C. Hamann

1.0k total citations
71 papers, 783 citations indexed

About

C. Hamann is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Biomedical Engineering. According to data from OpenAlex, C. Hamann has authored 71 papers receiving a total of 783 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Electrical and Electronic Engineering, 31 papers in Materials Chemistry and 15 papers in Biomedical Engineering. Recurrent topics in C. Hamann's work include Porphyrin and Phthalocyanine Chemistry (16 papers), Molecular Junctions and Nanostructures (15 papers) and Transition Metal Oxide Nanomaterials (7 papers). C. Hamann is often cited by papers focused on Porphyrin and Phthalocyanine Chemistry (16 papers), Molecular Junctions and Nanostructures (15 papers) and Transition Metal Oxide Nanomaterials (7 papers). C. Hamann collaborates with scholars based in Germany, Czechia and Ukraine. C. Hamann's co-authors include Thomas Frauenheim, H. Wagner, Andreas Heilmann, G. Lehmann, F. Kersten, J. Michael Köhler, P. Günther, G. Alexander Groß, V. Lantto and W. Göpel and has published in prestigious journals such as Sensors and Actuators B Chemical, IEEE Transactions on Microwave Theory and Techniques and Thin Solid Films.

In The Last Decade

C. Hamann

68 papers receiving 711 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
C. Hamann Germany 17 403 377 166 166 117 71 783
R. B. Comizzoli United States 12 425 1.1× 222 0.6× 61 0.4× 121 0.7× 245 2.1× 46 768
A. K. Abass Iraq 19 800 2.0× 366 1.0× 162 1.0× 137 0.8× 74 0.6× 91 1.1k
Si Hui Pan China 18 465 1.2× 187 0.5× 112 0.7× 352 2.1× 98 0.8× 40 891
Takao Abe Japan 13 214 0.5× 369 1.0× 99 0.6× 95 0.6× 46 0.4× 42 794
Jaime Viegas United Arab Emirates 22 956 2.4× 445 1.2× 127 0.8× 274 1.7× 121 1.0× 79 1.4k
Lijuan Liu China 17 644 1.6× 188 0.5× 175 1.1× 91 0.5× 102 0.9× 68 745
Andreas Härtl Germany 10 449 1.1× 544 1.4× 41 0.2× 153 0.9× 15 0.1× 13 946
Sait Eren San Türkiye 21 616 1.5× 510 1.4× 289 1.7× 265 1.6× 489 4.2× 87 1.3k
Donghoon Han South Korea 20 565 1.4× 246 0.7× 121 0.7× 371 2.2× 156 1.3× 80 1.2k
Dandan Liu China 14 1.2k 2.9× 854 2.3× 238 1.4× 108 0.7× 74 0.6× 50 1.4k

Countries citing papers authored by C. Hamann

Since Specialization
Citations

This map shows the geographic impact of C. Hamann'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 C. Hamann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. Hamann more than expected).

Fields of papers citing papers by C. Hamann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. Hamann. 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 C. Hamann. The network helps show where C. Hamann may publish in the future.

Co-authorship network of co-authors of C. Hamann

This figure shows the co-authorship network connecting the top 25 collaborators of C. Hamann. A scholar is included among the top collaborators of C. Hamann 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 C. Hamann. C. Hamann 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.
Völp, Marcus, et al.. (2013). On confidentiality-preserving real-time locking protocols. 153–162. 11 indexed citations
2.
Nešpůrek, S., H. Podlesak, & C. Hamann. (1994). Structure and photoelectrical behaviour of vacuum-evaporated metal-free phthalocyanine films. Thin Solid Films. 249(2). 230–235. 9 indexed citations
3.
Hamann, C., et al.. (1991). Lead phthalocyanine thin films for NO2 sensors. Sensors and Actuators B Chemical. 4(1-2). 73–78. 33 indexed citations
4.
Hamann, C., et al.. (1990). Gas and humidity sensors based on organic active thin films. Sensors and Actuators B Chemical. 1(1-6). 142–147. 25 indexed citations
5.
Hamann, C., et al.. (1986). Doped polymer films prepared by glow discharge polymerization. physica status solidi (a). 97(2). 619–626. 5 indexed citations
6.
Hamann, C., et al.. (1984). Glow discharge polymeric films: preparation, structure, properties and applications. Vacuum. 34(12). 1053–1059. 19 indexed citations
7.
Frauenheim, Thomas, et al.. (1984). Electric field-induced disorder–order transition in organic polycrystalline films of quasi-one-dimensional lead-phthalocyanine. physica status solidi (a). 86(2). 735–747. 24 indexed citations
8.
Hamann, C.. (1980). A First Principles Model of Energetical Trap Distributions in Solids. I. The Linear Finite Defect Chain. physica status solidi (b). 98(1). 229–234. 1 indexed citations
9.
Hamann, C., et al.. (1978). Switching effects on polycrystalline films of lead phthalocyanine (PbPc). physica status solidi (a). 50(2). K189–K192. 24 indexed citations
10.
Hamann, C.. (1977). Elektronische Eigenschaften von Molekülkristallen. Kristall und Technik. 12(7). 651–665. 1 indexed citations
11.
Kersten, F. & C. Hamann. (1976). Zur Gleichgewichts‐ und Wachstumsform von β‐Kupferphthalocyanin‐Einkristallen. Kristall und Technik. 11(11). 1101–1111. 3 indexed citations
12.
Hamann, C., et al.. (1976). Oberflächenstörungen und Hohlwachstum bei der Züchtung von β‐Kupferphthalocyanin‐Einkristallen aus der Gasphase. Kristall und Technik. 11(12). 1227–1235. 3 indexed citations
13.
Kersten, F. & C. Hamann. (1976). Zum Einfluß der Diffusion auf Keimbildung und Wachstum bei der Kristallzüchtung aus der Gasphase. Kristall und Technik. 11(10). 1005–1011. 3 indexed citations
14.
Kersten, F. & C. Hamann. (1976). Zur Züchtung von β‐Kupferphthalocyanin‐Einkristallen aus der Gasphase. Kristall und Technik. 11(9). 927–936. 3 indexed citations
15.
Lehmann, G. & C. Hamann. (1973). A Model of the Electrical Transport Phenomena in Imperfect Crystals of Copper Phthalocyanine. I. Basic Ideas and Treatment of Bulk Defects. physica status solidi (b). 55(2). 585–594. 6 indexed citations
16.
Hamann, C., et al.. (1973). The influence of an impurity on the energetic trap distribution of copper phthalocyanine. physica status solidi (a). 16(2). 463–468. 9 indexed citations
17.
Hamann, C. & M. Schenk. (1971). The expansion coefficient of copper phthalocyanine. Kristall und Technik. 6(6). 2 indexed citations
18.
Hamann, C.. (1971). The growing of β‐copper phthalocyanine single crystals by evaporation. Kristall und Technik. 6(4). 491–498. 5 indexed citations
19.
Hamann, C. & H. Wagner. (1970). Über die thermische Umlagerung Aufgedampfter Kupferphthalocyanin‐Schichten. Zeitschrift für anorganische und allgemeine Chemie. 373(1). 18–29. 8 indexed citations
20.
Hamann, C., et al.. (1963). Die elektrischen und thermoelektrischen Eigenschaften von Phthalocyaninen. Die Naturwissenschaften. 50(8). 327–327. 28 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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