Cambridge 7th to 9th September
article posted 04 Apr 2015
Working at Glass Expert Laboratory, Physics and Engineering Program, Department of Science Service
Graduated Doctor of Science (dr.rer.nat) in glass chemistry from Otto-Schott Institute, Friedrich-Schiller-Universität Jena 2010.
Responsible for glass research and testing to support the glass industries in Thailand. The current project includes improving glass melting efficiency, color controlling and improving properties of glass.
Spectroscopic studies of neodymium doped soda-lime silicate glass
Ekarat Meechoowas*, Parida Jampeeruang, Kanit Tapasa and Tepiwan Jitwatcharakomol
Glass Expert Laboratory, Physic and Engineering Program, Department of Science Service, Ratchathewi, Bangkok, Thailand 10400
In order to prepare the glass filter to use as a control sample for the spectroscopic measurement,
the different amount of neodymium oxide (Nd2
doped soda-lime silicate (74SiO2
glasses were prepared with 0.125 0.25 0.5 and 1.0 (mol%). The glasses were melted
twice in platinum crucibles at 1500 ºC to avoid bubbles and annealed at 550 ºC. The
thermal and optical properties of glasses were investigated. The spectra of these
glasses were characterized by two different UV/Vis spectrophotometers, namely
double-beam photometer and diode-array spectrometer. The results showed the intensity
of absorption peak depending on the concentration and the similar peak positions for both
spectrophotometers. The glasses were kept in desiccators for 6 months and measured once
a week to verify the repeatability. The found percentage of relative standard deviation was
less than 5%. The glasses with high neodymium concentration (0.5 and 1.0 mol%) presented
strong and shape absorption peaks and were suitable for being control samples.
The statistic calculation showed insignificant changes of spectroscopic overtime.
The soda-lime silicate glass doped neodymium is the alternative way to produce the
self-control sample for the spectrophotometer.