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Novel Approach to Synthesize Nanostructured Gallium Oxide for Devices Operating in Harsh Environmental Conditions

Author

Listed:
  • Badriyah Alhalaili

    (Nanotechnology and Advanced Materials Program, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait)

  • Ruxandra Vidu

    (Faculty of Materials Science and Engineering, University POLITEHNICA of Bucharest, 060042 Bucharest, Romania
    Department of Electrical and Computer Engineering, University of California Davis, Davis, CA 95616, USA)

  • Ileana Nicoleta Popescu

    (Faculty of Materials Engineering and Mechanics, Valahia University of Targoviste, 13 Aleea Sinaia Street, 130004 Targoviste, Romania
    The Scientific and Technological Multidisciplinary Research Institute (ICSTM-UVT), Valahia University of Targoviste, 13 Aleea Sinaia Street, 130004 Targoviste, Romania)

  • Dhanu Radha Samyamanthula

    (Water Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait)

  • M. Saif Islam

    (Department of Electrical and Computer Engineering, University of California Davis, Davis, CA 95616, USA)

Abstract

The importance of Ga 2 O 3 -based material for harsh environmental applications has attracted the interest of researchers in exploring various fabrication and growth techniques of Ga 2 O 3 -based nanomaterials using effective and low-cost processes. Herein, a demonstration to improve the wettability of liquid gallium on a rough silicon surface is presented. To control the roughness process, the silicon surface was patterned and groove-shape structures on the silicon were created using a photoelectrochemical (PEC) etching technique. Gallium oxide nanostructures were grown by thermal oxidation from liquid Ga in the presence and the absence of a silver thin film used as a catalyst. Scanning Electron Microscopy (SEM) was used to observe the morphology of the nanostructures grown on the roughed surface of the silicon substrate. The conformal deposition of Ga 2 O 3 nanostructures inside the grooves of the PEC etched silicon surface was observed. The presence of Ag catalyst was found to completely change the morphology of Ga 2 O 3 . This method is recommended for the sustainable and low-cost synthesis of nanostructured gallium oxide for applications, including gas sensing.

Suggested Citation

  • Badriyah Alhalaili & Ruxandra Vidu & Ileana Nicoleta Popescu & Dhanu Radha Samyamanthula & M. Saif Islam, 2021. "Novel Approach to Synthesize Nanostructured Gallium Oxide for Devices Operating in Harsh Environmental Conditions," Sustainability, MDPI, vol. 13(18), pages 1-10, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:18:p:10197-:d:634134
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    1. Badriyah Alhalaili & Ileana Nicoleta Popescu & Carmen Otilia Rusanescu & Ruxandra Vidu, 2022. "Microfluidic Devices and Microfluidics-Integrated Electrochemical and Optical (Bio)Sensors for Pollution Analysis: A Review," Sustainability, MDPI, vol. 14(19), pages 1-38, October.

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