WEAK PHASE, WEAK AMPLITUDE OBJECT DETERMINATION IN STEM USING QUADRANT DETECTORS: RESULTS OF COMPUTER SIMULATIONS

L. M. Cheng; R. E. Burge

WEAK PHASE, WEAK AMPLITUDE OBJECT DETERMINATION IN STEM USING QUADRANT DETECTORS: RESULTS OF COMPUTER SIMULATIONS

L. M. Cheng
, R. E. Burge

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

A new method of solving the complex transmittance function of a weak object, proposed for the scanning transmission electron microscope (STEM) using images obtained by four quadrant detectors, is discussed and tested using computer simulated images. The effects of noise on the method are considered. Satisfactory image reconstructions are found for phase steps less than equivalent to 0. 2 rad. and amplitude transmission greater than equivalent to 0. 9.

Original language	English
Pages (from-to)	229-246
Journal	Optik (Jena)
Volume	68
Issue number	3
Publication status	Published - Oct 1984
Externally published	Yes

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title = "WEAK PHASE, WEAK AMPLITUDE OBJECT DETERMINATION IN STEM USING QUADRANT DETECTORS: RESULTS OF COMPUTER SIMULATIONS",

abstract = "A new method of solving the complex transmittance function of a weak object, proposed for the scanning transmission electron microscope (STEM) using images obtained by four quadrant detectors, is discussed and tested using computer simulated images. The effects of noise on the method are considered. Satisfactory image reconstructions are found for phase steps less than equivalent to 0. 2 rad. and amplitude transmission greater than equivalent to 0. 9.",

author = "Cheng, \{L. M.\} and Burge, \{R. E.\}",

year = "1984",

month = oct,

language = "English",

volume = "68",

pages = "229--246",

journal = "Optik (Jena)",

issn = "0030-4026",

publisher = "Elsevier GmbH",

number = "3",

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TY - JOUR

T1 - WEAK PHASE, WEAK AMPLITUDE OBJECT DETERMINATION IN STEM USING QUADRANT DETECTORS

T2 - RESULTS OF COMPUTER SIMULATIONS

AU - Cheng, L. M.

AU - Burge, R. E.

PY - 1984/10

Y1 - 1984/10

N2 - A new method of solving the complex transmittance function of a weak object, proposed for the scanning transmission electron microscope (STEM) using images obtained by four quadrant detectors, is discussed and tested using computer simulated images. The effects of noise on the method are considered. Satisfactory image reconstructions are found for phase steps less than equivalent to 0. 2 rad. and amplitude transmission greater than equivalent to 0. 9.

AB - A new method of solving the complex transmittance function of a weak object, proposed for the scanning transmission electron microscope (STEM) using images obtained by four quadrant detectors, is discussed and tested using computer simulated images. The effects of noise on the method are considered. Satisfactory image reconstructions are found for phase steps less than equivalent to 0. 2 rad. and amplitude transmission greater than equivalent to 0. 9.

UR - https://www.scopus.com/pages/publications/0021504099

UR - https://www.scopus.com/pages/publications/0021504099#tab=impact

M3 - RGC 21 - Publication in refereed journal

SN - 0030-4026

VL - 68

SP - 229

EP - 246

JO - Optik (Jena)

JF - Optik (Jena)

IS - 3

ER -

WEAK PHASE, WEAK AMPLITUDE OBJECT DETERMINATION IN STEM USING QUADRANT DETECTORS: RESULTS OF COMPUTER SIMULATIONS

Abstract

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