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Your search keyword '"Pakawanit, Phakkhananan"' showing total 25 results
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25 results on '"Pakawanit, Phakkhananan"'

9. The role of γ-C 2H 5NO 2 as a new transient liquid phase in cold sintering process of BaTiO 3 composites

Author

Noisak, Jitrawan, additional, Ieamviteevanich, Pimchanok, additional, Charoonsuk, Thitirat, additional, Pakawanit, Phakkhananan, additional, Pinpru, Nattapong, additional, Vittayakorn, Wanwilai, additional, Maluangnont, Tosapol, additional, Seeharaj, Panpailin, additional, Bongkarn, Theerachai, additional, Chiu, Te-Wei, additional, and Vittayakorn, Naratip, additional

Published
2024
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17. Improvements of Flexural Properties and Thermal Performance in Thin Geopolymer Based on Fly Ash and Ladle Furnace Slag Using Borax Decahydrates

Author

Yong-Sing, Ng, primary, Yun-Ming, Liew, additional, Cheng-Yong, Heah, additional, Abdullah, Mohd Mustafa Al Bakri, additional, Pakawanit, Phakkhananan, additional, Vizureanu, Petrica, additional, Khalid, Mohd Suhaimi, additional, Hui-Teng, Ng, additional, Yong-Jie, Hang, additional, Nabiałek, Marcin, additional, Pietrusiewicz, Paweł, additional, Garus, Sebastian, additional, Sochacki, Wojciech, additional, and Śliwa, Agata, additional

Published
2022
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23. Frictional heat-assisted performance enhancement in dynamic Schottky contact of Al/Ag2Se-based tribovoltaic nanogenerator

Author

Worathat, Supakarn, Pharino, Utchawadee, Pakawanit, Phakkhananan, Rattanachata, Arunothai, Muanghlua, Rangson, Hajra, Sugato, Kim, Hoe Joon, Sriphan, Saichon, and Vittayakorn, Naratip

Abstract

The tribovoltaic nanogenerator (TVNG) has evolved in recent years as a novel type of nanogenerator designed to address the limitations of the standard triboelectric nanogenerator in terms of output signal and charge generation. Besides the outstanding characteristics, the tribovoltaic effect can also well be coupled with another effect to further boost the output performance. In this work, we proposed firstly a frictional heat-assisted performance enhancement in dynamic Schottky contact from the rubbing between n-type silver selenide (Ag2Se) and aluminum. The chemical composition and physical characteristics of the Ag2Se ceramic were analyzed using X-ray diffraction, scanning electron microscopy, and Synchrotron X-ray tomography techniques. UV–Vis spectroscopy and UPS were also utilized in order to validate the semiconducting property of the n-type Ag2Se ceramic. Moreover, the presence of the Schottky junction was demonstrated through the analysis of the current-bias voltage characteristic curve of the Ag2Se/aluminum (Al) contact under varying stress and temperature conditions. The built-in electric field plays a crucial part in the tribovoltaic effect by efficiently transferring the excited carriers to an external load through sliding contact between Ag2Se and Al. Demonstrating the synergy between tribovoltaic and thermoelectric effects becomes achievable through the excellent thermoelectric property of Ag2Se. Herein, the proposed TVNG generated a peak output voltage and current of around 0.7 V and 24.8 nA, respectively, achieving a maximum output power of 12.6 nW at a load resistance of 10 kΩ. The influence of frictional heat on the output performance of the proposed TVNG was well demonstrated by the thermal-induced voltage and enhanced electrical output from continuous sliding. The concepts given in this study establish the basis for the progress of effective energy collection employing semiconducting materials and the advancement of flexible harvesting and sensing device development in the future.

Published
2024
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25. Characterization of 0.93Pb(Zn1/3Nb2/3)O3–0.07BaTiO3 ceramics derived from a novel Zn3Nb2O8 B-site precursor

Author

Pakawanit, Phakkhananan, Ngamjarurojana, Athipong, Prasatkhetragarn, Anurak, and Ananta, Supon

Subjects
*ZINC oxide, *BARIUM titanate, *NIOBIUM oxide, *CERAMIC metals, *PEROVSKITE, *RELAXOR ferroelectrics, *MICROFABRICATION
Abstract

Abstract: In this work, perovskite relaxor ferroelectric lead zinc niobate–barium titanate (0.93PZN–0.07BT) ceramics were fabricated by using a combination of Zn3Nb2O8 B-site precursor and reactive sintering process. The effects of sintering condition on phase formation, densification, microstructure and dielectric properties of the final products have been investigated using a combination of X-ray diffraction, Archimedes density measurement, scanning electron microscopy and dielectric measurement techniques. It is seen that pure perovskite phase of PZN-BT solid solutions can be achieved in all samples. Density and average grain size values of sintered samples increased with sintering temperatures and dwell time. With appropriate sintering at 1150°C for 5h, 0.93PZN–0.07BT ceramics exhibited a peak dielectric constant of 11,497 and dielectric loss of 0.05 at the Curie temperature of 99°C measured at 1kHz. [Copyright &y& Elsevier]

Published
2013
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