Abstract
A mode-switching servo is widely used in solid immersion lens (SIL)-based near-field recording (NFR) systems to control the air gap between the bottom surface of the SIL and the top surface of the rotating media. In the mode-switching servo, it is very important to reduce the initial overshoot in the near field region, as this overshoot can cause collisions between the SIL and the media, and increase the settling time required for the SIL to be initially moved to the final air gap. In this paper, the mode-switching servo with a brake pulse is proposed to reduce the initial overshoot and settling time. The effectiveness of the proposed method is proved by experiments of which results show that the minimum air gap due to the initial overshoot is improved from 6.86 to 18.73 nm and the settling time is reduced from 30 to 4.5 ms.
| Original language | English |
|---|---|
| Pages (from-to) | 309-315 |
| Number of pages | 7 |
| Journal | Microsystem Technologies |
| Volume | 16 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2010 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Hardware and Architecture
- Electrical and Electronic Engineering
Cite this
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Improved gap servo system using a brake pulse for a SIL-based near-field recording system. / Kim, Jung Gon; Kang, Min Seok; Shin, Won Ho; Park, No Cheol; Yang, Hyun Seok; Park, Young Pil; Lee, Jinkyung; Jeong, Ansik; Shin, Jonghyun; Lee, Kyunggeun.
In: Microsystem Technologies, Vol. 16, No. 1-2, 01.01.2010, p. 309-315.Research output: Contribution to journal › Article
TY - JOUR
T1 - Improved gap servo system using a brake pulse for a SIL-based near-field recording system
AU - Kim, Jung Gon
AU - Kang, Min Seok
AU - Shin, Won Ho
AU - Park, No Cheol
AU - Yang, Hyun Seok
AU - Park, Young Pil
AU - Lee, Jinkyung
AU - Jeong, Ansik
AU - Shin, Jonghyun
AU - Lee, Kyunggeun
PY - 2010/1/1
Y1 - 2010/1/1
N2 - A mode-switching servo is widely used in solid immersion lens (SIL)-based near-field recording (NFR) systems to control the air gap between the bottom surface of the SIL and the top surface of the rotating media. In the mode-switching servo, it is very important to reduce the initial overshoot in the near field region, as this overshoot can cause collisions between the SIL and the media, and increase the settling time required for the SIL to be initially moved to the final air gap. In this paper, the mode-switching servo with a brake pulse is proposed to reduce the initial overshoot and settling time. The effectiveness of the proposed method is proved by experiments of which results show that the minimum air gap due to the initial overshoot is improved from 6.86 to 18.73 nm and the settling time is reduced from 30 to 4.5 ms.
AB - A mode-switching servo is widely used in solid immersion lens (SIL)-based near-field recording (NFR) systems to control the air gap between the bottom surface of the SIL and the top surface of the rotating media. In the mode-switching servo, it is very important to reduce the initial overshoot in the near field region, as this overshoot can cause collisions between the SIL and the media, and increase the settling time required for the SIL to be initially moved to the final air gap. In this paper, the mode-switching servo with a brake pulse is proposed to reduce the initial overshoot and settling time. The effectiveness of the proposed method is proved by experiments of which results show that the minimum air gap due to the initial overshoot is improved from 6.86 to 18.73 nm and the settling time is reduced from 30 to 4.5 ms.
UR - http://www.scopus.com/inward/record.url?scp=72149132039&partnerID=8YFLogxK
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U2 - 10.1007/s00542-009-0896-0
DO - 10.1007/s00542-009-0896-0
M3 - Article
AN - SCOPUS:72149132039
VL - 16
SP - 309
EP - 315
JO - Microsystem Technologies
JF - Microsystem Technologies
SN - 0946-7076
IS - 1-2
ER -