| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Riley, Brian J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Insights on the structure and properties of sodium iron phosphate glasses from molecular dynamics simulationscitations
- 2018Final report: Understanding influence of thermal history and glass chemistry on kinetics of phase separation and crystallization in borosilicate glass-ceramic waste forms for aqueous reprocessed high level waste
- 2017Glass Transition Temperature- and Specific Volume- Composition Models for Tellurite Glasses
- 2017Apatite and sodalite based glass-bonded waste forms for immobilization of 129I and mixed halide radioactive wastes
- 2013Sublimation-Condensation of Multiscale Tellurium Structurescitations
- 2009DC Ionization Conductivity of Amorphous Semiconductors for Radiation Detection Applicationscitations
- 2008ASGRAD FY07 Annual Report
- 2007FY06 Annual Report: Amorphous Semiconductors for Gamma Radiation Detection (ASGRAD)
- 2007Differential etching of chalcogenides for infrared photonic waveguide structurescitations
- 2006Summary of Chalcogenide Glass Processing: Wet-Etching and Photolithography
- 2006Pressure-temperature dependence of nanowire formation in the arsenic-sulfur system
- 2005FY 2005 Miniature Spherical Retroreflectors Final Report
- 2004FY 2004 Infrared Photonics Final Report
- 2004Chalcogenide glasses and structures for quantum sensing
Places of action
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article
Differential etching of chalcogenides for infrared photonic waveguide structures
Abstract
Chemical etching rates for two different chalcogenide glass compositions (As2S3 and As24S38Se38) were studied using sodium hydroxide based etchant solutions. Etching was performed using a variation of standard photolithographic masking and wet-etching techniques. Variations in etch rate with NaOH concentration and glass composition were observed. The depth of etch was characterized using an optical profilometer. Etch rate differences as large as three orders of magnitude between these two glasses were observed at low NaOH concentration (0.053 M). We present a single variable etch rate curve of etch depth per time (nm/s) versus NaOH overall solution concentration (in M) for these two different chalcogenide glasses (As2S3 and As24S38Se38). This technology shows promise for fabricating highly asymmetrical photonic structures and has potential applications in fabricating novel photonic bandgap (PBG) structures that will function in the long-wave infrared (LWIR) regime.