Challenges in Phase Plate Product Development

Autor:	Bart Buijsse, Kasim Sader, Gijs van Duinen, Radostin Danev
Rok vydání:	2014
Předmět:	Physics business.industry Phase contrast microscopy media_common.quotation_subject Phase (waves) Function (mathematics) law.invention Phase plate Amplitude Optics law Contrast (vision) business Instrumentation media_common
Zdroj:	Microscopy and Microanalysis. 20:218-219
ISSN:	1435-8115 1431-9276
Popis:	The use of a phase plate in electron microscopy has shown renewed interest, triggered by a publication on this topic in 2001 by Danev and Nagayama [1]. This interest can be understood from the fact that many samples that are studied in TEM are weak phase objects. The use of a phase plate is the obvious method of choice to convert otherwise invisible phase modulations into visible amplitude modulations in the detected intensity profile. A phase plate can provide in-focus phase contrast, unlike the conventional method where a strong defocus is needed to generate contrast at low spatial resolutions, with the added consequence of introducing contrast reversals as a function of frequency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5d26cb8f200213bf54024cf930ac6ed9 https://doi.org/10.1017/s1431927614002815 Zobrazit plný text záznamu