Results 61 to 70 of about 31,877 (296)

Full-color computational holographic near-eye display

Journal of Information Display, 2019
Near-eye displays (NEDs) are an excellent candidate for the future of augmented reality. Conventional micro-display based NED designs mostly provide stereoscopic 3D experience, which leads to visual discomfort due to vergence-accommodation conflict ...
Seyedmahdi Kazempourradi, Erdem Ulusoy, Hakan Urey   +2 more
doaj   +1 more source

Photonic Nanomaterials for Wearable Health Solutions

Advanced Materials, EarlyView.
This review discusses the fundamentals and applications of photonic nanomaterials in wearable health technologies. It covers light‐matter interactions, synthesis, and functionalization strategies, device assembly, and sensing capabilities. Applications include skin patches and contact lenses for diagnostics and therapy. Future perspectives emphasize AI‐
Taewoong Park, Jung Woo Leem, Young L. Kim, Chi Hwan Lee   +3 more
wiley   +1 more source

Reducing speckle artifacts in digital holography through programmable filtration

ETRI Journal, 2019
We propose a speckle reduction technique in electronic holographic display systems, where digital micro‐mirror array devices are used as spatial light modulators.
Yongjun Lim, Jae‐Hyeung Park, Joonku Hahn, Hayan Kim, Keehoon Hong, Jinwoong Kim   +5 more
doaj   +1 more source

Increasing trap stiffness with position clamping in holographic optical tweezers [PDF]

, 2009
We present a holographic optical tweezers system capable of position clamping multiple particles. Moving an optical trap in response to the trapped object's motion is a powerful technique for optical control and force measurement.
Bowman, R., Gibson, G., Linnenberger, A., Padgett, M., Preece, D., Serati, S.   +5 more
core   +1 more source

Designing Physical Unclonable Functions From Optically Active Materials

Advanced Materials, EarlyView.
Assigning unforgeable “fingerprints” to manufactured goods is a key strategy to fight global counterfeiting. Optical physical unclonable functions (PUFs) are chemically generated random patterns of optically active materials serving as unique authenticators.
Maxime Klausen, Junfang Zhang, Molly M. Stevens   +2 more
wiley   +1 more source

Metalens Eyepiece for 3D Holographic Near-Eye Display

Nanomaterials, 2021
Near-eye display (NED) systems for virtual reality (VR) and augmented reality (AR) have been rapidly developing; however, the widespread use of VR/AR devices is hindered by the bulky refractive and diffractive elements in the complicated optical system ...
Chang Wang, Zeqing Yu, Qiangbo Zhang, Yan Sun, Chenning Tao, Fei Wu, Zhenrong Zheng   +6 more
doaj   +1 more source

Hybrid holographic non-destructive test system [PDF]

, 1978
An automatic hybrid holographic non-destructive testing (HNDT) method and system capable of detecting flaws or debonds contained within certain materials are described.
Kurtz, R. L.
core   +1 more source

Holographic Studies of Entanglement Entropy in Superconductors

, 2012
We present the results of our studies of the entanglement entropy of a superconducting system described holographically as a fully back-reacted gravity system, with a stable ground state.
A Pakman, C Herzog, Clifford V. Johnson, D Cassani, E Witten, E Witten, H Casini, H Casini, IR Klebanov, JM Maldacena, JP Gauntlett, M Headrick, N Bobev, N Bobev, O Aharony, P Basu, RC Myers, S Gubser, S Ryu, S Ryu, SA Hartnoll, SA Hartnoll, SN Solodukhin, SN Solodukhin, SS Gubser, T Albash, T Albash, T Hirata, T Nishioka, T Nishioka, Tameem Albash, V Balasubramanian   +31 more
core   +1 more source

3D Acoustic Imaging Hitting the Diffraction Limit via Fully Parameter‐Optimized Meta‐Lens and Frequency‐Domain Reconstruction

Advanced Materials, EarlyView.
This article employs a binary genetic algorithm to design an ultra‐fine ultrasonic meta‐lens, achieving lateral super‐resolution imaging in the far field (>20λ₀). Building on this, longitudinal resolution is effectively restored through frequency domain reconstruction.
Zong‐Lin Li, Lai‐Xin Huang, Qi‐Li Sun, Yong‐Jian Zhao, Peng‐Qi Li, Yu‐Gui Peng, Long‐Sheng Zeng, Juan Zhou, Yang Xiao, Xue‐Feng Zhu, Fei Li, Hai‐Rong Zheng   +11 more
wiley   +1 more source

Interferometers as Probes of Planckian Quantum Geometry

, 2012
A theory of position of massive bodies is proposed that results in an observable quantum behavior of geometry at the Planck scale, $t_P$. Departures from classical world lines in flat spacetime are described by Planckian noncommuting operators for ...
A. Connes, Craig J. Hogan, D. Mattingly, G. ’t Hooft, V. B. Braginsky   +4 more
core   +1 more source