Ralf Hellmann

437 total citations
37 papers, 368 citations indexed

About

Ralf Hellmann is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Bioengineering. According to data from OpenAlex, Ralf Hellmann has authored 37 papers receiving a total of 368 indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Electrical and Electronic Engineering, 14 papers in Atomic and Molecular Physics, and Optics and 6 papers in Bioengineering. Recurrent topics in Ralf Hellmann's work include Photonic and Optical Devices (33 papers), Advanced Fiber Optic Sensors (33 papers) and Semiconductor Lasers and Optical Devices (11 papers). Ralf Hellmann is often cited by papers focused on Photonic and Optical Devices (33 papers), Advanced Fiber Optic Sensors (33 papers) and Semiconductor Lasers and Optical Devices (11 papers). Ralf Hellmann collaborates with scholars based in Germany, Switzerland and China. Ralf Hellmann's co-authors include M. Rosenberger, Bernhard Schmauß, Siegfried R. Waldvogel, Malte Brutschy, Georg Koller, L. Frey, Mathias Rommel, Heinz Woern, Benedikt Adelmann and Knut Ohlsen and has published in prestigious journals such as SHILAP Revista de lepidopterología, Optics Letters and Optics Express.

In The Last Decade

Ralf Hellmann

36 papers receiving 357 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ralf Hellmann Germany 12 321 112 89 58 28 37 368
M. Rosenberger Germany 13 316 1.0× 112 1.0× 86 1.0× 55 0.9× 25 0.9× 28 361
Zhengtian Gu China 13 554 1.7× 217 1.9× 86 1.0× 96 1.7× 36 1.3× 88 619
Tatsiana Mikulchyk Ireland 9 160 0.5× 168 1.5× 59 0.7× 37 0.6× 56 2.0× 22 283
Young-Ouk Noh South Korea 15 515 1.6× 163 1.5× 63 0.7× 29 0.5× 34 1.2× 24 549
Nancy Meng Ying Zhang Singapore 11 431 1.3× 133 1.2× 189 2.1× 20 0.3× 60 2.1× 14 534
Caibin Yu China 8 420 1.3× 152 1.4× 160 1.8× 104 1.8× 56 2.0× 11 464
Dariusz Burnat Poland 11 243 0.8× 55 0.5× 113 1.3× 122 2.1× 26 0.9× 24 312
Christopher Lavers United Kingdom 9 219 0.7× 85 0.8× 130 1.5× 52 0.9× 22 0.8× 18 305
Stanley V. Stepnowski United States 7 138 0.4× 161 1.4× 158 1.8× 109 1.9× 44 1.6× 14 366
Yit‐Yian Lua United States 12 225 0.7× 111 1.0× 126 1.4× 12 0.2× 152 5.4× 16 361

Countries citing papers authored by Ralf Hellmann

Since Specialization
Citations

This map shows the geographic impact of Ralf Hellmann's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ralf Hellmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ralf Hellmann more than expected).

Fields of papers citing papers by Ralf Hellmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ralf Hellmann. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ralf Hellmann. The network helps show where Ralf Hellmann may publish in the future.

Co-authorship network of co-authors of Ralf Hellmann

This figure shows the co-authorship network connecting the top 25 collaborators of Ralf Hellmann. A scholar is included among the top collaborators of Ralf Hellmann based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ralf Hellmann. Ralf Hellmann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Hübner, Wolfgang, Karolina Szafranska, Peter McCourt, et al.. (2024). Correlative Super‐Resolution Imaging of Cellular Nanopores Facilitated by Transparent Polymer Waveguide Chips. Advanced Optical Materials. 13(8).
2.
Schmauß, Bernhard, et al.. (2023). Towards pressure sensors based on polymer planar Bragg gratings. 2161. 29–29. 1 indexed citations
3.
Zhou, Yong, Wenbin Hu, Adam Yongxin Ye, et al.. (2022). Hydrogen sensor based on planar polymer Bragg grating coated with Pd/Ni composite film. 42–42. 1 indexed citations
4.
Lemke, Horst‐Dieter, et al.. (2021). Deep UV Formation of Long-Term Stable Optical Bragg Gratings in Epoxy Waveguides and Their Biomedical Sensing Potentials. Sensors. 21(11). 3868–3868. 1 indexed citations
5.
Rommel, Mathias, et al.. (2020). Advancing the sensitivity of integrated epoxy-based Bragg grating refractometry by high-index nanolayers. Optics Letters. 45(19). 5510–5510. 4 indexed citations
6.
Schollmeyer, Dieter, et al.. (2018). Methyl‐Substituted α‐Cyclodextrin as Affinity Material for Storage, Separation, and Detection of Trichlorofluoromethane. SHILAP Revista de lepidopterología. 2(8). 1800057–1800057. 5 indexed citations
7.
Rommel, Mathias, et al.. (2018). One-step nanoimprinted Bragg grating sensor based on hybrid polymers. Sensors and Actuators A Physical. 283. 298–304. 3 indexed citations
8.
Rosenberger, M., Bernhard Schmauß, & Ralf Hellmann. (2017). UV-Writing of a Superstructure Waveguide Bragg Grating in a Planar Polymer Substrate. Sensors. 17(9). 1964–1964. 3 indexed citations
9.
Rosenberger, M., et al.. (2017). Temperature Referenced Planar Bragg Grating Strain Sensor in fs-Laser Cut COC Specimen. IEEE Photonics Technology Letters. 29(11). 885–888. 10 indexed citations
10.
Rosenberger, M., et al.. (2016). Flexible Polymer Shape Sensor Based on Planar Waveguide Bragg Gratings. IEEE Photonics Technology Letters. 28(17). 1898–1901. 16 indexed citations
11.
Rosenberger, M., et al.. (2016). Fabrication of Bragg gratings in planar PMMA: impact of UV dosage and thermal annealing. Optics Express. 24(20). 22563–22563. 2 indexed citations
12.
Rosenberger, M., et al.. (2015). Simultaneous 2D Strain Sensing Using Polymer Planar Bragg Gratings. Sensors. 15(2). 4264–4272. 26 indexed citations
13.
Rosenberger, M., et al.. (2015). Influence of chemical polymer composition on integrated waveguide formation induced by excimer laser surface irradiation. Applied Surface Science. 356. 532–538. 7 indexed citations
14.
Rosenberger, M., et al.. (2015). TOPAS based humidity insensitive polymer planar Bragg gratings for temperature and multi-axial strain sensing. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 9444. 944408–944408. 5 indexed citations
15.
Rosenberger, M., et al.. (2014). Compressive and tensile strain sensing using a polymer planar Bragg grating. Optics Express. 22(5). 5483–5483. 35 indexed citations
16.
Rosenberger, M., et al.. (2014). Humidity-Induced Effects on Polymer Planar Bragg Gratings. IEEE Photonics Technology Letters. 26(16). 1669–1671. 4 indexed citations
17.
Rosenberger, M., et al.. (2013). Polymer planar Bragg grating sensor for static strain measurements. Optics Letters. 38(5). 772–772. 12 indexed citations
18.
19.
Rosenberger, M., et al.. (2012). Planar Bragg grating in bulk Polymethylmethacrylate. Optics Express. 20(25). 27288–27288. 39 indexed citations
20.
Rosenberger, M., et al.. (2012). Functionalized planar Bragg grating sensor for the detection of BTX in solvent vapor. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8439. 843916–843916. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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