Publication Highlights | Recent Publications
Landau-Zener dynamics of a single-ion magnet has been continuously monitored and theoretically modeled in a spin-transistor geometry.Phys. Rev. Lett. 118, 257701 (2017)
A printed vertical FET which decouples the channel length from printing resolution has been demonstrated.Adv. Mater. 29, 1603858 (2017)
Stimulated emission double depletion has been demonstrated as a method to selectively remove artificial background intensity.Nat. Photon. 11, 163 (2017)
Gate-controlled supramolecular spin-valve effect has been demonstrated and explained in terms of Fano resonances in Coulomb blockade.ACS Nano 11, 6868 (2017)
Fully reversible and robust magnetoelectric coupling has been realized in LaSrMnO/ionic liquid hybrid supercapacitors by exploiting surface electrostatic and electrochemical doping.Nat. Commun. 8, 15339 (2017)
Electrical properties of a p-type semiconductor have been experimentally mimicked by a chainmail-like metamaterial made of an n-type semiconductor.Phys. Rev. Lett. 118, 016601 (2017)
It has been demonstrated, by atomistic simulations, that monolayer graphene exhibits higher friction, which increases with sliding, than multilayer graphene.Nature 539, 541 (2016)
Optical waveguide-integrated generation and detection of nonclassical light have been demonstrated with electrically driven carbon nanotubes.Nat. Photon. 10, 727 (2016)
Laser-written 3D gold-containing microstructures have been fabricated by simultaneous photopolymerization and photoreduction.Adv. Mater. 28, 3592 (2016)
Spin-dependent thermoelectric currents have been observed in superconductor-ferromagnet tunnel junctions in high magnetic fields, probing the coupling of spin and heat transport in superconductors.Phys. Rev. Lett. 116, 097001 (2016)
Phospholipid membranes of different functionalities have been simultaneously assembled on arrays of graphene surfaces using multi-pen lipid dip-pen nanolithography.Nanoscale 8, 15147 (2016)
Electrically driven nanotubes can be forced to emit light with a specific color by integration into a photonic crystal waveguide.Nat. Photon. 10, 420 (2016)
Solution-processed high-performance MOSFETs and CMOS inverters have been obtained entirely at room temperature without an additional curing step.ACS Nano 9, 3075 (2015)
Best performing short-channel transistors have been built by using highly enriched semiconducting single-wall CNs prepared by combining polymer-wrapping with size-exclusion chromatography.ACS Nano 10, 1888 (2016)
An extension in magnetoelectric effects is proposed to include reversible chemistry-controlled magnetization variations.KIT Press Release in German
We synthesized a giant tetrahedral heterometallic polyoxometalate (POM)-based single molecule magnet which contains the largest number of 4f ions and is the first to incorporate two different 3d–4f and 4f coordination cluster assemblies within same POM framework.Angewandte Chemie, 22 Sep 2015
To properly describe the properties of metals used in nanoplasmonic devices in truly nanometric systems, we develop and apply for the first time a self-consistent hydrodynamic description.Nature Communications 6, May 2015
Microrings are prepared lithographically from diamond thin films, then coupled to photonic bus waveguides for on-chip readout.Advanced Optical Materials 3, March 2015
We show that the spatial arrangement of metallic nanoparticles embedded in a thermally responsive organic material can be substantially modified as a function of the temperature. This in turn strongly influences the optical properties of the entire metamaterial.Nature Communications 6, March 2015
Using low energy muon spin relaxation in combination with SQUID and TEM techniques, we demonstrate that the magnetic volume fraction is strongly related to the sample volume fraction occupied by
We are able to boost the photoluminescence quantum yield of colloidal dispersions of silicon nanocrystals capped with allylphenylsulfide.Small, 2015, 11(3)
We report on the use of highly paramagnetic isostructural FeIII/4f coordination clusters with a [Fe10Ln10] core to enhance relaxation. The Fe10Gd10 cluster adheres to the surface of the biofilm better than the commercial agent Gadovist.Dalton Trans., 2015
We demonstrate the use of DPN in directing and inducing protein crystallization on specific surface locations.J. Am. Chem. Soc., 2015
Featured on the cover of APL. We demonstrate that our circuits can excite higher order mechanical resonances up to 115 MHz both in vacuum and under ambient conditions.Appl. Phys. Lett. 105, 251102 (2014)
We have designed and studied van der Waals heterostructures based on graphene, mica and hexagonal boron nitride and show that hysteretic behavior can be very strong and persists even at millikelvin temperatures.Nanotechnology 26, 015202 (2015)
Here we show that, contrary to widely held belief, the magnitudes of excitation gaps do not always decay monotonously with N, but can oscillate due to the presence of a ‘Dirac cone’ in the band structure.Nature Communications, September, 2014
Advancing the current understanding of molecular spintronics, we use femtosecond absorption spectroscopy to show that the intramolecular electronic channels follow a three-step process.Advanced Functional Materials (2014) DOI: 10.1002/adfm.201400336
We demonstrate the use of variable-wavelength photocurrent microscopy and photocurrent spectroscopy to study the photoresponse of (n, m) sorted SWNT devices.ACS Nano (2014) DOI: 10.1021/nn503278d
KIT researchers have created the first mechanical invisibility cloak. When placed over an object, the object cannot be felt at all — either by a finger, or a more sensitive measuring device.Press Release in German
We provide a comparison between carbon nanotube - silicon solar cells fabricated with either semiconducting, metallic or mixed nanotubes.Physica Status Solidi A (2014) DOI: 10.1002/pssa.201431403
Waferscale, broadband sources are realized integrated with nanophotonic circuits allowing for propagation of light over centimeter distances.[Advanced Materials]
Chem. Mater., 2014, 26, 2337–2343
We study transport in the domain state, the so-called zero-resistance state, that emerges in a two-dimensional electron system in which the combined action of microwave radiation and magnetic field produces a negative absolute conductivity... Read more in:I. A. Dmitriev et al, Phys. Rev. Lett. 111, 206801 (2013)
We report experimental data and theoretical analysis of Coulomb drag between two closely positioned graphene monolayers in a weak magnetic field. Close enough to the neutrality point, the coexistence of electrons and holes in each layer leads to a dramatic increase of the drag resistivity... Read more in:M. Titov et al, Phys. Rev. Lett. 111, 166601 (2013)
Dynamic control over electronic transport is shown in ultra-high surface area graphene based bulk materials. The large macroscopic conductance of the nanographene monoliths can be varied up to several hundred percent with electrolyte-gating; paving ways towards carbon based bulk transistors.Advanced Materials 2012
Controlling light at the nanoscale by electrical fields requires objects, in which electro-magnetic properties are responsive to gating fields. In two recent publications it was shown that molecules fulfil this requirement and act as such quantum transducers. This article was presented as research highlight in Nature Photonics.
Nano Letters 2013 &
Using gas-phase ion chemistry the binding energy of molecular oxygen and carbon monoxide to heme analogue iron(II)porphyrin anions has been determined.
For more information see: Angew. Chem. Int. Ed. 52(39), 10374 (2013)
A.-M. Stadler, Israel J. Chem., 2013, 53, 113-121.
A single TbPc2 molecule and a carbon nanotube interact electro-mechanically as quantum objects.
Nature News and Views by Richard Winpenny.Nat. Nanotechnol. 2013
1-2013Nature Communications 4 (2012) 1379
A.-M. Stadler, J.-J. Jiang, H.-P. Wang, C. Bailly, Chem. Commun., 2013, 49, 3784-3786
Our new paper shows the possibilities of using graphene nanoribbons back-gates in microwave graphene field effect transistors on hexagonal boron nitride substrates.Appl. Phys. Lett. 102
Here we show that, contrary to widely held belief, the magnitudes of excitation gaps do not always decay monotonously with N, but can oscillate due to the presence of a ‘Dirac cone’ in the band structure.Read more
Pattern formation of the nanometer scale by self-organization. An example for biofunctional films is shown.
We studied the dynamics and energetics of the martensitic phase transition in the electric field on the nanometer scale.
Our paper "Small Ti clusters for catalysis of hydrogen exchange in NaAlH4" from 2003 in Nanotechnology has recently been awarded as one of the TOP 25 papers of the journal of the last 25 years.
We present a low-temperature experimental test of the fluctuation theorem for electron transport through a double quantum dot. The rare entropy-consuming system trajectories where single charges flow against the source-drain bias appear with a frequency that agrees with the theoretical predictions.Phys. Rev. X 2, 011001 (2012)
H. Rösner, C. Kübel, J. Ivanisenko, L. Kurmanaeva, S. Divinski, M. Peterlechner, G. Wilde, Acta Mat., 2011, 59, 7380-7387.More details
Nanoanalytics and nanolithography via AFM. Functional chemical patterns on surfaces can be written and subsequently imaged with the same AFM tip.
We measured the giant magnetoresistance of single Hydrogen-Phtalocyanine molecules of about 60%. This value is extremely large in view of the fact that they do not contain any magnetic atoms.
The Atomic Transistor. The controlled repositioning of one single silver atom allows for the reversible opening and closing of an electronic circuit.