Results 51 to 60 of about 119,393 (311)

Clinical observation of tear film breakup time with a novel smartphone-attachable technology

BMC Ophthalmology, 2023
Purpose To demonstrate the practicability of a portable instrument in assessing tear film breakup time (TFBUT): a lens attachment for smartphones (LAS). Methods By applying LAS in combination with the iPhone 12 pro, and a recordable slit-lamp microscope,
Xiaoran Zhang, Jiawei Shen, Zhen Kang, Andrew Chen, Qian Cao, Chunyan Xue   +5 more
doaj   +1 more source

Clinical Observation of Allergic Conjunctival Diseases with Portable and Recordable Slit-Lamp Device

Diagnostics, 2021
Background: The incidence of allergic conjunctival diseases (ACDs) is gradually increasing worldwide. Both ophthalmologists and non-ophthalmologists prescribe eye drops to treat ACDs; however, there are many cases which are treated without sufficient ...
Hiroyuki Yazu, Eisuke Shimizu, Shinri Sato, Naohiko Aketa, Taiichiro Katayama, Ryota Yokoiwa, Yasunori Sato, Kazumi Fukagawa, Yoko Ogawa, Kazuo Tsubota, Hiroshi Fujishima   +10 more
doaj   +1 more source

CHIRON - A Fiber Fed Spectrometer for Precise Radial Velocities

, 2013
The CHIRON optical high-resolution echelle spectrometer was commissioned at the 1.5m telescope at CTIO in 2011. The instrument was designed for high throughput and stability, with the goal of monitoring radial velocities of bright stars with high ...
Bonati, Marco, Fischer, Debra A., Giguere, Matthew J., Moore, Peter, Schwab, Christian, Spronck, Julien F. P., Szymkowiak, Andrew, Tokovinin, Andrei   +7 more
core   +1 more source

Engineering a Spin‐Orbit Bandgap in Graphene‐Tellurium Heterostructures

Advanced Functional Materials, EarlyView.
Tellurium intercalation in epitaxial graphene on Ir(111) enables the emergence of a spin–orbit‐induced bandgap with energy spin splitting. By combining STM, ARPES, spin‐resolved ARPES, and DFT, two structural phases are identified, both exhibiting tunable electronic doping.
Beatriz Muñiz Cano, Fabián Calleja, Daniela Pacilè, Marc G. Cuxart, Michele Pisarra, Antonello Sindona, Fernando Martín, Elena Salagre, Pilar Segovia, Enrique G. Michel, Amadeo. L. Vázquez de Parga, Rodolfo Miranda, Julio Camarero, Manuela Garnica, Miguel Angel Valbuena   +14 more
wiley   +1 more source

Universal optical transmission features in periodic and quasiperiodic hole arrays [PDF]

, 2008
We investigate the influence of array order in the optical transmission properties of subwavelength hole arrays, by comparing the experimental spectral transmittance of periodic and quasiperiodic hole arrays as a function of frequency.
Atwater, Harry A., Lezec, Henri J., Pacifici, Domenico, Sweatlock, Luke A., Walters, Robert J.   +4 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Sensitivity of laser flare photometry compared to slit-lamp cell evaluation in monitoring anterior chamber inflammation in uveitis [PDF]

, 2018
To study the sensitivity of laser flare photometry (LFP) in monitoring anterior chamber inflammation by correlating LFP measurements with slit-lamp evaluation of aqueous cells in HLA-B27-related uveitis in a prospective trial.
Bernasconi, Ottavio, Herbort, Carl, Papadia, Marina   +2 more
core  

A New Approach to the Study of Stellar Populations in Early-Type Galaxies: K-band Spectral Indices and an Application to the Fornax Cluster

, 2007
New measurements of K-band spectral features are presented for eleven early-type galaxies in the nearby Fornax galaxy cluster. Based on these measurements, the following conclusions have been reached: (1) in galaxies with no signatures of a young stellar
Alloin D., Bonnet H., Caon N., D'Onofrio M., David R. Silva, Devillard N., Harald Kuntschner, Longo G., Mariya Lyubenova, Mobasher B., Origlia L., Stoehr F.   +11 more
core   +1 more source

Characterization of digital dispersive spectrometers by low coherence interferometry [PDF]

, 2017
We propose a procedure to determine the spectral response of digital dispersive spectrometers without previous knowledge of any parameter of the system.
Izquierdo, J. G., Martínez Matos, Ó., Rickenstorff, C., Vaveliuk, Pablo, Zamora, S.   +4 more
core   +2 more sources

Understanding and Addressing the Performance Asymmetry Issue in Semitransparent Laminated Organic Photovoltaic Devices

Advanced Functional Materials, EarlyView.
This work addresses the challenge of current–voltage asymmetry in scalable laminated semitransparent organic photovoltaics (OPVs) for indoor applications. Vertical stratification of materials is shown to create an energy barrier, leading to performance differences under different illumination directions.
Gulzada Beket, Anton Zubayer, Leonie Pap, Huagui Lai, Samiran Bairagi, Nakul Jain, Jochen Stahn, Fan Fu, Kenneth Järrendahl, Fredrik Eriksson, Xabier Rodríguez‐Martínez, Olle Inganäs, Uli Würfel, Thomas Österberg, Jonas Bergqvist, Feng Gao   +15 more
wiley   +1 more source