Results 61 to 70 of about 2,012,293 (294)

Laser speckle

, 2011
Im Gegensatz zu der holografischen Interferometrie ermöglicht die Speckle-Interferometrie eine reine elektrooptische Datenaufzeichnung mit fernsehtechnischen Mitteln. Die zumeist fotografische Aufzeichnung und umständliche, aber auch zeitintensive Entwicklung der Speckle-lnterferogramme kann entfallen.
openaire   +3 more sources

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 more
wiley   +1 more source

Hyperuniformity in amorphous speckle patterns [PDF]

, 2018
Hyperuniform structures possess the ability to confine and drive light, although their fabrication is extremely challenging. Here we demonstrate that speckle patters obtained by a superposition of randomly arranged sources of Bessel beams can be used to ...
Ancora, Daniele, Di Battista, Diego, Leonetti, Marco, Ruocco, Giancarlo, Zacharakis, Giannis   +4 more
core   +2 more sources

Ocular microtremor laser speckle metrology [PDF]

SPIE Proceedings, 2009
Ocular Microtremor (OMT) is a continual, high frequency physiological tremor of the eye present in all subjects even when the eye is apparently at rest. OMT causes a peak to peak displacement of around 150nm-2500nm with a broadband frequency spectrum between 30Hz to 120Hz; with a peak at about 83Hz.
Al-Kalbani, Mohammed, Mihaylova, Emilia, Collins, Niamh, Coakley, David, Boyle, Gerard, Toal, Vincent   +5 more
openaire   +2 more sources

Interfacial Modulation for High‐Efficiency Large‐Area Organic Photovoltaics and Perovskite‐Organic Tandem Solar Modules

Advanced Functional Materials, EarlyView.
Self‐assembled monolayers (SAMs) are promising hole‐transporting materials for organic photovoltaics (OPVs), but suffer from self‐aggregation and poor large‐area uniformity. We find that interfacial modification using nicotinic hydrazide can eliminate the residual SAM aggregates by forming energetically favorable complexes, yielding uniform SAM.
Seongwon Yoon, Kangsik Cho, Sungmin Park, Kyeongmin Kim, Hyungju Ahn, Junhyeong Kim, Ahyeon Jin, Uijoon Lee, Yoon Hee Jang, Yongseok Jun, Hae Jung Son   +10 more
wiley   +1 more source

Self-mixing interference effects in tunable diode laser absorption spectroscopy [PDF]

, 2009
We report the effects of self-mixing interference on gas detection using tunable diode laser spectroscopy. For very weak feedback, the laser diode output intensity gains a sinusoidal modulation analogous to that caused by low finesse etalons in the ...
Hodgkinson, Jane, Masiyano, Dackson, Schilt, S., Tatam, Ralph P.   +3 more
core   +2 more sources

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

Advanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Capillaroscopy in 2016 : new perspectives in systemic sclerosis [PDF]

, 2016
Systemic sclerosis (SSc) is an autoimmune disorder of unknown etiology characterized by early impairment of the microvascular system. Nailfold microangiopathy and decreased peripheral blood perfusion are typical clinical aspects of SSc.
Cutolo, M, Llado, A, Paolino, S, Pizzorni, C, Ruaro, B, Smith, Vanessa, Sulli, A   +6 more
core   +1 more source

Phase-conjugation of the isolated optical vortex using a flat surfaces

, 2014
The robust method for obtaining the helical interference pattern due to the phase-conjugation of an isolated optical vortex by means of the non-holographic technique is proposed.
A. Yu. Okulov, Allen, Arlt, Basistiy, Basov, Beth, Bhattacharya, Dennis, Felde, Hellwarth, Leach, Leach, MacDonald, Marchiano, Menachem, Nye, Okulov, Okulov, Okulov, Okulov, Okulov, Okulov, Puppe, Thiel, Veselago, Woerdemann, Zerrouki   +26 more
core   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source