scholarly journals How to Tailor Structural Colors for Extended Visibility and White Light Generation Employing Direct Laser Interference Patterning

2019 ◽  
Vol 220 (13) ◽  
pp. 1970025 ◽  
Author(s):  
Sebastian Storm ◽  
Sabri Alamri ◽  
Marcos Soldera ◽  
Tim Kunze ◽  
Andrés Fabián Lasagni
Keyword(s):  
White Light ◽  
Laser Interference ◽  
Structural Colors ◽  
White Light Generation ◽  
Direct Laser ◽  
Light Generation ◽  
Direct Laser Interference Patterning

Physical Insights into Facilitation of an Unprecedented Complexation Reaction on the Surface of a Doped Quantum Dot Leading to White Light Generation

2021 ◽  
Author(s):  
Sabyasachi Pramanik ◽  
Mihir Manna ◽  
Biswajit Hudait ◽  
Shilaj Roy ◽  
Satyapriya Bhandari
Keyword(s):  
Quantum Dot ◽  
White Light ◽  
Complexation Reaction ◽  
Environmentally Sustainable ◽  
White Light Generation ◽  
Light Generation

Herein we report a complexation reaction between Zn2+ ions, being present on the surface of an orange-red emitting environmentally sustainable Mn2+-doped ZnS QD, and non-emitting copper quinolate complex (CuQ2 complex),...

In-Depth Investigation of Copper Surface Chemistry Modification by Ultrashort Pulsed Direct Laser Interference Patterning

Langmuir ◽  
2020 ◽  
Vol 36 (45) ◽  
pp. 13415-13425 ◽  
Author(s):  
Daniel W. Müller ◽  
Anne Holtsch ◽  
Sarah Lößlein ◽  
Christoph Pauly ◽  
Christian Spengler ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Copper Surface ◽  
Laser Interference ◽  
Direct Laser ◽  
Surface Chemistry Modification ◽  
Direct Laser Interference Patterning

scholarly journals Direct Laser Interference Patterning of Diffraction Gratings in Safrofilcon-A Hydrogel: Fabrication and Hydration Assessment

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 679
Author(s):  
Daniel Sola ◽  
Stephan Milles ◽  
Andrés F. Lasagni
Keyword(s):  
Laser Fluence ◽  
Contact Lenses ◽  
Laser Source ◽  
Spatial Period ◽  
Laser Interference ◽  
Periodic Patterns ◽  
Hydration Properties ◽  
Water Contact ◽  
Direct Laser ◽  
Direct Laser Interference Patterning

Refractive index modification by laser micro-structuration of diffractive optical devices in ophthalmic polymers has recently been applied for refractive correction in the fields of optics and ophthalmology. In this work, Safrofilcon-A hydrogel, used as soft contact lenses, was processed by direct laser interference patterning (DLIP) to fabricate linear periodic patterns on the surface of the samples. Periodic modulation of the surface was attained under two-beam interference by using a Q-switched laser source with emission at 263 nm and 4 ns pulse duration. Features of processed areas were studied as a function of both the interference spatial period and the laser fluence. Optical confocal microscopy used to evaluate the topography of the processed samples showed that both structured height and surface roughness increased with laser fluence. Static water contact angle (WCA) measurements were carried out with deionized water droplets on the structured areas to evaluate the hydration properties of DLIP structures. It was observed that the laser structured areas induced a delay in the hydration process. Finally, microstructural changes induced in the structured areas were assessed by confocal micro-Raman spectroscopy showing that at low laser fluences the polymer structure remained almost unaltered. In addition, Raman spectra of hydrated samples recovered the original shape of areas structured at low laser fluence.

Efficient white light generation from 2,3-diphenyl-1,2-dihydro-quinoxaline complex

2010 ◽  
Vol 101 (3) ◽  
pp. 639-642 ◽  
Author(s):  
Y. Dwivedi ◽  
S. Kant ◽  
R. N. Rai ◽  
S. B. Rai
Keyword(s):  
White Light ◽  
White Light Generation ◽  
Light Generation
Sign in / Sign up

Export Citation Format

Share Document