Université de Neuchâtel

Nanofabrication of protein-patterned substrates for future cell adhesion experiments

Künzi, P.A. ; Lussi, J. ; Aeschimann, Laure ; Danuser, G. ; Textor, M. ; de Rooij, Nicolaas F. ; Staufer, Urs

In: Microelectronic Engineering, 2005, vol. 78-79, p. 582-586

A method for fabricating sub-micrometer size adhesion sites for future experiments in cell biology is presented. Glass substrates were coated with a thin layer of InSnO and SiO2. The SiO2 was structured by means of electron beam lithography and reactive ion etching, exposing sub-micrometer patches of the underlying InSnO. Dodecylphosphate, to which proteins can bind, was...

Université de Neuchâtel

Scanning probe arrays for life sciences and nanobiology applications

Aeschimann, Laure ; Meister, André ; Akiyama, Terunobu ; Chui, Benjamin W. ; Niedermann, Philippe ; Heinzelmann, Harry ; de Rooij, Nicolaas F. ; Staufer, Urs ; Vettiger, Peter

In: Microelectronic Engineering, 2006, vol. 83, no. 4-9, p. 1698-1701

Various 1D and 2D scanning probe arrays with integrated piezoresistive sensors have been developed in view of nanobiology and life science applications. For such applications, the experiments need usually to be performed under liquid conditions. The probe arrays have been fabricated by using silicon micromachining techniques and SOI wafers. For biological applications, when the cantilevers are...

Université de Neuchâtel

Concept and Demonstration of Individual Probe Actuation in Two-Dimensional Parallel Atomic Force Microscope System

Akiyama, Terunobu ; Aeschimann, Laure ; Chantada, Laura ; de Rooij, Nicolaas F. ; Heinzelmann, Harry ; Herzig, Hans-Peter ; Manzardo, Omar ; Meister, André ; Polesel-Maris, Jérôme ; Pugin, Raphaël ; Staufer, Urs ; Vettiger, Peter

In: Japanese Journal of Applied Physics, 2007, vol. 46, no. 9B, p. 6458-6462

A concept of an array actuator that is used to control the tip–sample separation of cantilevers in a two-dimensional (2D) probe array scanning system is proposed in this article. The feasibility of the concept is demonstrated with a 10×10 array actuator with 500 µm xy-pitches. The array actuator is made by slicing a bulk piezoceramic block. The obtained maximum actuation of a single...

Université de Neuchâtel

Optical properties of microfabricated fully-metal-coated near-field probes in collection mode

Descrovi, Emiliano ; Vaccaro, Luciana ; Aeschimann, Laure ; Nakagawa, Wataru ; Staufer, Urs ; Herzig, Hans-Peter

In: Journal of the Optical Society of America A, 2005, vol. 22, no. 7, p. 1432-1441

A study of the optical properties of microfabricated, fully-metal-coated quartz probes collecting longitudinal and transverse optical fields is presented. The measurements are performed by raster scanning the focal plane of an objective, focusing azimuthally and radially polarized beams by use of two metal-coated quartz probes with different metal coatings. A quantitative estimation of the...

Université de Neuchâtel

Apertureless Scanning near-Field Optical Microscope Probe for Transmission Mode Operation

Aeschimann, Laure ; Stauffer, Urs (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2004 ; 1765.

La résolution en microscopie classique est limitée par la diffraction de la lumière. Grâce à la microscopie optique en champ proche (SNOM), il est possible de dépasser cette barrière. De plus, cette technique permet d’obtenir conjointement à l’image optique, une image de la topographie de la surface de l’échantillon, de façon similaire à celle obtenue en microscopie à force...