Janos Voros

Summary

Affiliation: Swiss Federal Institute of Technology
Country: Switzerland

Publications

  1. pmc The density and refractive index of adsorbing protein layers
    Janos Voros
    BioInterface Group, Laboratory for Surface Science and Technology, ETH Zurich, Schlieren, Switzerland
    Biophys J 87:553-61. 2004
  2. pmc Interaction of poly(L-lysine)-g-poly(ethylene glycol) with supported phospholipid bilayers
    Fernanda F Rossetti
    Bio Interface Group, Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology, Zurich, Switzerland
    Biophys J 87:1711-21. 2004
  3. ncbi request reprint A novel crossed microfluidic device for the precise positioning of proteins and vesicles
    Marc R Dusseiller
    Swiss Federal Institute of Technology ETHZ Zurich, Department of Materials, Laboratory for Surface Science and Technology, BioInterface Group, CH 8093 Zurich, Switzerland
    Lab Chip 5:1387-92. 2005
  4. ncbi request reprint Immobilization of the enzyme beta-lactamase on biotin-derivatized poly(L-lysine)-g-poly(ethylene glycol)-coated sensor chips: a study on oriented attachment and surface activity by enzyme kinetics and in situ optical sensing
    Guoliang Zhen
    BioInterfaceGroup, Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology ETH Zurich, Wolfgang Pauli Strasse 10, CH 8093 Zurich, Switzerland
    Langmuir 20:10464-73. 2004
  5. ncbi request reprint Nanopatterns with biological functions
    Thomas Blättler
    BioInterface Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Switzerland
    J Nanosci Nanotechnol 6:2237-64. 2006
  6. doi request reprint FluidFM as a lithography tool in liquid: spatially controlled deposition of fluorescent nanoparticles
    Raphael R Grüter
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH 8092, Switzerland
    Nanoscale 5:1097-104. 2013
  7. doi request reprint Ion-induced cell sheet detachment from standard cell culture surfaces coated with polyelectrolytes
    Raphael Zahn
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Biomaterials 33:3421-7. 2012
  8. doi request reprint Electrochemistry on a localized surface plasmon resonance sensor
    Takumi Sannomiya
    Laboratory of Biosensors and Bioelectronics, Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland
    Langmuir 26:7619-26. 2010
  9. doi request reprint Simultaneous electrical and plasmonic monitoring of potential induced ion adsorption on metal nanowire arrays
    Robert MacKenzie
    ETH Zurich, Institute for Biomedical Engineering, Zurich, Switzerland
    Nanoscale 5:4966-75. 2013
  10. doi request reprint Biosensing by densely packed and optically coupled plasmonic particle arrays
    Takumi Sannomiya
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Small 5:1889-96. 2009

Collaborators

Detail Information

Publications43

  1. pmc The density and refractive index of adsorbing protein layers
    Janos Voros
    BioInterface Group, Laboratory for Surface Science and Technology, ETH Zurich, Schlieren, Switzerland
    Biophys J 87:553-61. 2004
    ..Our measurements indicated that water and solvent molecules not only influence the 3D structure of proteins in solution but also play a crucial role in their adsorption onto surfaces...
  2. pmc Interaction of poly(L-lysine)-g-poly(ethylene glycol) with supported phospholipid bilayers
    Fernanda F Rossetti
    Bio Interface Group, Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology, Zurich, Switzerland
    Biophys J 87:1711-21. 2004
    ..Other factors included the ionic strength of the buffer used and the quality of the bilayers, pointing toward the important role defects present in the SPBs play in the decomposition process...
  3. ncbi request reprint A novel crossed microfluidic device for the precise positioning of proteins and vesicles
    Marc R Dusseiller
    Swiss Federal Institute of Technology ETHZ Zurich, Department of Materials, Laboratory for Surface Science and Technology, BioInterface Group, CH 8093 Zurich, Switzerland
    Lab Chip 5:1387-92. 2005
    ..We have demonstrated the feasibility of such a device to create a chessboard pattern of different fluorescently labeled lipid vesicles, which offers the possibility to contain biomolecules, drugs or membrane proteins...
  4. ncbi request reprint Immobilization of the enzyme beta-lactamase on biotin-derivatized poly(L-lysine)-g-poly(ethylene glycol)-coated sensor chips: a study on oriented attachment and surface activity by enzyme kinetics and in situ optical sensing
    Guoliang Zhen
    BioInterfaceGroup, Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology ETH Zurich, Wolfgang Pauli Strasse 10, CH 8093 Zurich, Switzerland
    Langmuir 20:10464-73. 2004
    ..No significant effect of different enzyme orientations could be detected, probably because the enzymes were attached to the surface through long, flexible PEG chain linkers...
  5. ncbi request reprint Nanopatterns with biological functions
    Thomas Blättler
    BioInterface Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Switzerland
    J Nanosci Nanotechnol 6:2237-64. 2006
    ..This review further illustrates the rapid pace by which advances are being made in the field of nanobiotechnology, owing to an increasing number of research endeavors, for an ever increasing number of applications...
  6. doi request reprint FluidFM as a lithography tool in liquid: spatially controlled deposition of fluorescent nanoparticles
    Raphael R Grüter
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, CH 8092, Switzerland
    Nanoscale 5:1097-104. 2013
    ..The described method demonstrates the potential of FluidFM in depositing nano-sized objects in liquid with nanometre precision...
  7. doi request reprint Ion-induced cell sheet detachment from standard cell culture surfaces coated with polyelectrolytes
    Raphael Zahn
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Biomaterials 33:3421-7. 2012
    ..The dissolution of polyelectrolyte multilayers by multivalent ions is a promising approach to cell sheet engineering that could potentially be used for regenerative medicine...
  8. doi request reprint Electrochemistry on a localized surface plasmon resonance sensor
    Takumi Sannomiya
    Laboratory of Biosensors and Bioelectronics, Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland
    Langmuir 26:7619-26. 2010
    ..We consider the results presented here of importance for any future sensors based on combined plasmonics and electrochemistry...
  9. doi request reprint Simultaneous electrical and plasmonic monitoring of potential induced ion adsorption on metal nanowire arrays
    Robert MacKenzie
    ETH Zurich, Institute for Biomedical Engineering, Zurich, Switzerland
    Nanoscale 5:4966-75. 2013
    ..This is the first demonstration of combined plasmonic and nanowire resistance-based sensing of a surface process in the literature...
  10. doi request reprint Biosensing by densely packed and optically coupled plasmonic particle arrays
    Takumi Sannomiya
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Small 5:1889-96. 2009
    ..The detectable concentration limit of streptavidin within 3000 s in the detection system is expected from the signal-to-noise to be less than 150 pM...
  11. doi request reprint Label-free detection of cell-contractile activity with lipid nanotubes
    Kaori Sugihara
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH 8092 Zurich, Switzerland
    Integr Biol (Camb) 5:423-30. 2013
    ..Additionally, the method was applied to detect the effect of a specific inhibitor on the generation of cellular forces. The mechanism of the LNT-cell interaction and the potential applications are discussed...
  12. doi request reprint Directed self-assembly of lipid nanotubes from inverted hexagonal structures
    Kaori Sugihara
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH 8092 Zurich, Switzerland
    ACS Nano 6:6626-32. 2012
    ..1 ± 4.5 nm and their lengths are up to several hundred micrometers. The method described enables the alignment and patterning of lipid nanotubes into various (including curvy) shapes with a microfluidic system...
  13. pmc Optical sensing with simultaneous electrochemical control in metal nanowire arrays
    Robert MacKenzie
    Laboratory of Biosensors and Bioelectronics, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Sensors (Basel) 10:9808-30. 2010
    ..In addition, the formation of an ionic layer (Stern-layer) upon applying an electrochemical potential was also monitored by the shift of the plasmon resonance...
  14. doi request reprint A gigaseal obtained with a self-assembled long-lifetime lipid bilayer on a single polyelectrolyte multilayer-filled nanopore
    Kaori Sugihara
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH 8092 Zurich, Switzerland
    ACS Nano 4:5047-54. 2010
    ..5 weeks. The long lifetime of the system enabled the observation of the time-dependent stabilization effect of the melittin open state upon bias application...
  15. doi request reprint In situ sensing of single binding events by localized surface plasmon resonance
    Takumi Sannomiya
    Department of Information Technology and Electrical Engineering, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Nano Lett 8:3450-5. 2008
    ..Our simulation based on a multiple multipole program showed that the peak shift is dependent on interparticle gap size and binding position. The experimental peak shift distribution was also reproduced by simulation...
  16. doi request reprint Electrochemically switchable platform for the micro-patterning and release of heterotypic cell sheets
    Orane Guillaume-Gentil
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Biomed Microdevices 13:221-30. 2011
    ....
  17. doi request reprint Controlled in situ nanoscale enhancement of gold nanowire arrays with plasmonics
    Robert MacKenzie
    Laboratory of Biosensors and Bioelectronics, ETH Zurich, Zurich, Switzerland
    Nanotechnology 22:055203. 2011
    ..The result was the successful enhancement of their electrically conductive and plasmonic properties, as well as the controlled growth and transformation of line-patterned nanoparticles into conductive particle-based nanowires...
  18. doi request reprint Electrically induced lipid migration in non-lamellar phase
    Kaori Sugihara
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
    J Colloid Interface Sci 386:421-7. 2012
    ..The free-drawing of microscopic objects (lines, crosses, and jelly fish) was also achieved by controlling the direction of the lipid movement with the field direction...
  19. doi request reprint Spontaneous formation of a vesicle multilayer on top of an exponentially growing polyelectrolyte multilayer mediated by diffusing poly-L-lysine
    Norma Graf
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
    J Phys Chem B 115:12386-91. 2011
    ..This method could be interesting for applications in sensors and drug delivery systems where the increase in loading capacity is highly desired...
  20. doi request reprint Layer-by-layer films made from extracellular matrix macromolecules on silicone substrates
    Rami F Mhanna
    Institute for Biomedical Engineering, Laboratory of Biosensors and Bioelectronics, ETH Zurich, Switzerland
    Biomacromolecules 12:609-16. 2011
    ..The ability to construct stable ECM-based films on PDMS has particular relevance in mechanobiology, microfluidics, and other biomedical applications...
  21. doi request reprint Liposome and lipid bilayer arrays towards biosensing applications
    Marta Bally
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Zurich, 8092, Switzerland
    Small 6:2481-97. 2010
    ..This review illustrates the rapid pace by which advances are being made towards the creation of a heterogeneous biochip for the high-throughput screening of membrane proteins for diagnostics, drug screening, or drug discovery purposes...
  22. doi request reprint Effects of small pulsed nanocurrents on cell viability in vitro and in vivo: implications for biomedical electrodes
    Michael Gabi
    Laboratory of Biosensors and Bioelectronics, ETH Zurich, Zurich, Switzerland
    Biomaterials 31:8666-73. 2010
    ..These results indicate that applied currents can reduce the impedance of implanted electrodes...
  23. doi request reprint Single plasmonic nanoparticles for biosensing
    Takumi Sannomiya
    Laboratory of Biosensors and Bioelectronics, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    Trends Biotechnol 29:343-51. 2011
    ..In this review, recent achievements and perspectives of this emerging biosensing technique are discussed...
  24. doi request reprint Optical sensing and determination of complex reflection coefficients of plasmonic structures using transmission interferometric plasmonic sensor
    Takumi Sannomiya
    Department of Information Technology and Electrical Engineering, Laboratory of Biosensors and Bioelectronics, ETH Zurich, Zurich 8092, Switzerland
    Rev Sci Instrum 81:053102. 2010
    ....
  25. doi request reprint The resistance of polyelectrolyte multilayers in a free-hanging configuration
    Kaori Sugihara
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH 8092 Zurich, Switzerland
    J Phys Chem B 114:13982-7. 2010
    ..The significant discrepancy indicates the unexpectedly low electrical PEM resistance in the absence of redox-active ions and the sensitivity limitation in the conventional system...
  26. doi request reprint Electrically controlling cell adhesion, growth and migration
    Michael Gabi
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, University and ETH Zurich, ETZ F82, Gloriastrasse 35, CH 8092 Zurich, Switzerland
    Colloids Surf B Biointerfaces 79:365-71. 2010
    ....
  27. ncbi request reprint Bovine serum albumin adsorption onto colloidal Al2O3 particles: a new model based on zeta potential and UV-vis measurements
    Kurosch Rezwan
    Nonmetallic Inorganic Materials, Department of Materials, ETH Zurich, Wolfgang Pauli Strasse 10, 8093 Zurich
    Langmuir 20:10055-61. 2004
    ..On the basis of our observations we introduced a new adsorption model for BSA on Al2O3 particles...
  28. doi request reprint Electrochemical crystallization of plasmonic nanostructures
    Andreas B Dahlin
    Laboratory of Biosensors and Bioelectronics, Swiss Federal Institute of Technology Zürich, Switzerland
    Nano Lett 11:1337-43. 2011
    ..Observed spectral changes are in excellent agreement with analytical models and changes in electron relaxation time and plasma frequency are calculated...
  29. doi request reprint Chemically tunable electrochemical dissolution of noncontinuous polyelectrolyte assemblies: an in situ study using ecAFM
    Orane Guillaume-Gentil
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH and University Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
    ACS Appl Mater Interfaces 2:3525-31. 2010
    ....
  30. ncbi request reprint An aqueous-based surface modification of poly(dimethylsiloxane) with poly(ethylene glycol) to prevent biofouling
    Seunghwan Lee
    Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology, ETH Honggerberg
    Langmuir 21:11957-62. 2005
    ..The PEG/aqueous interface generated in this way revealed a near-perfect resistance to nonspecific protein adsorption as monitored by means of optical waveguide lightmode spectroscopy (OWLS) and fluorescence microscopy...
  31. doi request reprint G-protein coupled receptor array technologies: site directed immobilisation of liposomes containing the H1-histamine or M2-muscarinic receptors
    Kelly Bailey
    CSIRO Molecular and Health Technologies, Adelaide, SA, Australia
    Proteomics 9:2052-63. 2009
    ..Sequence specific immobilisation of such biologically important membrane proteins could lead to the development of a heterogeneous self-sorting liposome array of GPCRs which would underpin a variety of future novel applications...
  32. doi request reprint Shape-dependent sensitivity of single plasmonic nanoparticles for biosensing
    Takumi Sannomiya
    Swiss Federal Institute of Technology Zurich, Institute for Biomedical Engineering, Laboratory of Biosensors and Bioelectronics, Gloriastrasse 35, Zurich, 8092 Switzerland
    J Biomed Opt 14:064027. 2009
    ..The simulation of the corresponding particles with layered protein adsorption model showed consistent optical property and sensitivity, which were explained in terms of the field enhancement at the pointing edges...
  33. ncbi request reprint Strain mapping with optically coupled plasmonic particles embedded in a flexible substrate
    Takumi Sannomiya
    Department of Information Technology and Engineering, , , Switzerland
    Opt Lett 34:2009-11. 2009
    ..The strain vector map was constructed from the microscopy images with different polarizations at the strain-sensitive wavelength...
  34. ncbi request reprint Micropatterning of DNA-tagged vesicles
    Brigitte Städler
    BioInterfaceGroup, Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology ETH Zurich, CH 8093 Zurich, Switzerland
    Langmuir 20:11348-54. 2004
    ..Fluorescent microscopy images confirmed the possibility to create well-defined patterns of DNA-tagged, fluorescently labeled vesicles in the micrometer range...
  35. doi request reprint Formation of supported lipid bilayers on indium tin oxide for dynamically-patterned membrane-functionalized microelectrode arrays
    Karthik Kumar
    BioInterface Group, Laboratory of Surface Science and Technology, Swiss Federal Institute of Technology ETH, Zurich, CH 8093 Zurich, Switzerland
    Lab Chip 9:718-25. 2009
    ..This platform enables addressable assembly and the study of electrochemically mediated membrane processes in a microarray format which can be regenerated in situ...
  36. ncbi request reprint Systematic study of osteoblast response to nanotopography by means of nanoparticle-density gradients
    Tobias P Kunzler
    Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Wolfgang Pauli Strasse 10, 8093, Zurich, Switzerland
    Biomaterials 28:5000-6. 2007
    ..While cells spread well and developed a well-organized actin network in the absence of particles, spreading and formation of a strong actin network was considerably hindered at locations with maximum particle density...
  37. ncbi request reprint Light-induced in situ patterning of DNA-tagged biomolecules and nanoparticles
    Brigitte M Städler
    Dynamic BioInterfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, CH 8093 Zurich, Switzerland
    IEEE Trans Nanobioscience 5:215-9. 2006
    ....
  38. doi request reprint pH-controlled recovery of placenta-derived mesenchymal stem cell sheets
    Orane Guillaume-Gentil
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Switzerland
    Biomaterials 32:4376-84. 2011
    ..This novel polyelectrolyte multilayer based platform represents a promising, novel approach for the engineering of human stem cell sheets desired for future clinical applications...
  39. doi request reprint Mannose-based molecular patterns on stealth microspheres for receptor-specific targeting of human antigen-presenting cells
    Uta Wattendorf
    Institute for Pharmaceutical Sciences, ETH Zurich, 8093 Zurich, Switzerland
    Langmuir 24:11790-802. 2008
    ....
  40. ncbi request reprint Effects of ionic strength and surface charge on protein adsorption at PEGylated surfaces
    Stephanie Pasche
    BioInterfaceGroup, Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology ETH Zurich, CH 8093 Zurich, Switzerland
    J Phys Chem B 109:17545-52. 2005
    ..The combination of AFM surface force measurements and protein adsorption experiments provides insights into the interfacial forces associated with various PEGylated surfaces and the mechanisms of protein resistance...
  41. doi request reprint Swelling and contraction of ferrocyanide-containing polyelectrolyte multilayers upon application of an electric potential
    Dorothee Grieshaber
    ETH Zurich, Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, Gloriastrasse 35, CH 8092 Zurich, Switzerland
    Langmuir 24:13668-76. 2008
    ....
  42. doi request reprint A microwell array platform for picoliter membrane protein assays
    Andreas Binkert
    ETH Zurich, Institute for Biomedical Engineering, Laboratory of Biosensors and Bioelectronics, Zurich, Switzerland
    Small 5:1070-7. 2009
    ..Also, the dependence on the calcium concentration can be shown. Fluorescence readout of the assays is performed using a highly sensitive system based on a planar optical waveguide...
  43. pmc Exchangeable colloidal AFM probes for the quantification of irreversible and long-term interactions
    Pablo Dörig
    Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
    Biophys J 105:463-72. 2013
    ..The adhesion between cells and colloids was up to 60 nN, whereas individual cells adhered with 20 nN to the glass substrate. A cellular elastic modulus of 0.8 kPa was determined using the attached colloid as indenter...