J. Ullmann

474 citations

31 papers · 403 indexed · h-index 10

Impact in

Mechanics of Materials top 5%
- Metal and Thin Film Mechanics
Materials Chemistry
- Diamond and Carbon-based Materials Research
- Boron and Carbon Nanomaterials Research
- ZnO doping and properties

Papers in ⓘ

Materials Chemistry 23
- Diamond and Carbon-based Materials Research 21
- Boron and Carbon Nanomaterials Research 3
Computational Mechanics 20
- Ion-surface interactions and analysis 16
- Surface Roughness and Optical Measurements 2

Co-authors: J. E. E. Baglin (2 shared papers)G. Francz (1 shared paper)Petra Reinke (1 shared paper)P. Oelhafen (1 shared paper)G. Schmidt (3 shared papers)A. J. Kellock (1 shared paper)Gerhard Wolf (6 shared papers)W. Grünewald (2 shared papers)
Journals: Thin Solid Films (5 papers)Surface and Coatings Technology (4 papers)Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms (4 papers)Diamond and Related Materials (3 papers)Physical review. B, Condensed matter (1 paper)
Partner nations: Germany United States Japan

In The Last Decade

J. Ullmann

29 papers receiving 387 citations

Peers

Countries citing papers authored by J. Ullmann

Since Specialization

Citations

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

Fields of papers citing papers by J. Ullmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside J. Ullmann, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J. Ullmann Line = papers co-authored together J. Ullmann links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 31 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Application of the Tauc-Lorentz formulation to the interband absorption of optical coating materials Applied Optics ·Bernhard von Blanckenhagen, D. Tonova, J. Ullmann	2002	105
2	Structural changes in diamond and amorphous carbon induced by low-energy ion irradiation Physical review. B, Condensed matter ·Petra Reinke, G. Francz, P. Oelhafen, J. Ullmann	1996	55
3	Reduction of intrinsic stress in cubic boron nitride films Thin Solid Films ·J. Ullmann, A. J. Kellock, J. E. E. Baglin	1999	39
4	Effects of MeV ion irradiation of thin cubic boron nitride films Journal of Applied Physics ·J. Ullmann, J. E. E. Baglin, A. J. Kellock	1998	35
5	Low energy ion assisted carbon film growth: methods and mechanisms Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ·J. Ullmann	1997	16
6	Deposition of non-graphitic carbon films by low carbon particle energies Diamond and Related Materials ·J. Ullmann, G. Schmidt	1992	14
7	Diamond-like amorphous carbon films prepared by r.f. sputtering in argon: electron-assisted investigations Thin Solid Films ·J. Ullmann, S. Schulze, J. Erben, W. Grünewald, D. Heger, I. Mühling	1992	13
8	Diamond-like amorphous carbon films prepared by r.f. sputtering in argon Thin Solid Films ·J. Ullmann, G. Schmidt, W. Scharff	1992	12
9	Coated optics for DUV excimer laser application Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE ·J. Ullmann, M. Mertin, Hans Lauth, Helmut Bernitzki, Klaus Mann, Detlev Ristau, Winfried Arens, Roland Thielsch, Norbert Kaiser	2000	11
10	Ions as a useful tool for carbon film deposition and modification Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ·J. Ullmann, P. Heger, Katja Pinkert, K. Baba	1995	9
11	<title>Mechanical stress in fluoride coatings</title> Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE ·J. Ullmann, Hans-Georg Keck, Roland Thielsch, Hein Uhlig, Norbert Kaiser	1999	9
12	Low energy ion-induced damage of polycrystalline diamond films Diamond and Related Materials ·J. Ullmann, A. Weber, B. Mainz, J.O. Stiegler, T. Schuhrke	1994	9
13	The effect of a post-treatment of amorphous carbon films with high energy ion beams Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ·A. Kolitsch, E. Richter, H. Drummer, Ulf Roland, J. Ullmann	1995	8
14	Formation of boron nitride films with various amounts of the cubic phase Surface and Coatings Technology ·J. Ullmann, D. Heyden, G. Schwarz, Gerhard Wolf, K. Baba, R. Hatada	1997	7
15	Ion-assisted modification of the condensation of thermal carbon atoms Surface and Coatings Technology ·J. Ullmann, H. Martin, Gerhard Wolf	1993	7
16	Ion etching behaviour and surface binding energies of hard diamond-like carbon and microwave chemical vapour deposition diamond films Diamond and Related Materials ·J. Ullmann, Annekatrin Delan, G. Schmidt	1993	7
17	Ion stimulated densification of amorphous carbon films Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ·J. Ullmann, Gerhard Wolf, W. Möller	1993	6
18	Dispersion of the Valence Electron Energy Loss in ThinAmorphous Carbon Films deposited by Ion AssistedEvaporation of Graphite Microscopy Microanalysis Microstructures ·U. Falke, A. Weber, J. Ullmann	1995	5
19	Noble gas ion assisted evaporation of carbon Thin Solid Films ·J. Ullmann, U. Falke, W. Scharff, A. Schröer, Gerhard Wolf	1993	5
20	Proposal of a novel in situ stress-reducing method for the growth of c-BN Thin Solid Films ·J. Ullmann	1998	4

About J. Ullmann

J. Ullmann is a scholar working on Materials Chemistry, Computational Mechanics, Mechanics of Materials, Electrical and Electronic Engineering and Surfaces, Coatings and Films, having authored 31 papers that have together received 403 indexed citations. Recurring topics across this work include Diamond and Carbon-based Materials Research (21 papers), Ion-surface interactions and analysis (16 papers), Metal and Thin Film Mechanics (14 papers), Semiconductor materials and devices (5 papers), Boron and Carbon Nanomaterials Research (3 papers), Optical Coatings and Gratings (3 papers), Electron and X-Ray Spectroscopy Techniques (2 papers) and Surface Roughness and Optical Measurements (2 papers). The work is most often cited by research in Mechanics of Materials (195 citations), Materials Chemistry (304 citations), Surfaces, Coatings and Films (43 citations), Computational Mechanics (114 citations) and Electrical and Electronic Engineering (142 citations). J. Ullmann has collaborated with scholars based in Germany, United States and Japan. Frequent co-authors include J. E. E. Baglin, G. Francz, Petra Reinke, P. Oelhafen, G. Schmidt, A. J. Kellock, Gerhard Wolf, W. Grünewald, Roland Thielsch and Norbert Kaiser. Their work appears in journals such as Thin Solid Films, Surface and Coatings Technology, Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, Diamond and Related Materials and Physical review. B, Condensed matter.

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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