User:Alexander.Opolka - Revision history

WikiSysop at 16:36, 24 October 2025

2025-10-24T16:36:22Z

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	[[Category:~~Doktoranden~~ - ~~PhD Students~~]]		[[Category:Ehemalige_Mitarbeiter_-_Former_Employees]]
	[[Category:~~F&E3~~-~~XOM~~]]		[[Category:Ehemalige_Doktoranden_-_Former_PhD_Students]]
	[[Category:KSOP]]

Alexander.Opolka at 09:33, 5 June 2018

2018-06-05T09:33:26Z

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	[[Category:Doktoranden - PhD Students]]		[[Category:Doktoranden - PhD Students]]
	[[Category:F&E3]]		[[Category:F&E3-XOM]]
	[[Category:KSOP]]		[[Category:KSOP]]

Alexander.Opolka at 09:32, 5 June 2018

2018-06-05T09:32:50Z

← Older revision		Revision as of 11:32, 5 June 2018
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	== Alexander Opolka ==		== Alexander Opolka ==

	'''~~Funktionsbereich~~''': [[F&E3-XOM]]		'''Department''': [[F&E3-XOM]]

	'''Field of work''': X-ray lenses		'''Field of work''': X-ray lenses
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	'''E-mail''': alexander.opolka@kit.edu		'''E-mail''': alexander.opolka@kit.edu

	== ~~Tätigkeitsbeschreibung~~ ==		== Job Description ==
			Developing multi-focus compound refractive X-ray lenses
	Ich beschäftige mich mit LIGA-gefertigten Röntgenlinsen. Speziell interessiere ich mich für Multi-Röntgenlinsen, die sowohl am Synchrotron als auch an einer Röntgenröhre zum Einsatz kommen können.
⚫	<!--
	== Fertigkeiten/Kenntnisse ==

			The field of view of X-ray microscopes based on a single compound refractive lens (CRL) is limited to a few hundred micrometers. This is due to the high ratio of lens length to lens aperture (approx. 100). One way to increase the field of view would be to arrange multiple CRLs in a lens array. However, to date, no multi-focus CRL arrays have been developed in which every lens is directed at the same point in the sample plane at the optical axis.
⚫	=== ~~Geräte~~ ===

			Multi-focus CRLs for X-rays might prove useful in two fields. One is full-field X-ray microscopy with X-ray tubes, where several pictures of a sample could be taken from slightly different angles. In this way, the relatively long exposure time (currently on the order of hours) could be reduced dramatically (in the case of a 5 x 5 lens array, to minutes). This would result in practicable exposure times for full-field X-ray microscopy in materials science laboratories. A second possible application for multi-focus CRLs would be in computer-assisted tomography (CAT) at synchrotron sources. Because high-resolution CAT images require pictures from many different angles, reducing the number of sample rotations needed would be a clear advantage. By combining a multi-focus CRL with a suitable condenser, pictures could be taken simultaneously from different angles before rotating the sample, thus considerably reducing the total exposure time. Ultimately, multi-focus CRLs could also benefit the X-ray microscope setup MiQA at the KIT synchrotron (Image beamline) by broadening its scope of application and reducing costs.
⚫	=== ~~Prozesse~~ ===

	=== ~~Materialien~~ ===		== Expertise ==

		⚫	=== Devices ===

			*Optical microscope
	== Software skills ==
			*SEM
⚫	-->
			*Hot-plates
			*Vacuum Oven
			*MiQA

			=== Processes ===

			*LIGA exposure
			*PEB
			*Development

		⚫	=== Software ===

			*MATLAB
			*Origin
			*Zemax
			*Solid Edge

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	== Trivia==		== Trivia==
	* Member of the [[Karlsruhe School of Optics & Photonics (KSOP)]]		* Member of the [[Karlsruhe School of Optics & Photonics (KSOP)]]
		⚫	-->

	<!-- Optionale Einträge wie Veröffentlichungen und Vorträge andere Wunschthemen -->		<!-- Optionale Einträge wie Veröffentlichungen und Vorträge andere Wunschthemen -->

Alexander.Opolka at 11:59, 24 August 2017

2017-08-24T11:59:28Z

← Older revision		Revision as of 13:59, 24 August 2017
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	'''E-mail''': alexander.opolka@kit.edu		'''E-mail''': alexander.opolka@kit.edu

			== Tätigkeitsbeschreibung ==
			Ich beschäftige mich mit LIGA-gefertigten Röntgenlinsen. Speziell interessiere ich mich für Multi-Röntgenlinsen, die sowohl am Synchrotron als auch an einer Röntgenröhre zum Einsatz kommen können.
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	== Job description ==

	== Fertigkeiten/Kenntnisse ==		== Fertigkeiten/Kenntnisse ==

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	=== Materialien ===		=== Materialien ===


	== Software skills ==		== Software skills ==

Alexander.Opolka at 07:10, 17 March 2017

2017-03-17T07:10:59Z

← Older revision		Revision as of 09:10, 17 March 2017
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	'''Phone''': 0721-608-22786		'''Phone''': 0721-608-22786

	'''E-mail''': alexander.opolka@~~partner.~~kit.edu		'''E-mail''': alexander.opolka@kit.edu

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Alexander.Opolka: Created page with "Alexander Opolka