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Type Kratschmer, E.; Kim, H. S.; Thomason, R., M G; Lee, K. Y.; Rishton, S. A.; Yu, M. L.; Chang, P., T H
  Publication Sub-40 nm resolution 1 keV scanning tunneling microscope field-emission microcolumn Volume Journal Article
Pages 1994
  Abstract Journal of Vacuum Science & Technology A  
  Corporate Author J. Vac. Sci. Technol. A  
Publisher B12  
Editor
  Summary Language 3503-3507 Series Editor Scanning Tunnelling Microscopy  
Abbreviated Series Title
  Series Issue ISSN  
Medium
  Expedition Notes  
Call Number  
Contribution Id  
Serial URL ISBN  
no 3354
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Kwon, H.; Barlat, F.; Lee, M.; Chung, Y.; Uhm, S. Influence of Tempering Temperature on Low Cycle Fatigue of High Strength Steel Journal Article 2014 ISIJ International 54 4 979-984 In this study, the mechanical and low cycle fatigue properties for a heat-treatment steel subjected to quenching and tempering (QT) were evaluated. The steel had a modified chemical composition with respect to a conventional material and was subjected to tempering at various temperatures. It was shown that the material tempered at 250°C exhibited superior fatigue properties in the short life regions. Carbon atom clusters in concentration of 18 at% in martensite were observed using atom probe tomography (APT) for the steel tempered at 250°C. It is believed that these clusters contribute to the improvement of fatigue properties by hindering the motion of dislocations. no NU @ karnesky @ 11486
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Lagow, B.W.; Robertson, I.M.; Jouiad, M.; Lassila, D.H.; Lee, T.C.; Birnbaum, H.K. Observation of dislocation dynamics in the electron microscope Journal Article 2001 Materials Science And Engineering A Mater. Sci. Eng. A 309-310 445-450 Deformation experiments performed in situ in the transmission electron microscope have led to an increased understanding of dislocation dynamics. To illustrate the capability of this technique two examples will be presented. In the first example, the processes of work hardening in Mo at room temperature will be presented. These studies have improved our understanding of dislocation mobility, dislocation generation, and dislocation-obstacle interactions. Zn the second example, the interaction of matrix dislocations with grain boundaries will be described. From such studies predictive criteria for slip transfer through grain boundaries have been developed. 0921-5093 WOS:000169044600089 no NU @ m-krug @ 10533
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Lee, B.; Barasch, E. F.; Mazumdar, T.; McIntyre, P. M.; Pang, Y.; Trost, H. - J. Development of knife-edge field emission cathodes on (110) silicon wafers Journal Article 1993 Applied Surface Science Appl. Surf. Sci. 67 Field Emission Microscopy no 5390
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Lee, B.; Elliott, T. S.; Mazumdar, T. K.; McIntyre, P. M.; Pang, Y.; Trost, H. - J. Knife-edge thin film field emission cathodes on (110) silicon wafers Journal Article 1994 Journal of Vacuum Science & Technology A J. Vac. Sci. Technol. A B12 644-647 Field Emission no 3238
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Lee, B.; Min, S. - W.; Bang, J. - H.; Hwang, D. - S.; Kwon, T. - J. Modeling of tunneling current at field emission display tips: for non-metallic tips and an analytic method of solving for electric fields Journal Article 1996 Int. Vac. Microelectron. Conf., 9th (1996), 97-101 Publisher: Nevskii Kur'er, St. Petersburg, Russia 97-101 Field Emission no 2011
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Lee, B.C.; Park, J.K. Effect of the addition of Ag on the strengthening of Al3Li phase in Al-Li single crystals Journal Article 1998 Acta Materialia 46 12 4181-4187 The variation of the critical resolved shear stress as a function of aging condition has been measured in ternary Al-~(1.9-2.0) wt% Li-~0.4 wt% Ag single crystals and has been analyzed using the same version of order-hardening theory as in our previous work in binary single crystals. The result showed that the antiphase boundary energy of the Al3Li lattice on {111} definitively increases from about 0.118 J/m2 in binary crystals to 0.128+/-0.012 J/m2 in ternary crystals, in good agreement with the analysis of the transition behavior from shearing to looping and of the dislocation pair spacings. A strong segregation tendency of Ag into the Al3Li lattice is believed to be responsible for this increment. Our previous result of [gamma]apb (0.118+/-0.006 J/m2) in binary crystals is, although unlikely from the recent suggestion of Nembach, the best value one can obtain from the recent knowledge of order-hardening theory. This is slightly larger than that (about 0.100 J/m2) obtained from the analysis of the transition from shearing to looping and somewhat larger than the result (about 0.085 J/m2) of the first-principles calculation. Three factors are discussed as principal causes of a possibility of an overestimation of [gamma]apb on applying order-hardening theory. no NU @ karnesky @ 9941
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Lee, Byeong-Joo; Jang, Je-Wook A modified embedded-atom method interatomic potential for the Fe–H system Journal Article 2007 Acta Materialia 55 20 6779-6788 Modified embedded-atom method; Iron–hydrogen alloys; Atomistic simulation; Molecular dynamics; Lattice defect A modified embedded-atom method (MEAM) interatomic potential for the Fe–H binary system has been developed using previously developed MEAM potentials of Fe and H. The potential parameters were determined by fitting to experimental data on the dilute heat of solution of hydrogen in body-centered cubic (bcc) and face-centered cubic (fcc) Fe, the vacancy–hydrogen binding energy in bcc Fe, and to a first-principles calculation for the lattice parameter and bulk modulus of a hypothetical NaCl-type FeH. The potential accurately reproduces the known physical properties of hydrogen as an interstitial solute element in bcc and fcc Fe. The applicability of the potential to atomistic approaches for investigating interactions between hydrogen atoms and other defects such as vacancies, dislocations and grain boundaries, and also for investigating the effects of hydrogen on various deformation and mechanical behaviors of iron is demonstrated. 1359-6454 no NU @ karnesky @ 11399
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Lee, C. G.; Ahn, H. Y.; Lee, J. D. Scaling-down of cone-like field emitter using LOCOS Journal Article 1995 Tech. Dig. 401-404 Field Emission no 2460
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Lee, C. G.; Ahn, H. Y.; Lee, J. D.; Park, H. S. A new approach to manufacturing field emitter arrays with submicron gate apertures Journal Article 1995 Tech. Dig. 14-17 Field Emission no 2841
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