Michael Häfner

ORCID: 0009-0003-8980-0222
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About
Contact & Profiles
Research Areas
  • Metal-Organic Frameworks: Synthesis and Applications
  • TGF-β signaling in diseases
  • Control Systems in Engineering
  • GNSS positioning and interference
  • Advanced Nanomaterials in Catalysis
  • Cancer Research and Treatments
  • Nanoplatforms for cancer theranostics
  • Cancer Cells and Metastasis
  • Molecular Junctions and Nanostructures
  • IL-33, ST2, and ILC Pathways
  • Molecular Sensors and Ion Detection
  • Electric and Hybrid Vehicle Technologies
  • Real-time simulation and control systems
  • Force Microscopy Techniques and Applications
  • Cytokine Signaling Pathways and Interactions
  • Pulsars and Gravitational Waves Research
  • Advanced Frequency and Time Standards
  • Dental Implant Techniques and Outcomes
  • Photoacoustic and Ultrasonic Imaging
  • Geophysics and Gravity Measurements
  • Electromagnetic Compatibility and Measurements
  • Advanced Measurement and Metrology Techniques
  • Autonomous Vehicle Technology and Safety
  • Electromagnetic Launch and Propulsion Technology
  • Biopolymer Synthesis and Applications

Graz University of Technology
2020-2025

Ford Motor Company (United States)
2022

Karlsruhe Institute of Technology
2004-2020

Krankenhaus der Elisabethinen
2015

University of Concepción
2014

Meggitt (Switzerland)
2012

Universidad Autónoma de Madrid
2009

Universität Ulm
2006

Charité - Universitätsmedizin Berlin
2006

Hydrogen-bonded Organic Frameworks (HOFs) emerged as a matrix for preparing higly active and stable enzyme biocomposites in biocompatible synthesis conditions. Here, we demonstrate that combination of mechanochemistry accelerated aging processes can be used to synthesize HOF with improved loading, activity, protection. Advanced characterization techniques, including situ Wide Angle X-ray Scattering Transmission Electron Microscopy, provide insights into the formation mechanisms structural...

10.26434/chemrxiv-2025-x484t preprint EN cc-by-nc 2025-03-12

Real-time clearance control in turbine engines allows improving their efficiency and safety, by enabling prognostics optimized condition-based maintenance the hot section. This paper presents a novel 24 GHz microwave sensing system for real-time blade tip monitoring suitable small-size turbines (aero-engines aero-derivatives). The principle of operation is similar to short range radar technique employs high temperature resistant circular waveguide resonator probes mounted into shell turbine....

10.1109/icsens.2012.6411229 article EN IEEE Sensors 2012-10-01

Recent experiments in ferromagnetic atomic-sized contacts have shown that the anisotropic magnetoresistance (AMR) is greatly enhanced and has an asymmetric angular dependence as compared with of bulk samples. The origin these effects still under debate. In this work, we present a theoretical analysis AMR atomic $3d$ materials. Our results strongly suggest anomalous stems from reduced symmetry contact geometries. We also calculations supporting idea pronounced voltage temperature some can be...

10.1103/physrevb.79.140410 article EN Physical Review B 2009-04-29

3132 Background: Tumor derived transforming growth factor beta (TGF-β) is a pivotal for malignant progression by inducing metastasis, angiogenesis and tumor cell proliferation mediating the tumors' escape from immunosurveillance. In colorectal, non-small lung prostate cancer in particular expression of TGF-β1 isoform has been correlated with poor clinical prognosis. Significantly elevated plasma levels to more than 3fold colon (median control: 6,200 pg/ml, range: 1,977 - 17,515 pg/ml; median...

10.1200/jco.2004.22.14_suppl.3132 article EN Journal of Clinical Oncology 2004-07-15

The performance of zeolitic imidazolate frameworks (ZIFs) as protective hosts for proteins in drug delivery or biocatalysis strongly depends on the type crystalline phase used encapsulation biomacromolecule (biomacromolecule@ZIF). Therefore, quantifying different crystal phases and amount amorphous content ZIFs is becoming increasingly important a better understanding structure-property relationship. Typically, ZIF are qualitatively identified from diffraction patterns. However, accurate...

10.1039/d2ce00073c article EN cc-by CrystEngComm 2022-01-01

This paper discusses the application of microwave sensing to turbine airfoil health monitoring. The proposed system operates at 6- and 24-GHz is applicable both blade tip-clearance tip-timing measurements. One main advantages systems, compared other technology such as capacitive or eddy current, that it can be installed for long term operations in harsh environment first stages. monitoring pattern useful detecting abnormal behavior due structural damage. Such a also used actively maintaining...

10.36001/phme.2012.v1i1.1441 article EN cc-by PHM Society European Conference 2012-07-03

Article Modellbasierte stationäre und dynamische Optimierung von Verbrennungsmotoren am Motorenprüfstand unter Verwendung neuronaler Netze was published on April 1, 2002 in the journal at - Automatisierungstechnik (volume 50, issue 4).

10.1524/auto.2002.50.4.192 article DE at - Automatisierungstechnik 2002-04-01

We have determined the transmission coefficients of atomic-sized Zn contacts using a new type breakjunction which contains whisker as central bridge. find that in last conductance plateau transport is unexpectedly dominated by well-transmitting single conduction channel. explain experimental findings with help tight-binding model shows an one-atom contact current proceeds through 4s and 4p orbitals atom.

10.1103/physrevb.70.241404 article EN Physical Review B 2004-12-28

Abstract The purpose of this work was to demonstrate the technical feasibility for fabrication microgrooves or micropits on dental implants implant abutment surfaces using a novel method derived from common UV-lithographic microfabrication. Instead flat and rigid chromium/glass mask structure photoresist layer small cylindrical part, flexible chromium-coated polymer introduced into lithographic setup. Through an elastic deformation mask, it possible achieve lateral resolutions as 1.5 µ m...

10.1088/1361-6439/ab70c0 article EN cc-by Journal of Micromechanics and Microengineering 2020-01-30

Insoluble fatty acids that trigger the growth of luminescent MOFs on fingerprint residues were employed for precise positioning MOFs.

10.1039/d0cc03876h article EN cc-by Chemical Communications 2020-01-01

In this paper, a detailed comparative performance analysis of the two-color satellite laser ranging (SLR) systems Transportable Integrated Geodetic Observatory (TIGO) is presented. The study based on four years continuous measurement data and comparison two different layouts system. focus lies quantitative precision, range accuracy, production for system layouts. Main findings include significant gain in temporal stability due to removal active elements oscillator, an improvement accuracy by...

10.1109/tgrs.2013.2283771 article EN IEEE Transactions on Geoscience and Remote Sensing 2014-01-31

Abstract Eine manuelle Applikation der Motorsteuerung gestaltet sich aufgrund zusätzlicher Stellgrößen immer schwieriger. Als Alternative bieten modellgestützte Ansätze an. Diese stellen jedoch hohe Ansprüche an die Modelle — besonders wenn das Emissionsverhalten unmittelbar berücksichtigt werden soll. Hier dynamische neuronale Netze vorgeschlagen, auf Daten einer sehr schnellen dynamischen Vermessung des Motorverhaltens am Prüfstand basieren. Die stationäre Kennfeldoptimierung erfolgt...

10.1524/auto.51.5.213.19570 article DE at - Automatisierungstechnik 2003-05-01

Hintergrund: Chronisch-entzündliche Darmerkrankungen (CED) treten in Europa mit einer Inzidenz von 13/100.000 (CD) und 24/100.000 (CU) zunehmender Häufigkeit auf. Da diese beiden Erkrankungen meist im jungen Erwachsenenalter beginnen, erfordern sie eine lebenslange Betreuung aufgrund der extraintestinalen Manifestationen interdisziplinäre Behandlung betroffenen Patienten. Für Diejenigen, die stationären bei kompliziertem Verlauf benötigen, verfügt Interne Abteilung des Krankenhaus St....

10.1055/s-0035-1551695 article DE Zeitschrift für Gastroenterologie 2015-05-12

14012 Background: TGF-β overexpression in advanced tumors is correlated with tumor-induced immunosuppression, proliferation and angiogenesis. Furthermore, it a key factor for induction of epithelial to mesenchymal transition (EMT), thus promoting invasion metastasis. Targeted tumor therapy by an antisense oligonucleotide has already been proven be successful therapy: AP 12009, TGF-β2-mRNA-specific oligodeoxynucleotide, shown strong clinical indication efficacy including complete lasting...

10.1200/jco.2006.24.18_suppl.14012 article EN Journal of Clinical Oncology 2006-06-20

The performance of Zeolitic Imidazolate Frameworks (ZIFs) as protective hosts for proteins in drug delivery or biocatalysis strongly depends on the type crystalline phases used encapsulation biomacromolecule (biomacromolecule@ZIF). Therefore, quantifying different crystal phases, and amount amorphous content ZIFs is becoming increasingly important a better understanding structure-property relationship. Typically, ZIF are qualitatively identified from diffraction patterns. However, accurate...

10.26434/chemrxiv-2021-4zpnp preprint EN cc-by-nc-nd 2021-12-30
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