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Oliver Groning - One of the best experts on this subject based on the ideXlab platform.

  • strain Relief Pattern as guide for the formation of surface supported bimolecular nanoribbons
    Applied Physics Letters, 2009
    Co-Authors: Kamel Aitmansour, Marta E Canasventura, Pascal Ruffieux, Rached Jaafar, Marco Bieri, Ralph Rieger, Klaus Mullen, Roman Fasel, Oliver Groning
    Abstract:

    We demonstrate the suitability of the Ag/Pt(111) strain-Relief Pattern as efficient template for controlling the formation of well defined heteromolecular nanostructures. Two different species of molecular building blocks with complementary end-group functionalities are combined on this surface, which results in the formation of robust bimolecular nanoribbons driven by the interplay of the site specific adsorption on the strain-Relief Pattern with the highly directional intermolecular hydrogen-bonding intrinsic to the free bimolecular system.

  • positional and orientational templating of c60 molecules on the ag pt 111 strain Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aitmansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Positional and Orientational Templating of C60 Molecules on the Ag/Pt(111) Strain-Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aït-mansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Mapping the electronic surface potential of nanostructured surfaces.
    Physical Review Letters, 2009
    Co-Authors: Pascal Ruffieux, Roman Fasel, P Groning, Kamel Aït-mansour, Azzedine Bendounan, Luc Patthey, Oliver Groning
    Abstract:

    : We present a method for the quantitative determination of the surface potential landscape of nanostructured surfaces based on the local analysis of the lowest field emission resonances by scanning tunneling spectroscopy. The method has a lateral resolution of approximately 1 nm and is applied to elucidate the site-specific adsorption properties of the strain Relief Pattern formed by two monolayers of Ag on Pt(111). For the example of C60 fullerenes, we show that the surface potential difference of up to 0.35 eV is responsible for the site-selective immobilization on the strain Relief Pattern.

Kamel Aitmansour - One of the best experts on this subject based on the ideXlab platform.

  • strain Relief Pattern as guide for the formation of surface supported bimolecular nanoribbons
    Applied Physics Letters, 2009
    Co-Authors: Kamel Aitmansour, Marta E Canasventura, Pascal Ruffieux, Rached Jaafar, Marco Bieri, Ralph Rieger, Klaus Mullen, Roman Fasel, Oliver Groning
    Abstract:

    We demonstrate the suitability of the Ag/Pt(111) strain-Relief Pattern as efficient template for controlling the formation of well defined heteromolecular nanostructures. Two different species of molecular building blocks with complementary end-group functionalities are combined on this surface, which results in the formation of robust bimolecular nanoribbons driven by the interplay of the site specific adsorption on the strain-Relief Pattern with the highly directional intermolecular hydrogen-bonding intrinsic to the free bimolecular system.

  • positional and orientational templating of c60 molecules on the ag pt 111 strain Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aitmansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

Roman Fasel - One of the best experts on this subject based on the ideXlab platform.

  • strain Relief Pattern as guide for the formation of surface supported bimolecular nanoribbons
    Applied Physics Letters, 2009
    Co-Authors: Kamel Aitmansour, Marta E Canasventura, Pascal Ruffieux, Rached Jaafar, Marco Bieri, Ralph Rieger, Klaus Mullen, Roman Fasel, Oliver Groning
    Abstract:

    We demonstrate the suitability of the Ag/Pt(111) strain-Relief Pattern as efficient template for controlling the formation of well defined heteromolecular nanostructures. Two different species of molecular building blocks with complementary end-group functionalities are combined on this surface, which results in the formation of robust bimolecular nanoribbons driven by the interplay of the site specific adsorption on the strain-Relief Pattern with the highly directional intermolecular hydrogen-bonding intrinsic to the free bimolecular system.

  • positional and orientational templating of c60 molecules on the ag pt 111 strain Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aitmansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Positional and Orientational Templating of C60 Molecules on the Ag/Pt(111) Strain-Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aït-mansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Mapping the electronic surface potential of nanostructured surfaces.
    Physical Review Letters, 2009
    Co-Authors: Pascal Ruffieux, Roman Fasel, P Groning, Kamel Aït-mansour, Azzedine Bendounan, Luc Patthey, Oliver Groning
    Abstract:

    : We present a method for the quantitative determination of the surface potential landscape of nanostructured surfaces based on the local analysis of the lowest field emission resonances by scanning tunneling spectroscopy. The method has a lateral resolution of approximately 1 nm and is applied to elucidate the site-specific adsorption properties of the strain Relief Pattern formed by two monolayers of Ag on Pt(111). For the example of C60 fullerenes, we show that the surface potential difference of up to 0.35 eV is responsible for the site-selective immobilization on the strain Relief Pattern.

Pascal Ruffieux - One of the best experts on this subject based on the ideXlab platform.

  • strain Relief Pattern as guide for the formation of surface supported bimolecular nanoribbons
    Applied Physics Letters, 2009
    Co-Authors: Kamel Aitmansour, Marta E Canasventura, Pascal Ruffieux, Rached Jaafar, Marco Bieri, Ralph Rieger, Klaus Mullen, Roman Fasel, Oliver Groning
    Abstract:

    We demonstrate the suitability of the Ag/Pt(111) strain-Relief Pattern as efficient template for controlling the formation of well defined heteromolecular nanostructures. Two different species of molecular building blocks with complementary end-group functionalities are combined on this surface, which results in the formation of robust bimolecular nanoribbons driven by the interplay of the site specific adsorption on the strain-Relief Pattern with the highly directional intermolecular hydrogen-bonding intrinsic to the free bimolecular system.

  • positional and orientational templating of c60 molecules on the ag pt 111 strain Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aitmansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Positional and Orientational Templating of C60 Molecules on the Ag/Pt(111) Strain-Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aït-mansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Mapping the electronic surface potential of nanostructured surfaces.
    Physical Review Letters, 2009
    Co-Authors: Pascal Ruffieux, Roman Fasel, P Groning, Kamel Aït-mansour, Azzedine Bendounan, Luc Patthey, Oliver Groning
    Abstract:

    : We present a method for the quantitative determination of the surface potential landscape of nanostructured surfaces based on the local analysis of the lowest field emission resonances by scanning tunneling spectroscopy. The method has a lateral resolution of approximately 1 nm and is applied to elucidate the site-specific adsorption properties of the strain Relief Pattern formed by two monolayers of Ag on Pt(111). For the example of C60 fullerenes, we show that the surface potential difference of up to 0.35 eV is responsible for the site-selective immobilization on the strain Relief Pattern.

P Groning - One of the best experts on this subject based on the ideXlab platform.

  • positional and orientational templating of c60 molecules on the ag pt 111 strain Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aitmansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Positional and Orientational Templating of C60 Molecules on the Ag/Pt(111) Strain-Relief Pattern
    Journal of Physical Chemistry C, 2009
    Co-Authors: Kamel Aït-mansour, Pascal Ruffieux, Roman Fasel, P Groning, Oliver Groning
    Abstract:

    We report on the site-specific nucleation of small C 60 molecular clusters on the strain-Relief Pattern formed by two monolayers of Ag on Pt(111) as well as on the orientational ordering within a molecular monolayer formed on this same template surface. Small triangular patches, which are characteristic of the strain-Relief Pattern, are found to be the most favorable sites for trapping single molecules. The reason for this site specificity seems to reside in a higher adsorption energy of the C 60 molecules in these patches. This is different from the previously reported case of metal (Ag) deposition where diffusion barriers and therefore kinetic reasons play the major role in the confinement of the metal adatoms in hexagonal patches of the strain-Relief Pattern, where they form nanoislands [Brune, H., et al. Nature 1998, 394, 451]. Here, for organic molecules, the small triangular patches are definitely the nucleation centers of two-dimensional islands covering the surface up to the full monolayer coverage. The particular pinning of the molecular monolayer in these patches imposes specific orientations for the molecules, whereas anywhere else on the surface the orientational order is strongly perturbed due to intrinsic irregularities of the strain-Relief Pattern.

  • Mapping the electronic surface potential of nanostructured surfaces.
    Physical Review Letters, 2009
    Co-Authors: Pascal Ruffieux, Roman Fasel, P Groning, Kamel Aït-mansour, Azzedine Bendounan, Luc Patthey, Oliver Groning
    Abstract:

    : We present a method for the quantitative determination of the surface potential landscape of nanostructured surfaces based on the local analysis of the lowest field emission resonances by scanning tunneling spectroscopy. The method has a lateral resolution of approximately 1 nm and is applied to elucidate the site-specific adsorption properties of the strain Relief Pattern formed by two monolayers of Ag on Pt(111). For the example of C60 fullerenes, we show that the surface potential difference of up to 0.35 eV is responsible for the site-selective immobilization on the strain Relief Pattern.