11 Questions 20 Answers 0 Followers
Questions related from Dongkyu Lee
In general, the microwave oven employs 2.45 GHz and most microwave ovens have similar cavity. As I guess, the transmitting length isn't finite. However, how about valid distance of the...
29 January 2018 9,384 7 View
I hope to make a compact electric circuit to control my module. Because module size is very small (diamter=11 mm, length=30 mm), I can't use general timer relay. My module operates as...
01 December 2017 3,669 2 View
I am in trouble to utilize 3-D printed structure for casting of PDMS(or other RTV silicon). Model of 3-D printer which I used is objet 24(stratasys) and material is verowhite. 3D printed structure...
14 March 2017 9,602 3 View
In order to obtain CO2 gas, I used two powder such as sodium hydrogen carbonate(NaHCO3) and citric acid(C6H8O7). Two powders are mixed by water for making aqueous solution. However, reaction time...
17 March 2016 9,189 9 View
Capillary effect might be observed in narrow tube or micro-channel due to various properties (surface tension of fluid, contact angle, hydrophobicity or phillicity of structures, etc). I hope to...
25 February 2016 4,982 4 View
24 February 2016 3,835 0 View
In general, air flow can be classified three kinds of method at the partial differential equation(PDE), and they are elliptic, parabolic, hyperbolic. Parabolic is utlized for one-way flow such as...
15 October 2015 2,451 7 View
I knew that there are air drills which use air stream for its rotating motion, and they have been used for high rpm and power generating such as garage or indutstrial place. Is it possile to use...
24 July 2015 2,817 7 View
I heard that men generate electrostatic charge for micro water particle, particularly positive charge. Although, shooting enormous water particles or fogging system can surpress dust, positive...
21 July 2015 6,924 4 View
In general, I knew that they use vacuum chamber when degassing is required between microfluidics or MEMS researchers. How much level, pressure, is proper to theses works? Of course, I used vacuum...
10 July 2015 3,269 4 View
What is the best solution for elimnating air bubbles in the micro channel? I have a trouble for bubble elimination in the micro channel for a long time. I employ some method refer to other...
10 July 2015 3,769 16 View
