Number of the records: 1
Cryogenic Sample Holder with Electrical Contacts for UHV SEM/SPM
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SYSNO ASEP 0568602 Document Type A - Abstract R&D Document Type The record was not marked in the RIV Title Cryogenic Sample Holder with Electrical Contacts for UHV SEM/SPM Author(s) Krutil, Vojtěch (UPT-D) ORCID, RID, SAI
Dupák, Libor (UPT-D) RID, ORCID, SAI
Fořt, Tomáš (UPT-D) RID, ORCID, SAI
Matějka, Milan (UPT-D) RID, ORCID, SAI
Srnka, Aleš (UPT-D) RID, ORCID, SAI
Vlček, Ivan (UPT-D) RID, ORCID, SAI
Urban, Pavel (UPT-D) RID, ORCID, SAISource Title 16th Multinational Congress on Microscopy, 16MCM, 04-09 September 2022, Brno, Czech Republic. Book of abstracts. - Brno : Czechoslovak Microscopy Society, 2022 / Krzyžánek V. ; Hrubanová K. ; Hozák P. ; Müllerová I. ; Šlouf M. - ISBN 978-80-11-02253-2
S. 142-143Number of pages 2 s. Publication form Online - E Action Multinational Congress on Microscopy /16./ Event date 04.09.2022 - 09.09.2022 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic R&D Projects TE01020233 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UPT-D - RVO:68081731 Annotation We present a cryogenic sample holder with ten spring-loaded electrical contacts specially designed for an ultra-high vacuum scanning electron microscope combined with a scanning probe
microscope (UHV SEM/SPM) working in the temperature range of 20 K - 300 K. The contacts serve for the electrical connection of a removable transport pallet carrying a sample to the holder. Besides the sample, the transport pallet can be equipped with a low-temperature sensor, a heating element, and ten solid pins. Two quadruples of contacts allow precise four-wire measurement of electrical properties and temperature of the sample and the remaining pair allows two-wire connection of the heating element. The contact function was successfully verified by measuring the transient electrical resistance at the fixed and the spring contact sections within the whole range of the working temperatures. During the test, the transport pallet was repeatedly loaded into the holder. The limit temperature 22 K of the pallet was reached with a cryogenic helium flow cooling system embedded in a test vacuum chamber at the ambient temperature (~ 300 K). To minimize the effect of water ice condensation on the cold contact surfaces at low temperatures, a cooled thermal shield surrounding the sample holder was used as a water vapour trap. In this configuration, the limit temperature of the pallet was decreased down to 20.5 K. A thorough research study of commercially available sample holders indicates that the holders for the intended use are not available on the market.Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2023
Number of the records: 1