Microfluidic paper-based analytical devices fabricated by low-cost photolithography and embossing of Parafilm®

Lab on a Chip ◽  
2015 ◽  
Vol 15 (7) ◽  
pp. 1642-1645 ◽  
Author(s):  
Ling Yu ◽  
Zhuan Zhuan Shi
Keyword(s):  
Low Cost ◽  
Chemical Processing ◽  
Wet Chemical

The combination of photolithography-patterning and embossing of a Parafilm® can fabricate microfluidic paper-based analytical devices (μPADs) without the use of a wax printer, cutter plotter and wet-chemical processing of paper.

All-inorganic quantum-dot light-emitting devices formed via low-cost, wet-chemical processing

2010 ◽  
Vol 20 (1) ◽  
pp. 167-172 ◽  
Author(s):  
Benjamin S. Mashford ◽  
Tich-Lam Nguyen ◽  
Gerard J. Wilson ◽  
Paul Mulvaney
Keyword(s):  
Quantum Dot ◽  
Low Cost ◽  
Chemical Processing ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Wet Chemical

Study on the Manufacture of Microfluidic Chip with Coated Glass

2012 ◽  
Vol 548 ◽  
pp. 254-257 ◽  
Author(s):  
Yan He ◽  
Bai Ling Huang ◽  
Yong Lai Zhang ◽  
Li Gang Niu
Keyword(s):  
Microfluidic Chip ◽  
Low Cost ◽  
Microfluidic Channel ◽  
Critical Factor ◽  
Wet Etching ◽  
Microfluidic Chips ◽  
Etching Technique ◽  
Chip Quality ◽  
Wet Chemical ◽  
Wet Chemical Etching

In this paper, a simple and facile technique for manufacturing glass-based microfluidic chips was developed. Instead of using expensive dry etching technology, the standard UV lithography and wet chemical etching technique was used to fabricate microchannels on a K9 glass substrate. The fabrication process of microfluidic chip including vacuum evaporation, annealing, lithography, and BHF (HF-NH4F-H2O) wet etching were investigated. Through series experiments, we found that anneal was the critical factor for chip quality. As a representative example, a microfluidic channel with 20 m of depth, and 80 m of width was successfully prepared, and the channel surfaces are quite smooth. These results present a simple, low cost, flexible and easy way to fabricate glass-based microfluidic chips.

Thermodynamical Calculations and Experimental Confirmation about the Mg-Al-Spinel Reaction Path in the Sol-Gel-Process

2006 ◽  
Vol 317-318 ◽  
pp. 135-138 ◽  
Author(s):  
Wilfried Wunderlich ◽  
Krupathi Vishista ◽  
Francis D. Gnanam ◽  
Daniel Doni Jayaseelan
Keyword(s):  
Thermal Analysis ◽  
Reaction Path ◽  
Sol Gel ◽  
Chemical Processing ◽  
Aluminium Isopropoxide ◽  
Spinel Formation ◽  
Sol Gel Process ◽  
Wet Chemical ◽  
Enthalpy Data ◽  
Good Agreement

The aim of this research is, to clarify which route the sol-gel-process is taking in the case of a Al-Mg-spinel slurry, in particular, whether the hydrolysis reaction or the spinel formation is faster and which of the intermediate hydroxide phases Al(OH)3, and Mg(OH)2, or MgO and Al2O3 or MgAl2O4H2O are formed during the spinel formation. The spinel-alloy was produced using the polymeric route during wet chemical processing. Aluminium-isopropoxide was hydrolyzed in order to form the boehmite-sol and then the same amount of magnesia was added and mixed. This sol precipitated as boehmite (AlOOH) and brucite (Mg(OH)2) after ageing for 12h as confirmed by differential thermal analysis (DTA), and differential thermal gravity (DTG) measurements. After that, the powders were subsequently annealed at 900oC for 3h in air and observed by TEM. Calculations using thermodynamic enthalpy data are in good agreement with the experiments and can be used to predict reaction paths in other system as well.

Facile and low‐cost fabrication of uniform silicon micro/nanostructures by nanopitting‐assisted wet chemical etching

2018 ◽  
Vol 13 (9) ◽  
pp. 1296-1301 ◽  
Author(s):  
Feng Wang ◽  
Shulan Jiang ◽  
Jinghui Han ◽  
Guangran Guo ◽  
Bingjun Yu ◽  
...  
Keyword(s):  
Chemical Etching ◽  
Low Cost ◽  
Wet Chemical ◽  
Wet Chemical Etching

scholarly journals Fabrication and Photovoltaic Characteristics of Coaxial Silicon Nanowire Solar Cells Prepared by Wet Chemical Etching

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Chien-Wei Liu ◽  
Chin-Lung Cheng ◽  
Bau-Tong Dai ◽  
Chi-Han Yang ◽  
Jun-Yuan Wang
Keyword(s):  
Solar Cells ◽  
Silicon Nanowires ◽  
Chemical Etching ◽  
Low Cost ◽  
Light Trapping ◽  
Silicon Nanowire ◽  
Great Promise ◽  
Etching Time ◽  
Wet Chemical ◽  
Wet Chemical Etching

Nanostructured solar cells with coaxial p-n junction structures have strong potential to enhance the performances of the silicon-based solar cells. This study demonstrates a radial junction silicon nanowire (RJSNW) solar cell that was fabricated simply and at low cost using wet chemical etching. Experimental results reveal that the reflectance of the silicon nanowires (SNWs) declines as their length increases. The excellent light trapping was mainly associated with high aspect ratio of the SNW arrays. A conversion efficiency of ∼7.1% and an external quantum efficiency of ∼64.6% at 700 nm were demonstrated. Control of etching time and diffusion conditions holds great promise for the development of future RJSNW solar cells. Improving the electrode/RJSNW contact will promote the collection of carries in coaxial core-shell SNW array solar cells.

Wet Chemical Processing of Ge in Acidic H2O2 Solution: Nanoscale Etching and Surface Chemistry

2020 ◽  
Vol 9 (8) ◽  
pp. 084002
Author(s):  
Graniel Harne A. Abrenica ◽  
Mathias Fingerle ◽  
Mikhail V. Lebedev ◽  
Sophia Arnauts ◽  
Thomas Mayer ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Chemical Processing ◽  
Wet Chemical ◽  
H2o2 Solution

Synthesis of Submicron AlON Powder by Wet Chemical Processing

2012 ◽  
Vol 624 ◽  
pp. 42-46 ◽  
Author(s):  
Fei Zhong Ma ◽  
Jing Xuan Lei ◽  
Ying Shi ◽  
Jian Jun Xie ◽  
Fang Lei
Keyword(s):  
Carbothermal Reduction ◽  
Single Phase ◽  
Preparation Method ◽  
Process Conditions ◽  
Chemical Processing ◽  
Particle Sizes ◽  
Synthetic Process ◽  
Median Particle ◽  
Wet Chemical ◽  
Partical Size

The single-phase Υ-AlON powders were synthesized from three different precursors: Υ-Al2O3+C, Al(OH)3+C, NH4Al(OH)2CO3+C at 1750°C by carbothermal reduction and nitridation . The effects of aluminium source and synthetic process conditions on the characteristic of Υ-AlON powders were investigated in order to optimize the preparation method. It was revealed that the wet chemical processing was helpful to reduce partical size. The median particle sizes (d50) of AlON powders synthesized from different precusors were 15.33 μm, 2.886 μm, 405.6 nm, respectively.

Synthesis of polycrystalline γ-AlON powders by novel wet chemical processing

2012 ◽  
Vol 55 (12) ◽  
pp. 3405-3410 ◽  
Author(s):  
JingXuan Lei ◽  
FeiZhong Ma ◽  
Ying Shi ◽  
JianJun Xie ◽  
Wei Hu ◽  
...  
Keyword(s):  
Chemical Processing ◽  
Wet Chemical
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