Novel fabrication method of LED freeform lens based on electrohydrodynamic

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

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Fabrication and Characterization of Biocomposite Using Grewia Optiva Fibre (i.e. Bhimal) Reinforced Polyvinyl Alcohol (PVA)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1105.51 ◽

2015 ◽

Vol 1105 ◽

pp. 51-55 ◽

Cited By ~ 1

Author(s):

K.M. Gupta ◽

Kishor Kalauni

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Natural Fibre ◽

Fabrication Method ◽

View Point ◽

Engineering Material ◽

Fibre Composites ◽

Grewia Optiva ◽

Fabrication And Characterization

Bhimal fibres are quite a newer kind of bio-degradable fibres. They have never been heard before in literatures from the view point of their utility as engineering material. These fibres have been utilized for investigation of their properties. Characterization of this fibre is essential to determine its properties for further use as reinforcing fibre in polymeric, bio-degradable and other kinds of matrix. With this objective, the fabrication method and other mechanical properties of Bhimal-reinforced-PVA biocomposite have been discussed. The stress-strain curves and load-deflection characteristics are obtained. The tensile, compressive, flexure and impact strengths have been calculated. The results are shown in tables and graphs. The results obtained are compared with other existing natural fibre biocomposites. From the observations, it has been concluded that the tensile strength of Bhimal-reinforced-PVA biocomposite is higher than other natural fibre composites. Hence these can be used as reinforcement to produce much lighter weight biocomposites.

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Study of a novel fabrication method of 3D Ag-based nanoporous structures for electrochemical detection

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2021.114990 ◽

2021 ◽

Vol 882 ◽

pp. 114990

Author(s):

Yu Tian ◽

Jie Zhao ◽

Dongxue Han ◽

Shifan Zhao ◽

Yuanwei Zhang ◽

...

Keyword(s):

Electrochemical Detection ◽

Fabrication Method ◽

Nanoporous Structures

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Floating-on-water Fabrication Method for Thin Polydimethylsiloxane Membranes

Polymers ◽

10.3390/polym11081264 ◽

2019 ◽

Vol 11 (8) ◽

pp. 1264 ◽

Cited By ~ 2

Author(s):

Daehan Kim ◽

Sung-Hwan Kim ◽

Joong Yull Park

Keyword(s):

Cell Culture ◽

Water Surface ◽

Fabrication Method ◽

Membrane Structures ◽

Special Equipment

Polydimethylsiloxane (PDMS) membranes are used in various applications, such as microvalves, micropumps, microlenses, and cell culture substrates, with various thicknesses from microscale to nanoscale. In this study, we propose a simple fabrication method for PDMS membranes on a water surface, referred to as the floating-on-water (FoW) method. FoW can be used to easily fabricate PDMS membranes with thicknesses of a few micrometers (minimum 3 μm) without special equipment. In addition, as the membrane is fabricated on the water surface, it can be easily handled without damage. In addition, alternative membrane structures were demonstrated, such as membrane-on-pins and droplet-shaped membranes. FoW can be widely used in various applications that require PDMS membranes with microscale thicknesses.

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A New Fabrication Method for the Casting of Cored Materials

Cast Metals ◽

10.1080/09534962.1992.11819099 ◽

1992 ◽

Vol 5 (2) ◽

pp. 95-102 ◽

Cited By ~ 3

Author(s):

H. Soda ◽

A. Ichinose ◽

G. Motoyasu ◽

A. Ohno ◽

A. Mclean

Keyword(s):

Fabrication Method

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A Proposed Fabrication Method of Novel PCL-GEL-HAp Nanocomposite Scaffolds for Bone Tissue Engineering Applications

Advanced Composites Letters ◽

10.1177/096369351001900401 ◽

2010 ◽

Vol 19 (4) ◽

pp. 096369351001900 ◽

Cited By ~ 22

Author(s):

A. Hamlekhan ◽

M. Mozafari ◽

N. Nezafati ◽

M. Azami ◽

H. Hadipour

Keyword(s):

Tissue Engineering ◽

Bone Tissue Engineering ◽

Bone Tissue ◽

Mechanical Test ◽

Fibroblast Cell ◽

Mouse Fibroblast ◽

Fabrication Method ◽

Engineering Applications ◽

Poly Caprolactone

In this study, poly(∊-caprolactone) (PCL), gelatin (GEL) and nanocrystalline hydroxyapatite (HAp) was applied to fabricate novel PCL-GEL-HAp nanaocomposite scaffolds through a new fabrication method. With the aim of finding the best fabrication method, after testing different methods and solvents, the best method and solvents were found, and the nanocomposites were prepared through layer solvent casting combined with freeze-drying. Acetone and distillated water were used as the PCL and GEL solvents, respectively. The mechanical test showed that the increasing of the PCL weight through the scaffolds caused the improvement of the final nanocomposite mechanical behavior due to the increasing of the ultimate stress, stiffness and elastic modulus (8 MPa for 0% wt PCL to 23.5 MPa for 50% wt PCL). The biomineralization investigation of the scaffolds revealed the formation of bone-like apatite layers after immersion in simulated body fluid (SBF). In addition, the in vitro cytotoxity of the scaffolds using L929 mouse fibroblast cell line (ATCC) indicated no sign of toxicity. These results indicated that the fabricated scaffold possesses the prerequisites for bone tissue engineering applications.

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