL) design for a wide‐field autostereoscopic floating 3D display in compact form. Extended coding pitch and directional mesh eliminate crosstalk, while radially varying microlens curvature maintains sharp images at large angles. Simulations show a practical continuous 40°
Hsin‐You Hou, Cheng‐Huan Chen
wiley   +1 more source

Augmented Reality Integration Improves Ergonomics in Dynamic Navigation for Dental Implant Surgery

Journal of the Society for Information Display, EarlyView.
This model‐based study demonstrates that integrating augmented reality (AR) to project X‐Guide navigation data directly onto the surgical field eliminates attention shifts between the patient and monitor, enhancing ergonomic efficiency. The AR system, which projects digital guidance directly into the surgeon’s line of sight, achieved high precision and
Pui Hang Leung, Feng Wang, Zhenyang Li, Zongqi He, Yifan Peng, Wei‐fa Yang   +5 more
wiley   +1 more source

Holographic measurement of drop-on-demand drops in flight [PDF]

, 2011
The analysis of images of ink drops in flight can provide information about jet straightness, drop velocity and volume. However trade-offs between field of view, optical and digital resolution and other factors such as depth of field and optical ...
Castrejón-Pita, JR, Hutchings, IM, Martin, GD   +2 more
core  

Thin Maxwellian Virtual Reality Near‐Eye Display Using Holographic Optical Element and Mini‐Fresnel Lens Array

Journal of the Society for Information Display, EarlyView.
A thin Maxwellian‐view VR near‐eye display based on a holographic optical element (HOE) is presented. Integrating the HOE with the display panel eliminates the structural gap, achieving an 8‐mm internal spacing. Accommodation‐independent image sharpness is experimentally verified over a 0‐ to 3.3‐D range, mitigating the vergence–accommodation conflict.
Minseong Kim, Myeong‐Ho Choi, Jae‐Hyeung Park   +2 more
wiley   +1 more source

Combining the Underwater Vision Profiler 6 with sediment traps to measure in situ velocity of marine particles

Limnology and Oceanography: Methods, EarlyView.
Abstract Particles sinking from the surface to the deep ocean play a key role in the biological carbon pump, whose efficiency depends partly on sinking velocities. Over the last decade, in situ imaging has enabled critical advances in our understanding of particle dynamics in the ocean.
Manon Laget, Alexandre Accardo, Marc Picheral, Camille Catalano, Lionel Guidi, Tristan Biard   +5 more
wiley   +1 more source

Recent Advances in Photonic Bound States in the Continuum: From Fundamentals to Engineering and Implementation

Laser &Photonics Reviews, EarlyView.
This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley   +1 more source

Coherence‐Gated Mirau Interferometry for Single‐Shot Quantitative Phase Imaging and Motion Sensing

Laser &Photonics Reviews, EarlyView.
This paper presents a compact add‐on module converting a Mirau or other on‐axis interferometer into a single‐shot quantitative phase imaging system using coherence gating and precise optical path matching. Demonstrations include time‐resolved imaging of human cells and streaming red blood cells, visualization of evaporation dynamics in liquid mixtures,
Petr Bouchal, Martin Konečný, Zdeněk Nováček, Radim Chmelík, Zdeněk Bouchal   +4 more
wiley   +1 more source