Fabrication of complex PDMS microfluidic structures and embedded functional substrates by one-step injection moulding

RSC Advances ◽  
2016 ◽  
Vol 6 (91) ◽  
pp. 87988-87994 ◽  
Author(s):  
C. Szydzik ◽  
B. Niego ◽  
G. Dalzell ◽  
M. Knoerzer ◽  
F. Ball ◽  
...  
Keyword(s):  
Injection Moulding ◽  
Microfluidic Channels ◽  
One Step ◽  
Functional Components ◽  
Robust Integration

We report a novel injection moulding technique for fabrication of complex multi-layer microfluidic structures, allowing one-step robust integration of functional components with microfluidic channels and fabrication of elastomeric valves.

Study on One-Step Injection Moulding Technology of Screw Drill Stator Bushing

2011 ◽  
Vol 221 ◽  
pp. 562-565 ◽  
Author(s):  
Dong Mei Jiao ◽  
Bai Yuan Lv
Keyword(s):  
Service Life ◽  
Energy Saving ◽  
Injection Moulding ◽  
Rejection Ratio ◽  
One Step ◽  
The One ◽  
Labor Consuming

This thesis presents one kind of new moulding technology of screw drill stator bushing--one-step injection moulding technology, based on which the one-step injection moulding equipment is developed. In the meantime, the compounding to produce screw drill stator bushing is proposed. Experiment on this equipment and the compounding proved this equipment has energy-saving, room-saving, structure-compacting, and low labor-consuming qualities. Moreover, the products have higher density, longer service life, and lower rejection ratio.

IMKS and IMMS: two methods for the production of plastic parts featuring metallic areas

2016 ◽  
Vol 36 (6) ◽  
pp. 549-556 ◽  
Author(s):  
Christian Hopmann ◽  
Kirsten Bobzin ◽  
Roman Schoeldgen ◽  
Mehmet Oete ◽  
Johannes Wunderle ◽  
...  
Keyword(s):  
Injection Moulding ◽  
Surface Engineering ◽  
Thermal Spraying ◽  
Plastic Injection Moulding ◽  
Integrative Process ◽  
One Step ◽  
Plastics Processing ◽  
Production Technologies ◽  
Plastic Parts ◽  
Metal Spraying

Abstract The integration and combination of known technologies to one-step-processes is a promising way to implement enhancements to existing processes and products, as well as to new product developments. This approach is followed by two integrative process technologies that were developed by the Institute of Plastics Processing (IKV) at the RWTH Aachen University and the Surface Engineering Institute (IOT) at the RWTH Aachen University as part of the Cluster of Excellence “Integrative Production Technologies for High-Wage Countries”. In these processes, pure metals or metal alloys are joined to the injection moulded part, which potentially results in particular advantages referring to the electrical properties of the product. The integrated metal/plastic injection moulding (IMKS) represents the combination of injection moulding and metal die casting. The in-mould metal spraying (IMMS) combines the injection moulding with the thermal spraying of metal. In the following, the level of development of both methods is presented and future potentials are shown.

scholarly journals Hydrothermal Synthesis of Graphene Quantum Dots Supported on Three-Dimensional Graphene for Supercapacitors

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 201 ◽  
Author(s):  
Peihui Luo ◽  
Xiangfeng Guan ◽  
Yunlong Yu ◽  
Xiaoyan Li ◽  
Fengpo Yan
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Three Dimensional ◽  
Electrochemical Stability ◽  
Structure And Properties ◽  
Initial Value ◽  
One Step ◽  
Improved Performance ◽  
Functional Components ◽  
Electrodes For Supercapacitors

Incorporation of new functional components into a three-dimensional graphene (3DG) framework improves the performance of supercapacitors based on 3DG as electrodes by tailoring the framework’s structure and properties. In this work, graphene quantum dots (GQDs) were incorporated into 3DG via one-step hydrothermal treatment of GQDs and graphene oxide (GO). By simply adjusting the GQDs/GO feeding ratio by weight, various GQDs/3DG composites were formed. The maximum feeding ratio was 80%, and the prepared composites possessed saturated GQDs loading on the 3DG framework, whereas composites obtained with a GQDs/GO feeding ratio of 40% as electrodes exhibited optimal specific capacitance of 242 F·g−1 for supercapacitors, an increase of 22% compared with that of pure 3DG electrodes (198 F·g−1). This improved performance was mainly due to better electrical conductivity and larger surface area for GQDs/3DG composites with moderate GQDs content. The fabricated GQDs/3DG composites as electrodes for supercapacitors revealed high electrochemical stability. Their capacitance kept 93% of the initial value after 10,000 charge-discharge cycles.

scholarly journals One-step green approach for functional printing and finishing of textiles using silver and gold NPs

RSC Advances ◽  
2018 ◽  
Vol 8 (45) ◽  
pp. 25546-25557 ◽  
Author(s):  
T. Abou Elmaaty ◽  
Kh. El-Nagare ◽  
S. Raouf ◽  
Kh. Abdelfattah ◽  
S. El-Kadi ◽  
...  
Keyword(s):  
Cotton Fabrics ◽  
Ag Nps ◽  
Gold And Silver Nanoparticles ◽  
Simple Method ◽  
Au Nps ◽  
Green Approach ◽  
Functional Printing ◽  
One Step ◽  
Gold Nps ◽  
Functional Components

In this study, we present a successful simple method for printing and finishing of polyester and cotton fabrics using gold and silver nanoparticles (Au-NPs and Ag-NPs, respectively) as stable, fast colorants and functional components.

Laminate Materials for Microfluidic PCBs

2012 ◽  
Vol 2012 (1) ◽  
pp. 000162-000168
Author(s):  
Sarkis Babikian ◽  
Brian Soriano ◽  
G.P. Li ◽  
Mark Bachman
Keyword(s):  
Printed Circuit Board ◽  
Low Cost ◽  
Microfluidic Devices ◽  
Ethylene Vinyl Acetate ◽  
Circuit Board ◽  
Microfluidic Channels ◽  
Printed Circuit ◽  
Laminate Materials ◽  
Integrated Microfluidics ◽  
Functional Components

The printed circuit board (PCB) is a very attractive platform to produce highly integrated highly functional microfluidic devices. We have investigated laminate materials and developed novel fabrication processes to realize low cost and scalable to manufacturing integrated microfluidics on PCBs. In this paper we describe our vision to integrate functional components with microfluidic channels. We also report on the use of Ethylene Vinyl Acetate (EVA) as a laminate for microfluidics. The material was characterized for microfluidic applications and compared with our previously reported laminates: 1002F and Polyurethane.

scholarly journals One-step in-mould modification of PDMS surfaces and its application in the fabrication of self-driven microfluidic channels

Lab on a Chip ◽  
2015 ◽  
Vol 15 (22) ◽  
pp. 4322-4330 ◽  
Author(s):  
Ayodele Fatona ◽  
Yang Chen ◽  
Michael Reid ◽  
Michael A. Brook ◽  
Jose M. Moran-Mirabal
Keyword(s):  
Microfluidic Devices ◽  
Microfluidic Channels ◽  
One Step

In this manuscript Fatona et al. describe a simple one-step in-mould method to modify PDMS surfaces with surfactants and render them permanently hydrophilic, and demonstrate its use to fabricate self-driven microfluidic devices.

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