Hi Henry, Contact Bay Seal Company, Inc. at Harward, CA, Phone 510-732-7000, Fax 510-782-2651. An year ago they made for me the big O-ring Dia.36" x 8 mm for...
Dear J. H. Hsieh, Please, look at the paper "Discharges in dual magnetron sputtering system" published in IEEE Transactions on Plasma Science Vol.33, No.2 ...
Jindrich Musil
musil@...
Feb 1, 2007 2:32 pm
3704
Hi Could anyone advise me about how to improve adhesion of evaporated gold on InAs? We currently evaporate it from a Mo boat with the substrate at about 150oC....
Krier, Anthony
a.krier@...
Feb 1, 2007 6:10 pm
3705
There are two techniques I have used for improving gold adhesion. Both involve using chromium underlayers. The first is a separate layer of chrome 100-200...
Anthony, I use 20-100 nm Cr then Au on Si substrates. To evaporate the Cr I use a W baskets to sublimate the Cr or I have heard people use Cr plated W rods...
Anthony, NiChrome is better - it gives less stress than Cr. Don ____________________________________ Donald M. Mattox Society of Vacuum Coaters 71 Pinon Hill...
SVC
donmattox@...
Feb 5, 2007 10:32 pm
3708
We are depositing a thick Indium 5-10 um over Ti-Au. Our coating is coming out cloudy. I believe it is specular reflection while others believe it is...
We have deposited In by thermal evaporation and sputtering. The cloudiness you observe may be because light is being scattered as in thick Al films (hillocks...
amthinfilms@...
Feb 5, 2007 11:18 pm
3710
As long as you have good adhesion over the Ti-Au base your clean Indium will stick without and problem. As for the cloudy coating what grade of Indium are you...
Our starting Indium is 4-9's per label. Starting pressure 1E-6 to 8E-7 no change seen due to starting pressure. Dep rate we have tried 15-50A/sec. Our...
Alan, Have you looked at thinner coatings, e.g., less than 1 micron to see if they are shiney? If they are shiney, there is a good chance the cloudiness is ...
Indium, like other metals, will deposit with random orientations of the crystals that form and so some will grow faster than others and thus will shadow the...
Charles A Bishop
cabishopconsulting@...
Feb 8, 2007 1:00 pm
3716
... From: "Dolors Baró" <dolors.baro@...> To: "Vasco Teixeira" <vasco@...> Sent: Thursday, February 08, 2007 9:45 AM Subject: summer school ...
Hello, My transmission spectra of a transparent thin film is fringeless. Under such circumstances can the refractive index of the film be calculated. If so...
Dear Colleague Please, get the following paper. In this paper you will find the equation by which you can calculate the refractive index. H. Mohamed, H. M....
sodky abolila
abo_95@...
Feb 9, 2007 11:34 am
3720
Hello, There are some triks... However if there are not a lot of layers of different known materials, and you know at least approximately their thicknesses and...
Put a temp dot on the substrate, cover with Kapton tamp and use a pin to poke a vent hole through the tape and into the center of the dot to allow trapped air...
Hello, What are your substrates material, dimensions, and what is the temperature you expect to obtain? I mean approximately - tens degrees C, or about a few...
Hello All: I am trying to prepare a machine to sputter MgF2. Has anyone in the group successsfully tried using a 40 kHz power supply to sputter Magnesium...
I have some experience testing thermal dots. These materials has a specific melting point that as you know is dependent on pressure. You will not get an...
Dear friend, As you know, MgF2 is insulator, thus 40 kHz is not sufficient to sputter it. Apart of it, you must use asymmetric bipolar pulsed power supply,...
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Ron Willey
rwilley@...
Feb 9, 2007 11:39 pm
3728
40 KHz unlikely to work. Why is the end user against pro-choice? Because if he feels RF is somehow immoral, he could choose thermal evaporation, a decades old...
do u know it's thickness Other wise u do by software using transmisstion Vs Wavelength data. free softwares available. I don't know much about it . Try it. if...
Hello ALL I am interesting pvd coating for colored plastic. new project , I will make the color to black and blue on that i will get to choice the AlTi...
Hello All, I'm looking for a firm/facility which is able to deposit doped DLC-layers with defined surface resistivity. Could you advise me something useful...
