Wettability-Based Colorimetric Test Strips for Gasoline/Oil Mixture Differentiation

2015 ◽  
Vol 1105 ◽  
pp. 331-334 ◽  
Author(s):  
Shuang Qiu ◽  
Michael Chung Kay Wong ◽  
Paul Chi Hang Li
Keyword(s):  
Vapor Deposition ◽  
Low Cost ◽  
Engine Performance ◽  
Chemical Vapor ◽  
Test Strip ◽  
Inverse Opal ◽  
Opal Film ◽  
Colorimetric Test ◽  
Oil Mixtures

As inspired by the pH paper for the determination of the acidity levels of solutions, we have developed a wettability-based colorimetric test strip to differentiate the composition of gasoline/oil mixtures. These mixtures are widely used in two-stroke motor engines. A method that is rapid, low cost and simple-to-use will facilitate the differentiation of these gasoline/oil mixtures, and ensure the use of these mixtures in the proper ratios in two-stroke engines for optimized engine performance and endurance. An inverse opal film (IOF) consisting of nanopores was synthesized on the silicon strips. These strips were then functionalized with alkysilanes through chemical vapor deposition. Based on the observation that the silanized nanopores are wetted or not wetted by the gasoline/oil mixtures, we are able to differentiate between the 16:1 and 1:1 mixtures.

scholarly journals The Progress on Low-Cost, High-Quality, High-Temperature Superconducting Tapes Deposited by the Combustion Chemical Vapor Deposition Process

2001 ◽  
Vol 689 ◽  
Author(s):  
Shara S. Shoup ◽  
Marvis K. White ◽  
Steve L. Krebs ◽  
Natalie Darnell ◽  
Adam C. King ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
High Temperature ◽  
Critical Current Density ◽  
Buffer Layer ◽  
Critical Current ◽  
Vapor Deposition ◽  
Low Cost ◽  
Chemical Vapor ◽  
High Critical Current Density ◽  
High Quality

ABSTRACTThe innovative Combustion Chemical Vapor Deposition (CCVD) process is a non-vacuum technique that is being investigated to enable next generation products in several application areas including high-temperature superconductors (HTS). In combination with the Rolling Assisted Biaxially Textured Substrate (RABiTS) technology, the CCVD process has significant promise to provide low-cost, high-quality lengths of YBCO coated conductor. The CCVD technology has been used to deposit both buffer layer coatings as well as YBCO superconducting layers. A buffer layer architecture of strontium titanate and ceria have been deposited by CCVD on textured nickel substrates and optimized to appropriate thicknesses and microstructures to provide templates for growing PLD YBCO with high critical current density values. The CCVD buffer layers have been scaled to meter plus lengths with good epitaxial uniformity along the length. A short sample cut from one of the lengths enabled high critical current density PLD YBCO. Films of CCVD YBCO superconductors have been grown on single crystal substrates with critical current densities over 1 MA/cm2. Work is currently in progress to combine both the buffer layer and superconductor technologies to produce high-quality coupons of HTS tape made entirely by the non-vacuum CCVD process.

Low-cost combustion chemical vapor deposition of epitaxial buffer layers and superconductors

1999 ◽  
Vol 9 (2) ◽  
pp. 2426-2429 ◽  
Author(s):  
S.S. Shoup ◽  
S. Shanmugham ◽  
D. Cousins ◽  
A.T. Hunt ◽  
M. Paranthaman ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Low Cost ◽  
Chemical Vapor ◽  
Buffer Layers

Diamond direct and inverse opal matrices produced by chemical vapor deposition

2011 ◽  
Vol 53 (6) ◽  
pp. 1131-1134 ◽  
Author(s):  
V. G. Ralchenko ◽  
D. N. Sovyk ◽  
A. P. Bolshakov ◽  
A. A. Homich ◽  
I. I. Vlasov ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Inverse Opal

Progress in Catalytic Preparation of Carbon/Carbon Composites

2013 ◽  
Vol 634-638 ◽  
pp. 2004-2008
Author(s):  
Bing Ju Li ◽  
Jun Li ◽  
Lei Shi ◽  
Zhou Jian Tan ◽  
Ji Qiao Liao
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Catalytic Properties ◽  
Low Cost ◽  
Chemical Vapor ◽  
Carbon Composites ◽  
Catalytic Chemical Vapor Deposition ◽  
Vapor Deposition Technique ◽  
Development Tendency ◽  
Published Research

This paper reviewed published research into catalytic fabrication techniques and recent progresses of carbon/carbon (C/C) composites. It’s described the catalytic chemical vapor deposition theory and reviewed the catalytic properties of different metal catalysts. Merits and demerits of the traditional chemical vapor deposition, improved chemical vapor deposition and other new rapid densification techniques were analyzed. The new densification techniques are to shorten the preparation cycle, but most of them are limited in the laboratory with application problems. Finally, the prospect on the application and development tendency of improved catalytic chemical vapor deposition technique is put forward in the rapid low cost fabrication of C/C composites in the future.

Characterization of Si-DLC films synthesized by low cost plasma-enhanced chemical vapor deposition

2020 ◽  
Vol 33 ◽  
pp. 1997-2002 ◽  
Author(s):  
Igor A. Salimon ◽  
Aleksandr A. Temirov ◽  
Ilya V. Kubasov ◽  
Elena A. Skryleva ◽  
Aleksandr M. Kislyuk ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Low Cost ◽  
Chemical Vapor

Numerical Model of Template-Based Chemical Vapor Deposition Processes to Manufacture Carbon Nanotubes for Biological Devices

2015 ◽  
Author(s):  
Yashar Seyed Vahedein ◽  
Michael G. Schrlau
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Process Parameters ◽  
Flow Rate ◽  
Vapor Deposition ◽  
Carbon Nanostructures ◽  
Numerical Models ◽  
Fluid Dynamic ◽  
Low Cost ◽  
Chemical Vapor

Carbon nanotubes (CNTs) hold significant promise in the fields of efficient drug delivery and bio-sensing for disease treatment because of their unique properties. In our lab, single and arrayed CNT-tipped devices are manufactured by deposition of carbon on the heated surfaces of templates using chemical vapor deposition (Template-Based Chemical Vapor Deposition, TB-CVD). Experimental results show CNT formation in templates is controlled by TB-CVD process parameters such as flow rate and temperature. However, there is a need for a more comprehensive and low cost way to characterize the flow in the furnace in order to understand how process parameters may affect CNT formation. In this report, 2D and 3D numerical models with Quadrilateral grids were developed using computational fluid dynamic (CFD) commercial codes. Velocity patterns and flow regimes in the tube were compared with experimental data. In addition, statistical techniques were employed to study temperature profiles and velocity patterns in the furnace as a function of flow rate. The outcome of this work will help to elucidate the TB-CVD process and facilitate the efficient manufacture of carbon nanostructures from a variety of templates. The results are broadly applicable to the manufacturing of CNTs and other nanostructured devices used in energy and biomedical fields, including CNT-based devices used in biological applications.

Scale-up of oCVD: large-area conductive polymer thin films for next-generation electronics

2015 ◽  
Vol 2 (2) ◽  
pp. 221-227 ◽  
Author(s):  
Peter Kovacik ◽  
Gabriella del Hierro ◽  
William Livernois ◽  
Karen K. Gleason
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Polymer Films ◽  
Vapor Deposition ◽  
Low Cost ◽  
Scale Up ◽  
Conductive Polymer ◽  
Chemical Vapor ◽  
Next Generation ◽  
Large Area

We demonstrate large-area conductive polymer films using oxidative chemical vapor deposition and apply them to low-cost and durable conductive textiles.

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