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1

Schnelle Aushärtung auch im Schatten

Frank Amrhein, Martin Kehrer, Timo Schreck, Prof. Dr. Ulrich Bochtler, Prof. Dr. Ralf Hellmann, Prof. Dr. Michael Kaloudis

Journal:

adhäsion KLEBEN & DICHTEN

Year:

2011

Language:

german

File:

PDF, 474 KB

german, 2011

2

Welding of transparent polymers using femtosecond laser

Roth, Gian-Luca, Rung, Stefan, Hellmann, Ralf

Journal:

Applied Physics A: Materials Science & Processing

Year:

2016

Language:

english

File:

PDF, 567 KB

english, 2016

3

Micromachining of AlN and Al2O3 Using Fiber Laser

Preusch, Florian, Adelmann, Benedikt, Hellmann, Ralf

Journal:

Year:

2014

Language:

english

File:

PDF, 407 KB

english, 2014

4

Fs-laser based hybrid micromachining for polymer micro-opto electrical systems

Roth, Gian-Luca, Haubner, Julian, Kefer, Stefan, Esen, Cemal, Hellmann, Ralf

Journal:

Optics and Lasers in Engineering

Year:

2021

File:

PDF, 2.10 MB

2021

5

Comparative Study of Remote Fiber Laser and Water-Jet Guided Laser Cutting of Thin Metal Sheets

Klaus Hock, Benedikt Adelmann, Ralf Hellmann

Journal:

Physics Procedia

Year:

2012

Language:

english

File:

PDF, 702 KB

english, 2012

6

Volume contraction of monohydric alcohols interrogated by planar Bragg grating sensor

Girschikofsky, Maiko, Scheurich, Steffen, Belle, Stefan, Hellmann, Ralf

Journal:

Optical Engineering

Year:

2014

Language:

english

File:

PDF, 946 KB

english, 2014

7

Humidity-Induced Effects on Polymer Planar Bragg Gratings

Rosenberger, Manuel, Hessler, Steffen, Belle, Stefan, Schmauss, Bernhard, Hellmann, Ralf

Journal:

IEEE Photonics Technology Letters

Year:

2014

Language:

english

File:

PDF, 758 KB

english, 2014

8

Ultrashort pulse laser micro-welding of cyclo-olefin copolymers

Roth, Gian-Luca, Rung, Stefan, Hellmann, Ralf

Journal:

Optics and Lasers in Engineering

Year:

2017

Language:

english

File:

PDF, 559 KB

english, 2017

9

Characterization of Laser Beam Shaping Optics Based on Their Ablation Geometry of Thin Films

Rung, Stefan, Barth, Johannes, Hellmann, Ralf

Journal:

Year:

2014

Language:

english

File:

PDF, 2.97 MB

english, 2014

10

Femtosecond laser direct generation of 3D-microfluidic channels inside bulk PMMA

Roth, Gian-Luca, Esen, Cemal, Hellmann, Ralf

Journal:

Year:

2017

Language:

english

File:

PDF, 8.73 MB

english, 2017

11

High-temperature stable and sterilizable waveguide Bragg grating in planar cyclo-olefin copolymer

Rosenberger, Manuel, Kefer, Stefan, Girschikofsky, Maiko, Roth, Gian-Luca, Hessler, Steffen, Belle, Stefan, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Year:

2018

Language:

english

File:

PDF, 1.65 MB

english, 2018

12

Regional and temporal disparities of excess all-cause mortality for Germany in 2020: Is there more than just COVID-19?

KÃ¶nig, Sebastian, Hohenstein, Sven, Ueberham, Laura, Hindricks, Gerhard, Meier-Hellmann, Andreas, Kuhlen, Ralf, Bollmann, Andreas

Journal:

Journal of Infection

Year:

2020

File:

PDF, 695 KB

2020

13

Recombinant functional multidomain hemoglobin from the gastropod Biomphalaria glabrata

Vanessa Moeller, Ralf Dürr, Ladan Sarraf-Zadeh, Sabrina Keller, Stefanie Heinz, Nadja Hellmann, Arne Moeller, Bernhard Lieb, Jürgen Markl

Journal:

Year:

2011

Language:

english

File:

PDF, 840 KB

english, 2011

14

Picosecond Laser Patterning of ITO Thin Films

Anna Risch, Ralf Hellmann

Journal:

Physics Procedia

Year:

2011

Language:

english

File:

PDF, 779 KB

english, 2011

15

Laser scribing of gallium doped zinc oxide thin films using picosecond laser

Anna Risch, Ralf Hellmann

Journal:

Applied Surface Science

Year:

2011

Language:

english

File:

PDF, 508 KB

english, 2011

16

Efficient Micromachining of Thin Films with Nanosecond Lasers

Bischoff, Christian, Hellmann, Ralf, Rung, Stefan

Journal:

Laser Technik Journal

Year:

2012

Language:

english

File:

PDF, 586 KB

english, 2012

17

The Unruh–DeWitt detector and the vacuum in the general boundary formalism

Banisch, Ralf, Hellmann, Frank, Rätzel, Dennis

Journal:

Classical and Quantum Gravity

Year:

2013

Language:

english

File:

PDF, 534 KB

english, 2013

18

Highly Sensitive Detection of Naphthalene in Solvent Vapor Using a Functionalized PBG Refractive Index Sensor

Girschikofsky, Maiko, Rosenberger, Manuel, Belle, Stefan, Brutschy, Malte, Waldvogel, Siegfried R., Hellmann, Ralf

Journal:

Year:

2012

Language:

english

File:

PDF, 178 KB

english, 2012

19

Simultaneous 2D Strain Sensing Using Polymer Planar Bragg Gratings

Rosenberger, Manuel, Eisenbeil, Waltraud, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Year:

2015

Language:

english

File:

PDF, 429 KB

english, 2015

20

SPIE Proceedings [SPIE SPIE LASE - San Francisco, California, United States (Saturday 1 February 2014)] Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XIX - Laser thin film ablation with multiple beams and tailored beam profiles

Nakata, Yoshiki, Xu, Xianfan, Roth, Stephan, Neuenschwander, Beat, Rung, Stefan, Bischoff, Christian, Jäger, Erwin, Umhofer, Udo, Hellmann, Ralf

Year:

2014

Language:

english

File:

PDF, 1.40 MB

english, 2014

21

Flexible polymer shape sensor based on planar waveguide Bragg gratings

Rosenberger, Manuel, Pauer, Hendrikje, Girschikofsky, Maiko, Worn, Heinz, Schmauss, Bernhard, Hellmann, Ralf

Journal:

IEEE Photonics Technology Letters

Year:

2016

Language:

english

File:

PDF, 765 KB

english, 2016

22

Surface functionalization allowing repetitive use of optical sensors for real-time detection of antibody-bacteria interaction

Kutscher, Marika, Rosenberger, Manuel, Schmauss, Bernhard, Meinel, Lorenz, Lorenz, Udo, Ohlsen, Knut, Hellmann, Ralf, Germershaus, Oliver

Journal:

Journal of Biophotonics

Year:

2016

Language:

english

File:

PDF, 301 KB

english, 2016

23

Polymer Planar Bragg Gratings

Rosenberger, Manuel, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Optik & Photonik

Year:

2015

Language:

english

File:

PDF, 1.12 MB

english, 2015

24

Natural Killer (NK) Cell Functionality after human Spinal Cord Injury (SCI): protocol of a prospective, longitudinal study

Laginha, Inês, Kopp, Marcel A., Druschel, Claudia, Schaser, Klaus-Dieter, Brommer, Benedikt, Hellmann, Rick C., Watzlawick, Ralf, Ossami-Saidi, Ramin-Raul, Prüss, Harald, Failli, Vieri, Meisel, Christ

Journal:

Year:

2016

Language:

english

File:

PDF, 545 KB

english, 2016

25

Generation of laser-induced periodic surface structures on transparent material-fused silica

Schwarz, Simon, Rung, Stefan, Hellmann, Ralf

Journal:

Applied Physics Letters

Year:

2016

Language:

english

File:

PDF, 648 KB

english, 2016

26

SPIE Proceedings [SPIE SPIE OPTO - San Francisco, California, United States (Saturday 28 January 2017)] Integrated Optics: Devices, Materials, and Technologies XXI - Fabrication of Bragg grating sensors in UV-NIL structured Ormocer waveguides

García-Blanco, Sonia M., Nunzi Conti, Gualtiero, Girschikofsky, Maiko, Förthner, Michael, Rommel, Mathias, Frey, Lothar, Hellmann, Ralf

Year:

2017

Language:

english

File:

PDF, 738 KB

english, 2017

27

One-dimensional low spatial frequency LIPSS with rotating orientation on fused silica

Schwarz, Simon, Rung, Stefan, Hellmann, Ralf

Journal:

Applied Surface Science

Year:

2017

Language:

english

File:

PDF, 3.11 MB

english, 2017

28

Burr formation detector for fiber laser cutting based on a photodiode sensor system

Schleier, Max, Adelmann, Benedikt, Neumeier, Benedikt, Hellmann, Ralf

Journal:

Optics & Laser Technology

Year:

2017

Language:

english

File:

PDF, 1.23 MB

english, 2017

29

Two-dimensional interferometric characterization of laser-induced refractive index profiles in bulk Topas polymer

Hessler, Steffen, Rosenberger, Manuel, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Optical Materials

Year:

2018

Language:

english

File:

PDF, 1.64 MB

english, 2018

30

Cross-correlation based algorithm for monitoring laser cutting with high power fiber lasers

Schleier, Max, Adelmann, Benedikt, Esen, Cemal, Hellmann, Ralf

Journal:

IEEE Sensors Journal

Year:

2017

Language:

english

File:

PDF, 1.18 MB

english, 2017

31

Two-photon polymerization based large scaffolds for adhesion and proliferation studies of human primary fibroblasts

Trautmann, Anika, Rüth, Marieke, Lemke, Horst-Dieter, Walther, Thomas, Hellmann, Ralf

Journal:

Optics & Laser Technology

Year:

2018

Language:

english

File:

PDF, 2.86 MB

english, 2018

32

68Ga-TRAP-(RGD)3 Hybrid Imaging for the In Vivo Monitoring of αvß3-Integrin Expression as Biomarker of Anti-Angiogenic Therapy Effects in Experimental Breast Cancer

Kazmierczak, Philipp M., Todica, Andrei, Gildehaus, Franz-Josef, Hirner-Eppeneder, Heidrun, Brendel, Matthias, Eschbach, Ralf S., Hellmann, Magdalena, Nikolaou, Konstantin, Reiser, Maximilian F., West

Journal:

Year:

2016

Language:

english

File:

PDF, 1.92 MB

english, 2016

33

Time Dependence of Wetting Behavior Upon Applying Hierarchic Nano-Micro Periodic Surface Structures on Brass Using Ultra Short Laser Pulses

Rung, Stefan, Schwarz, Simon, Götzendorfer, Babette, Esen, Cemal, Hellmann, Ralf

Journal:

Applied Sciences

Year:

2018

Language:

english

File:

PDF, 8.09 MB

english, 2018

34

UV-Writing of a Superstructure Waveguide Bragg Grating in a Planar Polymer Substrate

Rosenberger, Manuel, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Year:

2017

Language:

english

File:

PDF, 2.01 MB

english, 2017

35

Waveguide Bragg Gratings in Ormocer®s for Temperature Sensing

Girschikofsky, Maiko, Rosenberger, Manuel, Förthner, Michael, Rommel, Mathias, Frey, Lothar, Hellmann, Ralf

Journal:

Year:

2017

Language:

english

File:

PDF, 1.62 MB

english, 2017

36

Waveguide Bragg gratings in Ormocer hybrid polymers

Girschikofsky, Maiko, Förthner, Michael, Rommel, Mathias, Frey, Lothar, Hellmann, Ralf

Journal:

Year:

2016

Language:

english

File:

PDF, 7.22 MB

english, 2016

37

Erratum: “Generation of laser-induced periodic surface structures on transparent material-fused silica” [Appl. Phys. Lett. 108 , 181607 (2016)]

Schwarz, Simon, Rung, Stefan, Hellmann, Ralf

Journal:

Applied Physics Letters

Year:

2018

Language:

english

File:

PDF, 382 KB

english, 2018

38

Methyl-Substituted α-Cyclodextrin as Affinity Material for Storage, Separation, and Detection of Trichlorofluoromethane

Ryvlin, Dimitrij, Girschikofsky, Maiko, Schollmeyer, Dieter, Hellmann, Ralf, Waldvogel, Siegfried R.

Journal:

Global Challenges

Year:

2018

Language:

english

File:

PDF, 818 KB

english, 2018

39

Fabrication of a high-quality axicon by femtosecond laser ablation and CO 2 laser polishing for quasi-Bessel beam generation

Schwarz, Simon, Rung, Stefan, Esen, Cemal, Hellmann, Ralf

Journal:

Year:

2018

Language:

english

File:

PDF, 6.37 MB

english, 2018

40

Pollutant Adsorbtion and Detection: Methyl-Substituted α-Cyclodextrin as Affinity Material for Storage, Separation, and Detection of Trichlorofluoromethane (Global Challenges 8/2018)

Ryvlin, Dimitrij, Girschikofsky, Maiko, Schollmeyer, Dieter, Hellmann, Ralf, Waldvogel, Siegfried R.

Journal:

Global Challenges

Year:

2018

File:

PDF, 2.03 MB

2018

41

Surface Plasmon Polariton Triggered Generation of 1D-Low Spatial Frequency LIPSS on Fused Silica

Schwarz, Simon, Rung, Stefan, Esen, Cemal, Hellmann, Ralf

Journal:

Applied Sciences

Year:

2018

Language:

english

File:

PDF, 7.40 MB

english, 2018

42

Optical Cutting Interruption Sensor for Fiber Lasers

Adelmann, Benedikt, Schleier, Max, Neumeier, Benedikt, Wilmann, Eugen, Hellmann, Ralf

Journal:

Applied Sciences

Year:

2015

Language:

english

File:

PDF, 1.23 MB

english, 2015

43

Optical Sensor for Real-Time Detection of Trichlorofluoromethane

Girschikofsky, Maiko, Ryvlin, Dimitrij, Waldvogel, Siegfried, Hellmann, Ralf

Journal:

Year:

2019

File:

PDF, 4.27 MB

2019

44

Optical Sensor for Real-Time Detection of Trichlorofluoromethane

Girschikofsky, Maiko, Ryvlin, Dimitrij, Waldvogel, Siegfried, Hellmann, Ralf

Journal:

Year:

2019

Language:

english

File:

PDF, 4.27 MB

english, 2019

45

Circular microchannels inside bulk polymethylmethacrylate generated by femtosecond laser using slit beam shaping

Roth, Gian-Luca, Esen, Cemal, Hellmann, Ralf

Journal:

Journal of Laser Applications

Year:

2019

Language:

english

File:

PDF, 1.28 MB

english, 2019

46

Multipurpose Polymer Bragg Grating-Based Optomechanical Sensor Pad

Hessler, Steffen, Bott, Patrick, Kefer, Stefan, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Year:

2019

Language:

english

File:

PDF, 3.90 MB

english, 2019

47

Multipurpose Polymer Bragg Grating-Based Optomechanical Sensor Pad

Hessler, Steffen, Bott, Patrick, Kefer, Stefan, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Year:

2019

File:

PDF, 3.90 MB

2019

48

Rapid fabrication of precise glass axicon arrays by an all laser-based manufacturing technology

Schwarz, Simon, Rung, Stefan, Esen, Cemal, Hellmann, Ralf

Journal:

Journal of Laser Applications

Year:

2020

File:

PDF, 2.25 MB

2020

49

Robust Polymer Planar Bragg Grating Sensors Embedded in Commercial-Grade Composites

Kefer, Stefan, Sauer, Theresia, Hessler, Steffen, Kaloudis, Michael, Schmauss, Bernhard, Hellmann, Ralf

Journal:

Year:

2020

Language:

english

File:

PDF, 3.72 MB

english, 2020

50

[IEEE 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - Xiamen, China (2019.12.17-2019.12.20)] 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - Fabrication and Applications of Polymer Planar Bragg Grating Sensors Based on Cyclic Olefin Copolymers

Kefer, Stefan, Rosenberger, Manuel, Hessler, Steffen, Girschikofsky, Maiko, Belle, Stefan, Roth, Gian-Luca, Schmauss, Bernhard, Hellmann, Ralf

Year:

2019

File:

PDF, 1.16 MB

2019

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