Results 131 to 140 of about 128,271 (341)

A New Instrument for Quickly Determining Refractive Errors of the Eye [PDF]

, 1892
ELMER G. STARR
openalex   +1 more source

Ce3+‐Activated Lithium Rare‐Earth Oxonitridolithosilicates: A New Class of LED Phosphors with Similarities to Garnets

Advanced Functional Materials, EarlyView.
Garnet‐like luminescence upon Ce3+‐activation is found in the first six representatives Li9RESi4N4O8 (RE = Y, La, Gd, Dy, Yb, Lu) of the substance class of lithium rare‐earth oxonitridolithosilicates, which also show a novel structure type. High‐temperature solid‐state synthesis yielded crystalline samples for single‐crystal X‐ray diffraction‐based ...
Kilian M. Rießbeck, Markus Seibald, Christiane Stoll, Anja Köbler, Markus Suta, Hubert Huppertz   +5 more
wiley   +1 more source

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

Advanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul, Archith Rayabharam, Lisa Almonte, Eveline Rigo, Joshy Joseph, Ashutosh Kumar, Zhuxin Dong, Narayana Aluru, Gregory Timp   +8 more
wiley   +1 more source

A Comparative Analysis of Plasmonic and Dielectric Metasurface Sensing Platforms Powered by Bound States in the Continuum

Advanced Functional Materials, EarlyView.
This work reveals a fundamental trade‐off between plasmonic and dielectric metasurfaces for molecular sensing. A clear performance crossover is identified: dielectric metasurfaces excel in air, while plasmonic metasurfaces dominate in lossy solvents. These results establish design rules for infrared metasurface sensors and enable optimized performance ...
Tao Jiang, Angana Bhattacharya, Martin Barkey, Andreas Aigner, Lina Rohrer, Thomas Weber, Juan Wang, Stefan A. Maier, Andreas Tittl   +8 more
wiley   +1 more source

Nanomaterial‐Integrated Fiber Neural Probes for Deep Brain Monitoring and Modulation: Challenges and Opportunities

Advanced Functional Materials, EarlyView.
The article presents nanomaterial‐integrated fiber neural probes as innovative tools for deep brain molecular sensing, neural stimulation, and temperature monitoring. It examines breakthroughs in SERS‐based biomolecule detection, thermoplasmonic activation, and luminescent thermometry, alongside strategies to overcome stability, specificity, and ...
Di Zheng, Yang Li, Muhammad Fayyaz Kashif, Linda Piscopo, Massimo De Vittorio, Ferruccio Pisanello   +5 more
wiley   +1 more source

Factors Associated with Refractive Errors among School Children in Rural Field Practice Area of a Tertiary Care Hospital, Bangalore

National Journal of Community Medicine, 2018
Background: 285 million people are visually impaired worldwide. An estimated 19 million children are visually impaired, and 12million are visually impaired due to Refractive Errors.
Usha S, Vidusha S S Karavadi, Damayanthi MN   +2 more
doaj  

Proportion of refractive errors among undergraduate students of a medical college in South Kerala

Journal of Clinical Ophthalmology and Research
Background: Refractive errors are a leading cause of vision impairment, affecting over a billion people worldwide. Medical students are at high risk due to prolonged screen exposure and academic demands.
S. N. Ajas, N. Asha Raby
doaj   +1 more source

A Smart Magnetically Actuated Flip‐Disc Programmable Metasurface with Ultralow Power Consumption for Real‐Time Channel Control

Advanced Functional Materials, EarlyView.
The study proposes a 1‐bit programmable metasurface based on flip‐disc display, named flip‐disc metasurface (FD‐MTS). This new design enables ultralow energy consumption while maintaining coding patterns. It also exhibits high scalability and multifunctional flexibility.
Jiang Han Bao, Che Liu, Jia Cheng Li, Zhen Hao Fu, Yi Su Huang, Si Qi Huang, Lei Zhang, Jian Wei You, Tie Jun Cui   +8 more
wiley   +1 more source

Frequency of Refractive Errors in Children Visiting Eye Out Patients Department Agency Headquarter Hospital Landi Kotal

Gomal Journal of Medical Sciences, 2009
Background: Refractive errors in children are one of the leading causes of preventable blindness. Prevalence of various refractive errors in children is alarming.
Mohammad Junaid Sethi, Sadia Sethi, Rashid Iqbal   +2 more
doaj  

Anomalous Stiffening of a Conjugated Polymer During Electrochemical Oxidation

Advanced Functional Materials, EarlyView.
The electromechanical response of a thienothiophene‐based conjugated polymer with triethylene glycol side chains is investigated. Electrochemical nanoindentation and atomic force microscopy reveal a modest and reversible increase in elastic modulus at room temperature upon electrochemical oxidation.
Judith Pons i Tarrés, Di Zhu, Chiara Musumeci, Youngseok Kim, Dilara Meli, Hang Yu, Meghna Jha, Bryan D. Paulsen, Ruiheng Wu, Joost Kimpel, Zachary Laswick, Sri Harish Kumar Paleti, Yadong Zhang, Stephen Barlow, Seth R. Marder, Jenny Nelson, Jonathan Rivnay, Christian Müller   +17 more
wiley   +1 more source