Welcome to the Open Access Repository of the Physikalisch-Technische Bundesanstalt (PTB-OAR)

PTB is the national metrology institute of the Federal Republic of Germany.

This database grants free access to a number of documents and factual datasets that were elaborated at PTB. This includes publications such as the "PTB-Mitteilungen", the metrological expert journal of PTB, and numerous of documents from the field of legal metrology.

Please use the search function or the category selection on the right-hand side to find the publications you are looking for.

When downloading the publications, please take the license conditions for further use into account.

All Resources

Validation of measurement uncertainty budgets : Guide DKD-L 13-2 (2020); Physikalisch-Technische Bundesanstalt, Braunschweig; DOI: 10.7795/550.20211118
Assessing Time Transfer Methods for Accuracy and Reliability: Navigating the Time Transfer Trade-off Triangle (2021); Teichel, Kristof; Lehtonen, Tapio; Wallin, Anders; DOI: 10.7795/820.20211123K
Einzelelektronenschaltungen mit ballistischen heißen Elektronen (2021); Freise, Lars; DOI: 10.7795/110.20211111
Rundung von Ergebnissen und Messunsicherheiten in Kalibrierscheinen : Leitfaden DKD-L 13-3 (2021); Mitglieder des Fachausschusses Messunsicherheit des DKD; DOI: 10.7795/550.20211108
Anomalies in multiline-TRL-corrected measurements of short CPW lines (2021); Phung, Gia Ngoc; Arz, Uwe; DOI: 10.7795/EMPIR.14IND02.CA.20211104A
Impact of Chuck Boundary Conditions on Wideband On-Wafer Measurements (2021); Phung, Gia Ngoc; Arz, Uwe; DOI: 10.7795/EMPIR.14IND02.CA.20211104B
Wunsch und Wirklichkeit: Zwei-Punkte-Schätzwert, Rohmessdaten und gesamte Messreihe (2021); Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 1.3 "Geschwindigkeit"; DOI: 10.7795/520.20211104
Additional data for the publication "Improved Limits for Violations of Local Position Invariance from Atomic Clock Comparisons" (2021); Lange, Richard; Huntemann, Nils; Rahm, Johannes M.; Sanner, Christian; Shao, Hu; et al. DOI: 10.7795/720.20211028
Alpha-Synuclein in Parkinson’s Disease, Spreading of injected alpha-synuclein fibrils to and within cerebella of a transgenic PD mouse model (2021); Su, Elena; DOI: 10.7795/320.202107
The TILSAM method adapted into Optical Gas Standards - complementing gaseous reference materials (2021); Werhahn, Olav; Petersen, Jan C.; Nwaboh, Javis; Pogány, Andrea; Qu, Zhechao; DOI: 10.7795/EMPIR.16ENG05.CA.20211013
The thorium-229 low-energy isomer and the nuclear clock (2021); Beeks, Kjeld; Sikorsky, Tomas; Schumm, Thorsten; Thielking, Johannes; Okhapkin, Maxim V.; et al. DOI: 10.7795/120.20211006
Additional data for the publication "The blackbody radiation shift in strontium lattice clocks revisited" (2021); Lisdat, Christian; Dörscher, Sören; Nosske, Ingo; Sterr, Uwe; DOI: 10.7795/720.20210928
Measurement and simulation data for "Identification of aliasing effects in measurements of unknown MTFs" (2021); Schake, Markus; Schulz, Michael; DOI: 10.7795/710.20210915
To get to the point, Neural Network application to key-point detection in radiographs (2021); Schott, Constantin Tilman; DOI: 10.7795/320.202106
Höhle mit Geheimnissen, Karstgewässeruntersuchung in der Križna Jama mittels selbst entwickelter Methoden (2021); Kausch, Leon; Grumann, Moritz; Nitsche, Leon; DOI: 10.7795/320.202105