Results 41 to 50 of about 103,433 (302)

Incoherent Digital Holography: A Review

Applied Sciences, 2018
Digital holography (DH) is a promising technique for modern three-dimensional (3D) imaging. Coherent holography records the complex amplitude of a 3D object holographically, giving speckle noise upon reconstruction and presenting a serious drawback ...
Jung-Ping Liu, Tatsuki Tahara, Yoshio Hayasaki, Ting-Chung Poon   +3 more
doaj   +1 more source

Nanooptical elements for visual verification

Scientific Reports, 2021
This paper focuses on the development of flat diffractive optical elements (DOEs) for protecting banknotes, documents, plastic cards, and securities against counterfeiting.
Alexander Goncharsky, Anton Goncharsky, Dmitry Melnik, Svyatoslav Durlevich   +3 more
doaj   +1 more source

Fabrication Method for Spin-Coating ITO-Competitive PEDOT:PSS onto PVDF Film

International Journal of Polymer Science
This paper shows a four-order reduction of magnitude in sheet resistance for spin-coating poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) onto polyvinylidene fluoride (PVDF) film for a final sheet resistance comparable to commercially ...
Luke Johnson, Jessica Staker, Stephen Warren, Kyle Schvaneveldt, Quinn Hunsaker, Annie Laughlin, Daniel Smalley   +6 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Evaluation of the realism of a full-color reflection H2 analog hologram recorded on ultra-fine-grain silver-halide material

Open Physics, 2019
This paper presents an evaluation of the realism of a full-color reflection H2 analog hologram recorded on ultra-fine-grain silver-halide material. An H2 hologram is a transplane image that is different from the well-known Denisyuk hologram in which the ...
Gentet Philippe, Gentet Yves, Choi Pyeung-Ho, Lee Seung-Hyun   +3 more
doaj   +1 more source

Testing Holographic Principle from Logarithmic and Higher Order Corrections to Black Hole Entropy

, 2004
The holographic principle is tested by examining the logarithmic and higher order corrections to the Bekenstein-Hawking entropy of black holes. For the BTZ black hole, I find some disagreement in the principle for a holography screen at spatial infinity ...
't Hooft, A. Ashtekar, A. Ashtekar, A. Strominger, A. Strominger, A.R. Steif, C. Teitelboim, D.T. Son, D.V. Fursaev, E. Witten, F. Falceto, F. Reif, G. 't Hooft, G. Arcioni, G. Kang, G. Morandi, G.W. Gibbons, G.W. Gibbons, H. Rademacher, J.-L. Jing, J.D. Bekenstein, J.D. Bekenstein, J.D. Brown, J.D. Brown, J.D. Brown, J.F. Barbero, J.M. Maldacena, J.W. York Jr., K. Huang, K.R. Dienes, L. Susskind, L. Susskind, M. Bañados, M. Bañados, M. Henneaux, M. Plischke, M. Spradlin, M.-I. Park, M.-I. Park, M.M. Akbar, N. Hayashi, R. Bousso, R. Dijkgraaf, R.K. Kaul, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Das, S. Hyun, S.N. Solodukhin, S.W. Hawking, S.W. Hawking, S.W. Hawking, T. Jacobson, T. Jacobson, T.R. Govindarajan, V.P. Frolov, Y.S. Myung   +59 more
core   +1 more source

Interstellar holography [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
The dynamic spectrum of a radio pulsar is an in-line digital hologram of the ionized interstellar medium. It has previously been demonstrated that such holograms permit image reconstruction, in the sense that one can determine an approximation to the complex electric field values as a function of Doppler shift and delay, but to date the quality of the ...
Walker, Mark A., Koopmans, Léon V. E., Stinebring, Daniel R., van Straten, W.   +3 more
openaire   +4 more sources

Purcell‐Enhanced Spectrally Precise Emission in Dual‐Microcavity Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Spectrally precise emission from broadband organic light‐emitting diodes is realized via a dual‐microcavity strategy. This architecture achieves narrowband emission (full width at half maximum, FWHM = 21 nm) with ultrapure color approaching BT.2020 by enhancing the Purcell effect via coupling of excitons with dual‐microcavity resonance.
Jun Yong Kim, Sang Youn Lee, Kwan Hyun Cho, Yun Seon Do   +3 more
wiley   +1 more source

Special Issue on Digital Holographic 3D Imaging: Capture, Display, and Evaluation

ETRI Journal, 2019
Holography has been fascinating people for almost 70 years (since Gabor's invention in 1947) as a true three‐dimensional (3D) imaging technology that can replicate 3D scenes in free space.
Małgorzata Kujawińska, Byoungho Lee, Jinwoong Kim, Taegeun Kim   +3 more
doaj   +1 more source

Metasurface Holography with Multiplexing and Reconfigurability

Nanomaterials, 2023
Metasurface holography offers significant advantages, including a broad field of view, minimal noise, and high imaging quality, making it valuable across various optical domains such as 3D displays, VR, and color displays.
Yijun Zou, Hui Jin, Rongrong Zhu, Ting Zhang   +3 more
doaj   +1 more source