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H. Gnaser · SciRah

Researcher profile · Semantic Scholar

H. Gnaser

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H. Gnaser — researcher profile on SciRah

h-index: 33
Works: 182
Citations: 3,499

Most-cited papers

Photocatalytic degradation of methylene blue on nanocrystalline TiO2: Surface mass spectrometry of reaction intermediates
H. Gnaser, M. Savina, Wallis F. Calaway, C. Emil Tripa +2 more
2005139 citations
Semantic Scholar
Phase transformation and particle growth in nanocrystalline anatase TiO2 films analyzed by X-ray diffraction and Raman spectroscopy
A. Orendorz, A. Brodyanski, J. Lösch, Lihui Bai +4 more
2007136 citations
Semantic Scholar
Detailed Characterization of Various Porous Alumina-Based Catalyst Coatings Within Microchannels and Their Testing for Methanol Steam Reforming
R. Zapf, C. Becker-Willinger, K. Berresheim, H. Bolz +6 more
2003116 citations
Semantic Scholar
Steam reforming of methanol over Cu/CeO2/γ-Al2O3 catalysts in a microchannel reactor
Yong Men, H. Gnaser, R. Zapf, V. Hessel +2 more
200487 citations
Semantic Scholar
Nanocrystalline anatase TiO2 thin films: preparation and crystallite size-dependent properties
B. Huber, A. Brodyanski, M. Scheib, A. Orendorz +2 more
200579 citations
Semantic Scholar
Photoelectron spectroscopy of nanocrystalline anatase TiO2 films
A. Orendorz, Jens Wüsten, C. Ziegler, H. Gnaser
200569 citations
Semantic Scholar
Location and Electronic Nature of Phosphorus in the Si Nanocrystal − SiO2 System
D. König, S. Gutsch, H. Gnaser, M. Wahl +5 more
2015Scientific Reports62 citations Open access
Semantic Scholar
Phosphorus doping of Si nanocrystals embedded in silicon oxynitride determined by atom probe tomography
H. Gnaser, S. Gutsch, M. Wahl, R. Schiller +3 more
201460 citations
Semantic Scholar
Energy and Angular Distributions of Sputtered Species
H. Gnaser
200757 citations
Semantic Scholar
Strongly reduced fragmentation and soft emission processes in sputtered ion formation from amino acid films under large Ar(n)+ (n ≤ 2200) cluster ion bombardment.
H. Gnaser, K. Ichiki, J. Matsuo
2012Rapid Communications in Mass Spectrometry50 citations
Semantic Scholar
Focused ion beam implantation of Ga in Si and Ge: fluence‐dependent retention and surface morphology
H. Gnaser, A. Brodyanski, B. Reuscher
200848 citations
Semantic Scholar
Photocatalytic decomposition of methylene blue and 4-chlorophenol on nanocrystalline TiO2 films under UV illumination: A ToF-SIMS study
A. Orendorz, C. Ziegler, H. Gnaser
200844 citations
Semantic Scholar
Parallel screening of Cu/CeO2/γ-Al2O3 catalysts for steam reforming of methanol in a 10-channel micro-structured reactor
Yong Men, H. Gnaser, R. Zapf, V. Hessel +1 more
200441 citations
Semantic Scholar
Electrical properties of nanocrystalline anatase TiO2 thin films with different crystallite size
B. Huber, H. Gnaser, C. Ziegler
200437 citations
Semantic Scholar
Experimental and theoretical evidence for long-lived molecular hydrogen anions H2- and D2-.
R. Golser, H. Gnaser, W. Kutschera, A. Priller +5 more
2005Physical Review Letters34 citations
Semantic Scholar
Energy spectra of sputtered species under sub-keV ion bombardment: experiments and computer simulations
T. Mousel, W. Eckstein, H. Gnaser
199934 citations
Semantic Scholar
Electronic properties of phosphorus doped silicon nanocrystals embedded in SiO2
S. Gutsch, J. Laube, D. Hiller, W. Bock +5 more
201533 citations
Semantic Scholar
Optical and Structural Characterization of Erbium-Doped TiO2 Xerogel Films Processed on Porous Anodic Alumina
N. Gaponenko, O. Sergeev, E. Stepanova, V. Parkun +6 more
200132 citations
Semantic Scholar
Singly- and doubly-negative carbon clusters in sputtering: Energy spectra, abundance distributions and unimolecular fragmentation
H. Gnaser
199931 citations
Semantic Scholar
Lifetimes of the negative molecular hydrogen ions : H2-, D2-, and HD-
O. Heber, R. Golser, H. Gnaser, D. Berkovits +4 more
200628 citations
Semantic Scholar
Ionization probability of sputtered negative cluster ions: Dependence on surface work function and emission velocity
H. Gnaser
200126 citations
Semantic Scholar
Protein films adsorbed on experimental dental materials: ToF-SIMS with multivariate data analysis
F. Bernsmann, Nicole Lawrence, M. Hannig, C. Ziegler +1 more
2008Analytical and Bioanalytical Chemistry24 citations
Semantic Scholar
Dynamics of l-Phenylalanine Sputtering by Argon Cluster Bombardment
Christian Mücksch, Christian Anders, H. Gnaser, H. Urbassek
201423 citations
Semantic Scholar
Structural transformations in nanocrystalline anatase TiO2 films upon annealing in air
A. Orendorz, A. Brodyanski, J. Lösch, Lihui Bai +4 more
200623 citations
Semantic Scholar
Propagation of nanoscale ripples on ion-irradiated surfaces
H. Gnaser, Bernhard Reuscher, A. Zeuner
201222 citations
Semantic Scholar
DOUBLY CHARGED NEGATIVE SILICON-CARBON CLUSTERS PRODUCED IN SPUTTERING
H. Gnaser
199922 citations
Semantic Scholar
Ionization probability of sputtered cluster anions: Cn- and Sin-
H. Gnaser
200321 citations
Semantic Scholar
Negative cluster ions in sputtering of Si, SiC and graphite: Abundance distributions, energy spectra and fragmentation processes
H. Gnaser
200020 citations
Semantic Scholar
Sputtered ion emission under size‐selected Arn+ cluster ion bombardment
H. Gnaser, K. Ichiki, J. Matsuo
201319 citations
Semantic Scholar
Characterization of Cu/CeO2/γ-Al2O3 Thin Film Catalysts by Thermal Desorption Spectroscopy
Yong Men, H. Gnaser, C. Ziegler, R. Zapf +2 more
200519 citations
Semantic Scholar
Fast preparation and testing methods using a microstructured modular reactor for parallel gas phase catalyst screening
Andreas Müller, K. Drese, H. Gnaser, M. Hampe +4 more
200318 citations
Semantic Scholar
Discovery of a new class of stable gas-phase dianions: Mixed oxygen–carbon cluster OCn2− (n=5–19)
H. Gnaser, A. Dreuw, L. Cederbaum
200218 citations
Semantic Scholar
Wavelength-dependent ripple propagation on ion-irradiated prepatterned surfaces driven by viscous flow corroborates two-field continuum model
Detlef Kramczynski, Bernhard Reuscher, H. Gnaser
201416 citations
Semantic Scholar
Peptide dissociation patterns in secondary ion mass spectrometry under large argon cluster ion bombardment.
H. Gnaser, M. Fujii, S. Nakagawa, T. Seki +2 more
2013Rapid Communications in Mass Spectrometry16 citations
Semantic Scholar
Adsorption/desorption studies on nanocrystalline alumina surfaces
Yong Men, H. Gnaser, C. Ziegler
2003Analytical and Bioanalytical Chemistry16 citations
Semantic Scholar
Molecular anions sputtered from fluorides
H. Gnaser
200216 citations
Semantic Scholar
Focused ion beam implantation of Ga in nanocrystalline diamond: Fluence-dependent retention and sputtering
H. Gnaser, Bernhard Reuscher, A. Brodyanski
200815 citations
Semantic Scholar
Structural investigation of pristine and annealed nanocrystalline TiO2 thin films by X-ray diffraction and Raman spectroscopy
A. Orendorz, A. Brodyanski, J. Lösch, Lihui Bai +4 more
200715 citations
Semantic Scholar
Energetics of MCs+n molecular ions emitted from Cs+ irradiated surfaces
S. Sarkar, P. Chakraborty, H. Gnaser
200415 citations
Semantic Scholar
Reassessment of 182Hf AMS measurements at VERA
O. Forstner, H. Gnaser, R. Golser, D. Hanstorp +6 more
201114 citations
Semantic Scholar
Characterization of nanocrystalline anatase TiO2 thin films
B. Huber, H. Gnaser, C. Ziegler
2003Analytical and Bioanalytical Chemistry13 citations
Semantic Scholar
Atom probe tomography of nanostructures
H. Gnaser
201412 citations
Semantic Scholar
Self-organizing nanodot structures on InP surfaces evolving under low-energy ion irradiation: analysis of morphology and composition
Tobias Radny, H. Gnaser
2014Nanoscale Research Letters12 citations Open access
Semantic Scholar
Nanostructures on surfaces by ion irradiation
H. Gnaser
201112 citations Open access
Semantic Scholar
Temperature‐dependent grain growth and phase transformation in mixed anatase‐rutile nanocrystalline TiO2 films
H. Gnaser, J. Lösch, A. Orendorz, C. Ziegler
201112 citations
Semantic Scholar
Nitrogen incorporation and trace element analysis of nanocrystalline diamond thin films by secondary ion mass spectrometry
D. Zhou, F. Stevie, Chow Lee, J. Mckinley +2 more
199912 citations
Semantic Scholar
Exact compositional analysis of SiGe alloys by matrix effect compensated MCs+-SIMS
B. Saha, P. Chakraborty, H. Gnaser, Manjula Sharma +1 more
201211 citations
Semantic Scholar
Isotopic fractionation of sputtered anions: C - and C2-
H. Gnaser
200811 citations
Semantic Scholar
Verification of long-lived molecular hydrogen anions (H{sub n}{sup -}, D{sub n}{sup -}, n=2,3) by secondary-ion mass spectrometry
H. Gnaser, R. Golser
200611 citations
Semantic Scholar
Greatly enhanced detection sensitivity for carbon, nitrogen, and oxygen in silicon by secondary-ion-mass spectrometry
H. Gnaser
200110 citations
Semantic Scholar

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