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311 results on '"Tan, S.L."'

24. Magnetic properties of lateral 'antidot' arrays

Author

Jalil, M.B.A., Phoa, S.L.A., Tan, S.L., and Adeyeye, A.O.

Subjects
Magnetism -- Research, Anisotropy -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Micromagnetic and transport modeling are performed with a ferromagnetic film with an etched array of square holes ('antidots'). In the submicron-size range, the presence of antidots significantly increases the coercivity of the film. The antidot film shows a complex magnetoresistance (MR) behavior when the field direction is rotated due to the interplay between the induced easy axes along the antidot edges and the field and current directions. The MR response can be further modified by changing the composition of the film and antidot and by introducing an insulating barrier around the antidots. Index Terms--Anisotropic magnetoresistance, antidot array, geometry-induced anisotropy, micromagnetic simulation.

Published
2002

25. Body composition, sarcopenia and frailty in a multi-ethnic Asian cohort with Parkinson’s disease

Author

Tan, A.H., primary, Hew, Y.C., additional, Lim, S.Y., additional, Mohd Ramli, N., additional, Kamaruzzaman, S.B., additional, Ang, B.H., additional, Tan, J.Y., additional, Azhan, A., additional, Tay, T.K., additional, Tan, S.L., additional, New, R.P., additional, Eng, J.Y., additional, Fadzli, F., additional, Tan, M.P., additional, Moy, F.M., additional, Mahadeva, S., additional, Grossmann, M., additional, and Lang, A., additional

Published
2018
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30. Absolute frequency measurement of the R(12) 26-0 and R(106) 28-0 transitions in /sup 127/I/sub 2/ at /spl lambda/=543 nm

Author

Ma, L.S., Picard, S., Zucco, M., Chartier, J-M., Robertsson, L., Balling, P., Krin, P., Qian, J., Liu, Z., Shi, C., Alonso, M.V., Xu, G., Tan, S.L., Nyholm, Kaj, Henningsen, J., and Hald, J.

Subjects
recommended radiation, 543 nm, wavelength standard, absolute frequency measurement, optical comb
Abstract

A direct phase coherent determination of the absolute frequency of the a 15 component in the R(12) 26-0 and b 10 component in the R(106) 28-0 transitions in 127 I 2 at 543 nm has been made at the International Bureau of Weights and Measures. Lasers from the Czech Metrology Institute (Czech Republic), the National Institute of Metrology (China), the Centro Nacional de Metrologia (Mexico), the Standards, Productivity and Innovation Board (Singapore), the Centre for Metrology and Accreditation (Finland), the Danish Institute of Fundamental Metrology (Denmark), the National Physical Laboratory (U.K.), and the International Bureau of Weights and Measures took part. The mean frequency values found are f(a 15 )=551579856480.4 kHz, u c =4.8 kHz and f(b 10 )=551580162397.1 kHz, u c =4.6 kHz for the current group of lasers, where u c is the combined standard uncertainty. This constitutes a 30-fold improvement in accuracy for this radiation, which is recommended for the realization of the definition of the meter. If only lasers equipped with an iodine cell temperature control are considered, the group of lasers shows a dispersion of 7 kHz. This value is indicative of the level of reproducibility that can be expected at present for this type of standard.

Published
2006
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