http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Field emission from carbon nanotubes for display
Choi,WonBong,Lee,NaeSung,Lee,Young Hee,Kim,JongMin 국립경상대학교 공과대학 부설 첨단소재연구소 1999 尖端素材 Vol.9 No.-
Carbon nanotube (CNT)-based field emission displays (FEDs) have been fabricated using well-aligned nanotubes on a glass substrate by paste squeeze and surface rubbing techniques. The fabricated displays were fully scalable at 415℃ and show a high brightness of 1800 cd/m²at 3.7 V/㎛ from the green phosphor. The turn-on fields of 1 V/㎛ and field emission current of 1.5 mA at 3 V/㎛(J=90㎂/cm²) were observed. The fluctuation of the current was found to be about 7 % over a 4.5-inch cathode area. Large field enhancement factors (17000-33000) and low turn-on field(1V/㎛) were attributed to well-aligned carbon nanotubes and a large number of carbon nanotobes of 5-10/㎛².
Lateral force microscopy in low normal force limit
이현수,이내성,서용호 한국물리학회 2010 Current Applied Physics Vol.10 No.1
We have studied frictional force between SiN tip and Si surface by using lateral force microscopy. The cantilever we have used has very low stiffness of 0.006 N/m, and the normal force acting on the surface was much lower than the attractive force such as van der Waals force. In this low normal force limit, it was found that the frictional force did not depend on the normal force. We suggest a calibration method to estimate the attractive force from the lateral force data in this limit. The estimated attractive force between Si sample and SiN tip with radius of 10 nm was 0.4 nN in flat region and 0.65 nN at the corner of a rectangular hole.
곽정춘,이내성,Goak, Jeung-Choon,Lee, Nae-Sung 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.2
Single walled carbon nanotubes (SWCNTs) can be modified to produce a new concept of hybrid materials by introducing atoms or molecules inside their cylindrical empty space. Such an endohedral doping of the SWCNTs is expected to decisively alter their electronic transport and mechanical properties, In this study, we purified SWCNTs by three-step purification processes and formed the peapod structure by introducing $C_{60}$ fullerenes inside the SWCNTs. $C_{60}$ molecules were observed to be regularly arranged by transmission electron microscopy. In Raman spectra, the radial breathing mode (RBM) rather than the other modes was significantly affected by the endohedral injection of $C_{60}$. The RBM intensity was more greatly reduced in the large-diameter SWCNTs than the small-diameter ones, Raman spectroscopy is expected to be a key technique for analyzing $C_{60}$-encapsulated SWCNTs.