Publications de Sivashankar Krishnamoorthy

The systematic tunability of nanoparticle dimensions through the controlled loading of surface-deposited diblock copolymer micelles

Jürgen Brugger, Harry Heinzelmann, Sivashankar Krishnamoorthy, Raphaël Pugin

The continuous tunability of iron oxide nanoparticle dimensions is demonstrated using the pH controlled loading of ferric nitrate from aqueous solution into polystyrene–block–polyacrylic acid reverse micelles deposited on a silicon substrate. Quasi-hexagon ...

2008

Tunable, high aspect ratio pillars on diverse substrates using copolymer micelle lithography: an interesting platform for applications

Jürgen Brugger, Cyrille Hibert, Sivashankar Krishnamoorthy

We demonstrate the use of copolymer micelle lithography using polystyrene-block-poly(2-vinylpyridine) reverse micelle thin films in their as-coated form to create nanopillars with tunable dimensions and spacing, on different substrates such as silicon, sil ...

2008

Nanopatterned Self-Assembled Monolayers by Using Diblock Copolymer Micelles as Nanometer-Scale Adsorption and Etch Masks

Jürgen Brugger, Harry Heinzelmann, Sivashankar Krishnamoorthy, Raphaël Pugin

Wiley2008

Combining micelle self-assembly with nanostencil lithography to create periodic/aperiodic micro- /nanopatterns on surfaces

Jürgen Brugger, Cyrille Hibert, Marc Antonius Friedrich van den Boogaart, Sivashankar Krishnamoorthy

Wiley2008

Tuning the Dimensions and Periodicities of Nanostructures Starting from the Same Polystyrene-block-poly(2-vinylpyridine) Diblock Copolymer

Jürgen Brugger, Harry Heinzelmann, Sivashankar Krishnamoorthy, Raphaël Pugin

The controlled tuning of the characteristic dimensions of two-dimensional arrays of block-copolymer reverse micelles deposited on silicon surfaces is demonstrated. The polymer used is polystyrene-block-poly(2-vinylpyridine) (91500-b-105000 g mol–1). Revers ...

2006

Block copolymer micelles as switchable templates for nanofabrication

Jürgen Brugger, Harry Heinzelmann, Sivashankar Krishnamoorthy, Raphaël Pugin

Block copolymer inverse micelles from polystyrene-block-poly-2-vinylpyridine (PS-b-P2VP) deposited as monolayer films onto surfaces show responsive behavior and are reversibly switchable between two states of different topography and surface chemistry. The ...

2006

Self-assembly of tunable, responsive polymer nanostructures : tools for nanofabrication of functional interfaces

Sivashankar Krishnamoorthy

The thesis presents a tool-box based on two dimensional self-assembly of diblock copolymer micelles to achieve nanostructures on surface with control over dimensions, spacing, surface-coverage and surface placement. Polystyrene-block-poly(2-vinyl pyridine) ...

EPFL2006