I have to make FTIR for some deposition on plastics. I tried in reflection, but the reflectivity is very bad and doesn't work. I tried in transmision, but most...
leu@...
Jun 24, 2001 3:07 pm
115
Have you considered using the NIR range? Working with overtones and combination bands can solve the problem of high absorbance regions. Of course you need...
Alessandro Del Bianco
alessandro.delbianco@...
Jun 25, 2001 2:39 pm
116
... Felix What is the thickness of your deposited layer? Alan ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Alan Sanders...
Alan Sanders
alan@...
Jun 25, 2001 2:39 pm
117
Felix, You can use a grazing angle reflection approach. Essentially a low angle reflection, but it goes through (transmits through) very much of the width...
CatalyticChemist@...
Jun 25, 2001 2:39 pm
118
... Grazing angle spectroscopy will not work on this type of sample. Grazing angle experiments rely on the development of a so-called electric vector effect...
Alan Sanders
alan@...
Jun 25, 2001 3:56 pm
119
As the samples in question appear to ... and ... The substrate is a polymer, a plastic with a very strong absorbtion in IR.., Felix...
leu@...
Jun 25, 2001 8:13 pm
120
I've noted both the name and keywords!:) Thank you very much! Felix...
leu@...
Jun 25, 2001 8:13 pm
121
... I didm't measure it, but from other experimets I know that is of the order of magnitude of microns, or maybe, less. Anyway the big absorbtion belong to...
leu@...
Jun 25, 2001 8:13 pm
122
Felix -- I have seen FTIR photoacoustic spectroscopy used for similar kinds of work... In particular, there was some work used for profiling the thickness and...
John M. Jarvis
john_jarvis@...
Jun 26, 2001 2:32 pm
123
I believe the correct technology to use for your samples where deposited film thickness is in the region of microns is to use the technique of attenuated total...
Alan Sanders
alan@...
Jun 26, 2001 2:33 pm
124
Hello I need a method to characterize an epoxy coating on a cellulose/nitrocellulose surface. Specifically I need to determine if the epoxy has cured...
lewis kansas
lkansas@...
Jun 29, 2001 3:32 pm
125
Hi Lewis -- There was a recent post with a similar request. Seemed like the best/easiest answer applicable to your problem was to use an FTIR set up with an...
John M. Jarvis
john_jarvis@...
Jun 29, 2001 8:33 pm
126
Lewis, I am not a specialist of curing, but I believe that thermal analysis methods like DSC might be able to help you identify the degree of curing and why...
Paul Cornillon
cornillo@...
Jun 29, 2001 8:33 pm
128
Hi -- If you want people to read your message, you should put some text in the main email. Many people, including me, will not open attachments from people...
John M. Jarvis
john_jarvis@...
Jun 30, 2001 3:32 pm
129
Greetings all! I was searching through my email and found a message that was waiting to be approved. Somehow, it got sent to the group without meeting my ...
jsg918@...
Jul 1, 2001 6:09 am
130
Hello All I was a victim of this virus, when I innocently tried to open the attachment (i.e. the .exe file). For some reasons and so unfortunately, I had...
Victor Benham, Ph.D.
cw400@...
Jul 1, 2001 7:29 pm
131
... Use the mid-IR range and use a diamond ATR system. It's as easy as falling off a log! ...
Alan Sanders
alan@...
Jul 2, 2001 2:31 pm
132
Sir, I am working in the field of diffuse reflectance spectroscopy in the mid IR region. Will anybody suggest me about the sample preparation for the powders...
Nagarajan R
nagarajan@...
Jul 3, 2001 1:20 pm
133
Greetings once again! I just received an "auto-reply" from someone who apparently is out of the office, and has set their email to automatically send out a ...
jsg918@...
Jul 3, 2001 3:38 pm
134
... You can use the following powders for preparing diffuse samples: 1. KBr powder available in 100g bottles or in pre-pack sachets 2. KBr chunks 3. CsI powder...
Alan Sanders
alan@...
Jul 3, 2001 4:13 pm
135
Sir, First of all my thanks to you for the reply. As soon as getting your reply I visited the site "www.spectroscopy.co.uk"and checked in the Applications...
Nagarajan R
nagarajan@...
Jul 4, 2001 4:49 pm
136
... Sure! Go to: http://www.spectroscopy.co.uk/genapp.htm Click on "Diffuse Reflectance" Scroll down and you will find the outline of the KM algorithm. ... ...
Alan Sanders
alan@...
Jul 5, 2001 2:30 pm
137
I am master student in Turkey. The subject of my master thesis is physıcochemıcal study on the genus Astragalus specıes by usıng FTIR. The aim is to...
sevgiss@...
Aug 10, 2001 3:53 pm
138
DATAN for multidimensional analysis of spectroscopic data is now available. The analysis, which is totally model independent, determines the spectral responses...
multidanalyses@...
Oct 3, 2001 9:24 pm
139
Hi, I'm looking for small spectrometer (less than $136 and 0,860x1,310x0,430 inches) If you know one, please let me know. thank you ...
Hi I have seen these tiny spectrometers. I know that Jobin-Yvon makes them. Possibly others do too. So I suggest you contact Jobin-Yvon. Their website address...
rpayling@...
Dec 6, 2001 12:51 pm
141
Wow, those are pretty wide-open specs except for price. What wavelength range? What straylight performance? Need a detector too? Perhaps you can use an...
John M. Jarvis
john_jarvis@...
Dec 6, 2001 1:28 pm
142
Please join Ultrafast (Femtosecond) Group at http://groups.yahoo.com/group/ultrafast/ This is a group devoted to research of ultrafast, femtosecond scale ...
Anybody know about spectroscopy with a diffraction grating and the naked eye? I've had success recognizing simple atomic spectra (copper, zinc, mercury, and...
You have an advantage. You have the diffraction grating. It used to be done with a prism. In a message dated 1/14/02 8:53:01 AM Pacific Standard Time, ... ...
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