Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Tobias Ullsperger"'
Autor:
Tobias Ullsperger, Yannick L. Wencke, Burak Yürekli, Gabor Matthäus, Markus Rettenmayr, Gerrit A. Luinstra, Stefan Nolte
Publikováno v:
Materials & Design, Vol 210, Iss , Pp 110048- (2021)
Laser based additive manufacturing of UHMWPE offers new opportunities for realizing complex components for medical implants. Conventionally, laser powder bed fusion of UHMWPE is achieved by CO2 lasers but up to now the mechanical properties of the pr
Externí odkaz:
https://doaj.org/article/443b839310594d5087a55d72f8b66c09
Autor:
Dongmei Liu, Burak Yürekli, Tobias Ullsperger, Gabor Matthäus, Lisa Schade, Stefan Nolte, Markus Rettenmayr
Publikováno v:
Materials & Design, Vol 198, Iss , Pp 109323- (2021)
Laser assisted powder bed fusion using a binary AlLi alloy with high Li content (Al–14 at.%Li) has been performed for the first time. The aim was to generate microstructures with extended concentration range of AlLi alloys in which the format
Externí odkaz:
https://doaj.org/article/f2b26da6ad3949ec962f89f85693a8bb
Autor:
Frank Seiboth, Andreas Schropp, Maria Scholz, Felix Wittwer, Christian Rödel, Martin Wünsche, Tobias Ullsperger, Stefan Nolte, Jussi Rahomäki, Karolis Parfeniukas, Stylianos Giakoumidis, Ulrich Vogt, Ulrich Wagner, Christoph Rau, Ulrike Boesenberg, Jan Garrevoet, Gerald Falkenberg, Eric C. Galtier, Hae Ja Lee, Bob Nagler, Christian G. Schroer
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-5 (2017)
X-ray optics are notoriously challenging to fabricate due to the strict tolerances that result from the short wavelength of radiation. Here, Seibothet al. carefully quantify aberrations in complex X-ray lenses and correct them with an easy-to-fabrica
Externí odkaz:
https://doaj.org/article/8a89f31f22b74040a6c82fcd943e41bd
Autor:
Athira Kuppadakkath, Emad Najafidehaghani, Ziyang Gan, Alessandro Tuniz, Gia Quyet Ngo, Heiko Knopf, Franz J. F. Löchner, Fatemeh Abtahi, Tobias Bucher, Sai Shradha, Thomas Käsebier, Stefano Palomba, Nadja Felde, Pallabi Paul, Tobias Ullsperger, Sven Schröder, Adriana Szeghalmi, Thomas Pertsch, Isabelle Staude, Uwe Zeitner, Antony George, Andrey Turchanin, Falk Eilenberger
Publikováno v:
Nanophotonics. 11:4397-4408
We report for the first time the direct growth of molybdenum disulfide (MoS2) monolayers on nanostructured silicon-on-insulator waveguides. Our results indicate the possibility of utilizing the Chemical Vapour Deposition (CVD) on nanostructured photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ba9ed15858f3ac7724e4312eed81df3
https://doi.org/10.1515/nanoph-2022-0235
https://doi.org/10.1515/nanoph-2022-0235
Autor:
Ria G. Krämer, Christian P. Schmittner, Malte P. Siems, Tobias Ullsperger, Thorsten A. Goebel, Daniel Richter, Stefan Nolte
Publikováno v:
Components and Packaging for Laser Systems IX.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dae6a73b2b3707326c531bdbd35a090
https://doi.org/10.1117/12.2649952
https://doi.org/10.1117/12.2649952
Autor:
Hagen Kohl, Lisa Schade, Gabor Matthäus, Tobias Ullsperger, Burak Yürekli, Brian Seyfarth, Stefan Nolte
Publikováno v:
Laser 3D Manufacturing IX.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ad81d3ae7fb024f4efa02535162313e
https://doi.org/10.1117/12.2609983
https://doi.org/10.1117/12.2609983
Autor:
Gabor Matthäus, Markus Rettenmayr, Dongmei Liu, Tobias Ullsperger, Hagen Kohl, Burak Yürekli, Stefan Nolte, Lisa Schade, Brian Seyfarth
Publikováno v:
Procedia CIRP. 94:69-73
Laser assisted additive manufacturing using binary Al-Li with increased Li content is presented. Al-Li alloys show high potential for future lightweight constructions due to increased stiffness at decreased mass. In particular, the elastic modulus si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ee50507e177450dc8b0f23da35ab2d3
https://doi.org/10.1016/j.procir.2020.09.014
https://doi.org/10.1016/j.procir.2020.09.014
Autor:
Ria G. Krämer, Christian P. Schmittner, Thorsten A. Goebel, Malte P. Siems, Tobias Ullsperger, Timothy O. Imogore, Daniel Richter, Stefan Nolte
Publikováno v:
Optica Advanced Photonics Congress 2022.
We present the realization of tailored apodization profiles of femtosecond written FBGs using phase mask scanning technique with aperture shaping. By controlling the cross-sectional dimension of the refractive index modification, the spectral respons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dcd7a281c9aab1924f6676bea514d5c
https://doi.org/10.1364/bgppm.2022.btu1a.5
https://doi.org/10.1364/bgppm.2022.btu1a.5
Autor:
Lisa Schade, Stefan Nolte, Brian Seyfarth, Tobias Ullsperger, Hagen Kohl, Gabor Matthäus, Burak Yürekli
Publikováno v:
Laser 3D Manufacturing VIII.
Additive manufacturing (AM) of pure copper using laser assisted powder bed fusion (LPBF) at a wavelength of 1070 nm is demonstrated. The rapid drop of absorption at the melting point of pure copper hinders the identification of an appropriate process
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::489491519a170b0bfc0362debbabd091
https://doi.org/10.1117/12.2578320
https://doi.org/10.1117/12.2578320
Autor:
Ria G. Krämer, Daniel Richter, Stefan Nolte, Maximilian Heck, Thorsten A. Goebel, Tobias Ullsperger, Andreas Tünnermann
Publikováno v:
Components and Packaging for Laser Systems VI.
We report on the inscription of compact and highly efficient transmission fiber gratings by means of an amplitude mask and femtosecond laser pulses at 800 nm. With the approach, gratings with strong resonances could be realized where the total length
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ba7c83657cd0ab7c2741d210e84ab6e
https://doi.org/10.1117/12.2544236
https://doi.org/10.1117/12.2544236