Van Hieu Nguyen

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Ultrasensitive and selective hydrogen gas sensor is vital component in safe use of hydrogen that requires a detection and alarm of leakage. Herein, we fabricated a H2 sensing devices by adopting a simple design of planar-type structure sensor in which the heater, electrode, and sensing layer were patterned on the front side of a silicon wafer. The SnO2 thin(More)
In this paper, the authors present some problems occurring during UHF RFID tag design and fabrication process. A tag antenna must be conjugately matched to a tag IC chip (on the example of ST Microelectronics XRAG2 chip) at the resonant frequency with larger bandwidth and have dipole radiation patterns with sufficient gain. Another example of RFID tag was(More)
Authors' contributions This work was carried out in collaboration between all authors. Authors MJ and HN designed the study, performed the experiments, wrote the protocol and wrote the first draft of the manuscript. Authors MJ, DHN, VDN and HN managed the literature searches, performed the spectroscopy and microscopy analysis. All authors read and approved(More)
The aim of this topical review is a systematic and concise presentation of the results of a series of theoretical works on the quantum dynamics of two-spin-qubit systems towards the elaboration of a physical mechanism of the quantum information transfer between two spin-qubits. For this purpose the main attention is paid to exactly solvable models of(More)
Monitoring toxic chlorine (Cl2) at the parts-per-billion (ppb) level is crucial for safe usage of this gas. Herein, ZnO, WO3, and SnO2 nanowire sensors were fabricated using an on-chip growth technique with chemical vapor deposition. The Cl2 gas-sensing characteristics of the fabricated sensors were systematically investigated. Results demonstrated that(More)
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