scholarly journals Enhanced light extraction from free-standing InGaN/GaN light emitters using bio-inspired backside surface structuring

2017 ◽  
Vol 25 (14) ◽  
pp. 15778 ◽  
Author(s):  
Christopher D. Pynn ◽  
Lesley Chan ◽  
Federico Lora Gonzalez ◽  
Alex Berry ◽  
David Hwang ◽  
...  
Keyword(s):  
Light Extraction ◽  
Light Emitters ◽  
Free Standing ◽  
Surface Structuring

Combining surface plasmonic and light extraction enhancement on InGaN quantum-well light-emitters

Nanoscale ◽  
2016 ◽  
Vol 8 (36) ◽  
pp. 16340-16348 ◽  
Author(s):  
Ahmed Fadil ◽  
Yiyu Ou ◽  
Daisuke Iida ◽  
Satoshi Kamiyama ◽  
Paul Michael Petersen ◽  
...  
Keyword(s):  
Quantum Well ◽  
Light Extraction ◽  
Light Emitters

scholarly journals Design rules for white light emitters with high light extraction efficiency

2019 ◽  
Vol 27 (16) ◽  
pp. A1297 ◽  
Author(s):  
Peifen Zhu ◽  
Hongyang Zhu ◽  
Saroj Thapa ◽  
Gopi C. Adhikari
Keyword(s):  
White Light ◽  
Extraction Efficiency ◽  
High Light ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Light Emitters ◽  
Design Rules

Spatial mapping on surface light extraction from 2D photonic quasicrystals patterned GaN-based light emitters

2007 ◽  
Vol 4 (1) ◽  
pp. 100-103
Author(s):  
ZhenSheng Zhang ◽  
Bei Zhang ◽  
Tao Dai ◽  
Kui Bao ◽  
Dan Liu ◽  
...  
Keyword(s):  
Light Extraction ◽  
Spatial Mapping ◽  
Light Emitters ◽  
Photonic Quasicrystals

Body balance in a free-standing position in road and off-road cyclists

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Paulina Hebisz ◽  
Rafal Hebisz ◽  
Marek Zaton
Keyword(s):  
Sagittal Plane ◽  
Standing Position ◽  
The Body ◽  
Free Standing ◽  
Body Balance ◽  
Eyes Closed ◽  
Road Cycling ◽  
Progressive Exercise ◽  
Before And After ◽  
Road Cyclists

AbstractBackground: The purpose of this study was to compare body balance in road and off-road cyclists, immediately before and after the racing season.Material/Methods: Twenty individuals participated in the study and they were divided into two groups: specialists in road-cycling (n = 10) and in off-road cycling (n = 10). Immediately before and after the five-month racing season stabilographic trials were carried out (at rest and after progressive exercise). In assessing body balance the distance and velocity of the centre shifts (in the anterior-posterior and left-right direction) were analysed. The tests were performed with the cyclists’ eyes open, eyes closed, and in feedback.Results: After the racing season, in the off-road cyclists’ group, distance and velocity of the centre of pressure shifts increased after a progressive exercise.Conclusions: In the off-road cyclists’ group the balance of the body in the sagittal plane deteriorated after the racing season. Moreover, after the racing season off-road cyclists were characterized by a worse balance of the body, compared to road cyclists

Wrinkling Poly(trimethylene 2,5-Furanoate) Free-standing Films: Nanostructure Formation and Physical Properties

2020 ◽  
Author(s):  
Michelina Soccio ◽  
Nadia Lotti ◽  
Andrea Munari ◽  
Esther Rebollar ◽  
Daniel E Martínez-Tong
Keyword(s):  
Irradiation Time ◽  
Polymer Surface ◽  
Laser Source ◽  
Free Standing ◽  
Force Microscopy ◽  
Nanostructure Formation ◽  
Physicochemical Changes ◽  
Angle Measurements ◽  
Atomic Force ◽  
Contact Angle Measurements

<p>Nanostructured wrinkles were developed on fully bio-based poly(trimethylene furanoate) (PTF) films by using the technique of Laser Induced Periodic Surface Structures (LIPSS). We investigated the effect of irradiation time on wrinkle formation using an UV pulsed laser source, at a fluence of 8 mJ/cm2. It was found that the pulse range between 600 and 4800 pulses allowed formation of periodic nanometric ripples. The nanostructured surface was studied using a combined macro- and nanoscale approach. We evaluated possible physicochemical changes taking place on the polymer surface after irradiation by infrared spectroscopy, contact angle measurements and atomic force microscopy. The macroscopic physicochemical properties of PTF showed almost no changes after nanostructure formation, differently from the results previously found for the terephthalic counterparts, as poly(ethyleneterephthalate), PET, and poly(trimethyleneterephthalate), PTT. The surface mechanical properties of the nanostructured PTF were found to be improved, as evidenced by nanomechanical force spectroscopy measurements. In particular, an increased Young’s modulus and higher stiffness for the nanostructured sample were measured. <br></p>

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