Thomas Waitz
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View article: Catalytic graphitization of single-crystal diamond
Catalytic graphitization of single-crystal diamond Open
Diamond and graphene are carbon allotropes with starkly different physical characteristics. Their combination into graphene-on-diamond heterostructures could benefit from the complementary properties of both components. Graphitization of s…
View article: In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi
In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi Open
A down‐sized high‐pressure torsion device is developed to be used in an INSTRON deformation machine available at the High Energy Materials Science beamline at PETRA III. This setup allows to obtain synchrotron diffraction patterns in situ …
View article: Ni-mediated reactions in nanocrystalline diamond on Si substrates: the role of the oxide barrier
Ni-mediated reactions in nanocrystalline diamond on Si substrates: the role of the oxide barrier Open
Nanocrystalline diamond films grown on Si/native oxide substrates were subjected to Ni-mediated graphitization. Transmission electron microscopy study revealed crystals of NiSi2 and SiC across the carbon/silicon interface in addition.
View article: Experiment on the Self-Aggregation of Amphiphiles
Experiment on the Self-Aggregation of Amphiphiles Open
Formation of supramolecular aggregates such as micelles and vesicles is governed by hydrophobic and hydrophilic interaction as well as the geometric shapes of the aggregating molecules. Here we present an experiment for upper secondary che…
View article: Covalent Diamond–Graphite Bonding: Mechanism of Catalytic Transformation
Covalent Diamond–Graphite Bonding: Mechanism of Catalytic Transformation Open
Aberration-corrected transmission electron microscopy of the atomic structure of diamond-graphite interface after Ni-induced catalytic transformation reveals graphitic planes bound covalently to the diamond in the upright orientation. The …
View article: Electrochemical Synthesis of Coin Metal Nanoparticles in School Chemistry Education
Electrochemical Synthesis of Coin Metal Nanoparticles in School Chemistry Education Open
Within this article we present the synthesis of coin metal nanoparticles and nanoporous surfaces by cathodic corrosion as school experiments. We further present two experiments utilizing the obtained materials as catalysts; the catalytic d…
View article: Plagioclase hosted Fe-Ti-oxide micro-inclusions in an oceanic gabbro-plagiogranite association from the Mid Atlantic ridge at 13 34' N
Plagioclase hosted Fe-Ti-oxide micro-inclusions in an oceanic gabbro-plagiogranite association from the Mid Atlantic ridge at 13 34' N Open
Shape and lattice orientation relations as well as chemical compositions of Fe-Ti-oxide micro-inclusions and plagioclase host crystals in rocks of a gabbro-plagiogranite assemblage from the Mid-Atlantic ridge at 13°349 N were studied using…
View article: Special cases of martensite compatibility: A near single-variant habit-plane and the martensite of nanocrystalline NiTi
Special cases of martensite compatibility: A near single-variant habit-plane and the martensite of nanocrystalline NiTi Open
\nLattice parameters measured near the high temperature (~1000°C) bcc α to hcp β transformation in an intermetallic Mo-containing γ-TiAl based alloy indicate a middle valued eigenvalue of the corresponding deformation gradient near 1. Habi…