Zobrazeno 1 - 10
of 81
pro vyhledávání: '"S. Singkarat"'
Autor:
S. Natyanum, Kanda Singkarat, Udomrat Tippawan, Harry J. Whitlow, Nitipon Puttaraksa, Somrit Unai, S. Singkarat, L.D. Yu, Nirut Pussadee
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 404:58-64
Developing high technologies but in economic manners is necessary and also feasible for developing countries. At Chiang Mai University, Thailand, we have developed MeV-ion microbeam technology based on a 1.7-MV Tandetron tandem accelerator with our l
Autor:
R. Suwankosum, S. Singkarat, L.D. Yu, Udomrat Tippawan, Michael W. Rhodes, S. Intarasiri, D. Bootkul, S. Rattanarin, D. Suwannakachorn, J. Techarung, B. Phanchaisri, A. Wijaikhum
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 365:414-418
In our efforts in developing ion beam technology for novel applications in biology and gemmology, an economic simple compact ion implanter especially for the purpose was constructed. The designing of the machine was aimed at providing our users with
Autor:
Udomrat Tippawan, S. Singkarat, A. Wijaikhum, S. Intarasiri, D. Bootkul, D. Suwannakachorn, L.D. Yu
Publikováno v:
Applied Surface Science. 310:94-99
Ion implantation technique was applied as an effective non-toxic treatment of the local Thai natural corundum including sapphires and rubies for the enhancement of essential qualities of the gemstones. Energetic oxygen and nitrogen ions in keV range
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 331:108-112
Natural corundum, one of the most important exports of Thailand, is a rare, durable and valuable gemstone. The value of these precious stones is determined by their visual appearances, including brilliance, color, fire (light dispersion) and luster.
Autor:
S. Singkarat, P. Thongkumkoon, B. Phanchaisri, Somboon Anuntalabhochai, K. Prakrajang, P. Thopan, L.D. Yu, K. Sangwijit
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 326:204-208
As a useful ion beam biotechnology, ion-bombardment-induced DNA transfer into bacterial Escherichia coli ( E. coli ) cells has been successfully operated using argon ions. In the process ion bombardment of the bacterial cells modifies the cell envelo
Autor:
Kanda Singkarat, S. Singkarat, Harry J. Whitlow, Nirut Pussadee, Nitipon Puttaraksa, Somrit Unai, Michael W. Rhodes
Publikováno v:
Microelectronic Engineering. 102:18-21
For soft lithography, the conventional negative tone resists, such as SU-8, that are used to create the mold have a number of drawbacks. PMMA, which is normally used as a positive tone resist, can be used as a negative resist by using high-fluence ir
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 282:88-91
This work explored a novel way to synthesize silicon carbide (SiC) nanocrystals for photoluminescence. Carbon ions at 90 keV were implanted in single crystalline silicon wafers at elevated temperature, followed by irradiation using xenon ion beams at
Autor:
Thiraphat Vilaithong, S. Singkarat, Prayoon Songsiriritthigul, T. Kamwanna, C. Thongbai, L.D. Yu
Publikováno v:
Journal of the Korean Physical Society. 59:534-541
The production and the utilization of four fundamental probes, namely, electron, ion, neutron and photon probes, have played a vital role in the research and development in modern science and technology. These probes are generated by various types of
Autor:
Rattanaporn Norarat, Mari Napari, S. Singkarat, Harry J. Whitlow, Mikko Laitinen, Orapin Chienthavorn, Timo Sajavaara, Nitipon Puttaraksa
Publikováno v:
Advanced Materials Research. 254:132-135
The lithographic exposure characteristic of amorphous silica (SiO2) was investigated for 6.8 MeV16O3+ions. A programmable proximity aperture lithography (PPAL) technique was used for the ion beam exposure. After exposure, the exposed pattern was deve
Publikováno v:
Surface and Coatings Technology. 203:2788-2792
Ion implantation was applied as an effective method to gemological modification of Thai local natural corundum including sapphire and ruby for enhancement of the essential qualities of the gemstones. Oxygen and nitrogen ions at medium and low energie