On the Possibilities of Detecting Surface Charges with Second Harmonic Generation and Optical Diagnostics of Polymeric Insulators
(2003)- Abstract
- Optical second-harmonic generation can be a sensitive probe of atoms and molecules at a
surface or interface. For this reason, the method was chosen to study surface charges. Our
measurements have been limited by large fluctuations in the frequency-doubled light and
the mean value of the signals did not give any consistent changes due to changes in the
surface charge. A solid metal constituted the sample but if the goal of the experiment had
been to study any material configuration a silver-mica capacitor would have been a good
choice due to earlier research.
As the original intention of the project was to detect surface charges on polymeric
insulators a natural... (More) - Optical second-harmonic generation can be a sensitive probe of atoms and molecules at a
surface or interface. For this reason, the method was chosen to study surface charges. Our
measurements have been limited by large fluctuations in the frequency-doubled light and
the mean value of the signals did not give any consistent changes due to changes in the
surface charge. A solid metal constituted the sample but if the goal of the experiment had
been to study any material configuration a silver-mica capacitor would have been a good
choice due to earlier research.
As the original intention of the project was to detect surface charges on polymeric
insulators a natural generalisation of the project has been to characterise polymeric
insulator materials and we have started this by studying biological growths, like algae and
fungi. Both are crucial for the performance of the material. In cooperation with Andreas
Demfalk at the Chalmers University of Technology the presence of algae and fungi could
readily be remotely detected. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2259985
- author
- Bengtsson, Magnus LU
- supervisor
- organization
- publishing date
- 2003
- type
- Thesis
- publication status
- published
- subject
- language
- English
- LU publication?
- yes
- id
- c54164ff-7003-4a45-9578-2772797640bc (old id 2259985)
- date added to LUP
- 2016-04-04 14:20:00
- date last changed
- 2018-11-21 21:19:42
@misc{c54164ff-7003-4a45-9578-2772797640bc,
abstract = {{Optical second-harmonic generation can be a sensitive probe of atoms and molecules at a<br/><br>
surface or interface. For this reason, the method was chosen to study surface charges. Our<br/><br>
measurements have been limited by large fluctuations in the frequency-doubled light and<br/><br>
the mean value of the signals did not give any consistent changes due to changes in the<br/><br>
surface charge. A solid metal constituted the sample but if the goal of the experiment had<br/><br>
been to study any material configuration a silver-mica capacitor would have been a good<br/><br>
choice due to earlier research.<br/><br>
As the original intention of the project was to detect surface charges on polymeric<br/><br>
insulators a natural generalisation of the project has been to characterise polymeric<br/><br>
insulator materials and we have started this by studying biological growths, like algae and<br/><br>
fungi. Both are crucial for the performance of the material. In cooperation with Andreas<br/><br>
Demfalk at the Chalmers University of Technology the presence of algae and fungi could<br/><br>
readily be remotely detected.}},
author = {{Bengtsson, Magnus}},
language = {{eng}},
note = {{Licentiate Thesis}},
title = {{On the Possibilities of Detecting Surface Charges with Second Harmonic Generation and Optical Diagnostics of Polymeric Insulators}},
url = {{https://lup.lub.lu.se/search/files/6336047/2297052.pdf}},
year = {{2003}},
}