Experiment
NIR spectra of a series of opal (-A and -CT) in ambient conditions and at low temperature (~ -35°C) and/or low pressure (~ 8 mbar)
Sub-Experiment
opal-A 86.2: Tamb, low T, low P
Sub-Experiment
opal-A 785: Tamb, low T, low P
Sub-Experiment
opal-A 1040: Tamb, low T, low P
Sub-Experiment
opal-CT 521: Tamb, low T
Sub-Experiment
opal-CT 1085: Tamb, low T, low P
Sub-Experiment
opal-A 1543a: Tamb, low T
Sub-Experiment
opal-CT 1543b: Tamb, low T, low P
Sub-Experiment
opal-CT 1543d: Tamb, low T, low P
Sub-Experiment
opal-CT 1548: Tamb, low T
Sub-Experiment
opal-CT 1551: Tamb, low T, low P
Sub-Experiment
opal-CT 1552a: Tamb, low T, low P
Sub-Experiment
opal-CT 1552b: Tamb, low T
Sub-Experiment
opal-A 1039: Tamb, low T
Sub-Experiment
opal-CT VTB: Tamb, low P
Sub-Experiment
opal-CT WT86: Tamb, low P
Sub-Experiment
opal-CT YM12: Tamb, low P
Layer
- Name
- Layer #1
- Type of layer
- compact
- Thickness
- 250.0 $\pm$ 5.0 ${\mu}m$
- Texture
- compact glassy
- Type of porosity
- porous
- Formation mode
- mechanical slabing
- Temperature
- 60.0 $\pm$ 5.0 $^{\circ}C$
- Comments
- The rough sample (without any preliminary preparation except cutting) was first placed in an epoxy cylinder, 2.5 cm in diameter. The epoxy was hardened on a hotplate at 60 °C to avoid sample dehydration. The cylinder was polished on one side and then cut parallel to the polished face to obtain a ∼500 mm-thick disk. The second side was polished down to the desired thickness. Finally, the sample was removed by breaking the thin epoxy disk.