A5002541672- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Ga2O3 and related materials
- Graphene research and applications
- Advanced Battery Materials and Technologies
- Mesoporous Materials and Catalysis
- Protein purification and stability
- Diatoms and Algae Research
- Electrocatalysts for Energy Conversion
- Human Mobility and Location-Based Analysis
- 2D Materials and Applications
- Advancements in Battery Materials
- Advanced battery technologies research
- Smart Cities and Technologies
Samsung (South Korea)
2025
University College London
2005-2024
Seoul National University
2023
Nanyang Technological University
2006
C-axis vertically aligned ZnO nanorod arrays were synthesized on a thin film through simple hydrothermal route. The nanorods have diameter of 30–100 nm and length about several hundred nanometres. gas sensor fabricated from showed high sensitivity to H2 room temperature maximum at 250 °C detection limit 20 ppm. In addition, the also exhibited excellent responses NH3 CO exposure. Our results demonstrate that hydrothermally grown are very promising for fabrication cost effective performance sensors.
Bottom-up electrochemical synthesis of atomically thin materials is desirable yet challenging, especially for non-van der Waals (non-vdW) materials. Thicknesses below a few nanometers have not been reported yet, posing the question how can non-vdW be electrochemically synthesized. This important as with (sub-)unit-cell thickness often show remarkably different properties compared to their bulk form or films several thickness. Here, straightforward method utilizing angstrom-confinement...
Etching characteristics of tungsten (W), silicide (W3Si2), and oxide (WO3) by energetic trifluorocarbon (CF3+) argon (Ar+) ion irradiation were examined with the use mass-selected mono-energetic beams in an energy range between 500 4000 eV. It is found that etching yield W CF3+ notably higher than Ar+ when their energies are same sufficiently high, probably because formation volatile fluoride (WFx) species case irradiation. Similarly, WO3 also to be much In contrast, yields W3Si2 similar. On...
SnO2 thin films were deposited by RF inductively coupled plasma enhanced chemical vapour deposition and then the as-deposited immersed in for post-treatment. Uniform nanorods grown situ from during treatment formed a hybrid structure of nanorod consisting one-dimensional embedded two-dimensional film matrix. The growth follows sputtering redeposition mechanism. Due to intrinsically small grain size high surface-to-volume ratios associated with nanorods, showed much higher sensitivity at...
Successful synthesis of silica shells templated by polypeptide spheres stabilized citric acid inspired us to explore the possibility realizing aqueous self-assembly metal oxides using same template. As a specific case in present study, we have begun with tin (IV) oxide. Initially, failed control assembly process due strong hydrolysis Sn4+ ions and agglomeration hydrates. After modification proper amount which was trapped onto surface hydrates through chelating bond between RCOO− groups ions,...