HV-TEM IN-SITU INVESTIGATIONS OF THE TIP SHAPE OF INDIUM LIQUID-METAL ION EMITTER

被引：26

作者：

PRAPROTNIK, B

DRIESEL, W

DIETZSCH, C

NIEDRIG, H

机构：

[1] TECH UNIV BERLIN,INST OPT,STR 17,JUNI 135,D-10623 BERLIN,GERMANY

[2] MAX PLANCK INST MIKROSTRUKTURPHYS HALLE,D-06120 HALLE,GERMANY

来源：

SURFACE SCIENCE | 1994年 / 314卷 / 03期

关键词：

D O I：

10.1016/0039-6028(94)90237-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An indium liquid metal ion emitter has been observed in-situ in the Halle 1 MeV electron transmission microscope. The investigations have shown deviations from the theoretical shape of the Taylor cone. A linear dependence of the opening angle and the extension of the apex from the emission current was stated. With emission currents greater than 10 muA an extension of the cone's apex had been observed. For the first time the dynamical behaviour of a liquid metal ion emitter had been investigated. Microdroplet emission had been observed in the cone's surrounding. The radii of microdroplets show a dependence from the field strength and vary between 0.04 and 1.4 mum. Some spatial instabilities of the Taylor cone had been noticed.

引用

页码：353 / 364

页数：12

共 24 条

[1] INSITU HIGH-VOLTAGE TEM OBSERVATION OF AN ELECTROHYDRODYNAMIC (EHD) ION-SOURCE [J].

BENASSAYAG, G ;

SUDRAUD, P ;

JOUFFREY, B .

ULTRAMICROSCOPY, 1985, 16 (01) :1-8

[2]

DRIESEL W, IN PRESS

[3]

FORBES R, COMMUNICATION

[4] LIQUID-METAL ION-SOURCE THEORY - ELECTROHYDRODYNAMICS AND EMITTER SHAPE [J].

FORBES, RG ;

LJEPOJEVIC, NN .

SURFACE SCIENCE, 1992, 266 (1-3) :170-175

[5] CALCULATION OF THE SHAPE OF THE LIQUID CONE IN A LIQUID-METAL ION-SOURCE [J].

FORBES, RG ;

LJEPOJEVIC, NN .

SURFACE SCIENCE, 1991, 246 (1-3) :113-117

[6] MECHANISM OF LIQUID-METAL ELECTRON AND ION SOURCES [J].

GOMER, R .

APPLIED PHYSICS, 1979, 19 (04) :365-375

[7]

Hampel C. A., 1968, ENCY CHEM ELEMENTS

[8] SIMULATIONS OF THE CURRENT AND TEMPERATURE-DEPENDENCE OF LIQUID-METAL ION-SOURCE ENERGY-DISTRIBUTIONS [J].

HORNSEY, R .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1991, 30 (02) :366-375

[9]

HORNSEY R, 1990, JPN J APPL PHYS, V6, pL1007

[10] ABOUT THE STABILITY AND STRUCTURE OF METALLIC CLUSTERS PRODUCED BY A LMIS [J].

JOYES, P ;

VANDEWALLE, J ;

COLLIEX, C .

ULTRAMICROSCOPY, 1986, 20 (1-2) :65-70

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