Browsing by Author "Steinmuller, S. J."

Now showing items 1-10 of 10

    • Article  

      Efficient spin detection across the hybrid Co/GaAs schottky interface 

      Trypiniotis, Theodossis; Tse, D. H. Y.; Steinmuller, S. J.; Cho, W. S.; Bland, J. A. C. (2007)
      The electron spin detection efficiency was studied across Co/GaAs structures using photoexcitation techniques. Two sets of samples were prepared where the substrate surface was pretreated by annealing prior to growth for ...
    • Article  

      Electron spin filtering in ferromagnet/semiconductor heterostructures 

      Bland, J. A. C.; Steinmuller, S. J.; Hirohata, A.; Cho, W. S.; Xu, Y. B.; Guertler, C. M.; Wastlbauer, G.; Ionescu, A.; Trypiniotis, Theodossis; Holmes, S. N. (2003)
      Circularly polarized light was used to generate spin-polarized electrons at room temperature in ferromagnet (FM)/GaAs Schottky diode structures. A change in the helicity-dependent photocurrent was obtained when the ...
    • Conference Object  

      High throughput biological analysis using multi-bit magnetic digital planar tags 

      Hong, B.; Jeong, J. -R; Llandro, J.; Hayward, T. J.; Ionescu, A.; Trypiniotis, Theodossis; Mitrelias, Thanos; Kopper, K. P.; Steinmuller, S. J.; Bland, J. A. C. (2008)
      We report a new magnetic labelling technology for high-throughput biomolecular identification and DNA sequencing. Planar multi-bit magnetic tags have been designed and fabricated, which comprise a magnetic barcode formed ...
    • Article  

      Highly efficient spin filtering of ballistic electrons 

      Steinmuller, S. J.; Trypiniotis, Theodossis; Cho, W. S.; Hirohata, A.; Lew, W. S.; Vaz, C. A. F.; Bland, J. A. C. (2004)
      Spin dependent electron transport in hybrid Au/Co/Cu/NiFe/n-GaAs spin valve Schottky barrier structures was investigated using photoexcitation at various wavelengths. For excitation with the photon energy well above the ...
    • Conference Object  

      Highly efficient spin filtering of ballistic electrons in hybrid spin valve/semiconductor structures 

      Steinmuller, S. J.; Trypiniotis, Theodossis; Hirohata, A.; Cho, W. S.; Lew, W. S.; Vaz, C. A. F.; Bland, J. A. C. (2004)
      The highly efficient spin filtering of ballistic electrons in hybrid spin valve/semiconductor (SC) structures was discussed. It was found that the photocurrent was dependent on the relative alignment of the light helicity ...
    • Article  

      Initial/final state selection of the spin polarization in electron tunneling across an epitaxial FeGaAs (001) interface 

      Kurebayashi, H.; Steinmuller, S. J.; Laloë, J. B.; Trypiniotis, Theodossis; Easton, S.; Ionescu, A.; Yates, J. R.; Bland, J. A. C. (2007)
      Spin dependent electron transport across epitaxial FeGaAs (001) interfaces has been investigated using photoexcitation techniques. Spin filtering is observed in the forward bias regime and its sign is switched by using ...
    • Conference Object  

      Magnetic microtags and magnetic encoding for applications in biotechnology 

      Mitrelias, Thanos; Trypiniotis, Theodossis; Van Belle, F.; Kopper, K. P.; Steinmuller, S. J.; Anthony, J.; Bland, C.; Robertson, P. A. (2008)
      Microarrays and suspension-based technologies have attracted significant interest recently due to their broad range of applications in medical diagnostics and high throughput molecular biology. The throughput of microarrays ...
    • Article  

      Novel multibit magnetic tagging techniques for high-throughput multiplexed chemical analysis 

      Hong, B.; Llandro, J.; Hayward, T. J.; Mitrelias, Thanos; Kopper, K. P.; Trypiniotis, Theodossis; Steinmuller, S. J.; Barnes, C. H. W.; Van Phong, L.; Kim, C.; Jeong, J. -R (2009)
      In this paper, we have investigated a remote encoding/decoding method of micrometer-sized multibit magnetic tags and demonstrated the operation of magnetic digital tags to discuss the practical issues which arise. The tags ...
    • Article  

      Rewritable remote encoding and decoding of miniature multi-bit magnetic tags for high-throughput biological analysis 

      Jeong, J. -R; Llandro, J.; Hong, B.; Hayward, T. J.; Mitrelias, Thanos; Kopper, K. P.; Trypiniotis, Theodossis; Steinmuller, S. J.; Simpson, G. K.; Bland, J. A. C. (2008)
      We have investigated a new magnetic labelling technology for high-throughput biomolecular identification and DNA sequencing. Planar multi-bit magnetic tags comprising a magnetic barcode formed by an ensemble of micron-sized ...
    • Article  

      Static and dynamic magnetic properties of Ni80 Fe20 square antidot arrays 

      Tse, D. H. Y.; Steinmuller, S. J.; Trypiniotis, Theodossis; Anderson, D.; Jones, G. A. C.; Bland, J. A. C.; Barnes, C. H. W. (2009)
      We have investigated both static and dynamic magnetic properties of square antidot arrays in a ferromagnetic thin-film structure of Au (2 nm)/ Ni80 Fe20 (27.6 nm) on a SiO2 500 nm/Si substrate using magneto-optic Kerr ...