Publications de Jonathan David Adams

Integration of sharp silicon nitride tips into high-speed SU8 cantilevers in a batch fabrication process

Georg Fantner, Nahid Hosseini, Jonathan David Adams, Oliver Peric, Santiago Harald Andany, Matthias Neuenschwander

Employing polymer cantilevers has shown to outperform using their silicon or silicon nitride analogues concerning the imaging speed of atomic force microscopy (AFM) in tapping mode (intermittent contact mode with amplitude modulation) by up to one order of ...

Beilstein Institut2019

Microfluidic bacterial traps for simultaneous fluorescence and atomic force microscopy

Oliver Peric, Georg Fantner, Jonathan David Adams, Mélanie Thérèse Marie Hannebelle

The atomic force microscope has become an established research tool for imaging microorganisms with unprecedented resolution. However, its use in microbiology has been limited by the difficulty of proper bacterial immobilization. Here, we have developed a ...

2017

Components for high-speed atomic force microscopy optimized for low phase-lag

Georg Fantner, Adrian Pascal Nievergelt, Santiago Harald Andany, Jonathan David Adams, Mélanie Thérèse Marie Hannebelle

IEEE2017

Harnessing the damping properties of materials for high-speed atomic force microscopy

Jürgen Brugger, Georg Fantner, Adrian Pascal Nievergelt, Jonas Grossenbacher, Blake William Erickson, Jonathan David Adams

The success of high-speed atomic force microscopy in imaging molecular motors1, enzymes2 and microbes3 in liquid environments suggests that the technique could be of significant value in a variety of areas of nanotechnology. However, the majority of atomic ...

Nature Publishing Group2016

Method and apparatus of using a scanning probe microscope

Georg Fantner, Adrian Pascal Nievergelt, Jonathan David Adams

a scanning probe microscope for high-speed imaging and/or nanomechanical mapping. The microscope comprises a scanning probe comprising a cantilever with a tip at the distal end; and means for modulating a tip-sample distance separating the tip from an inte ...

2016

A monolithic MEMS position sensor for closed-loop high-speed atomic force microscopy

Georg Fantner, Nahid Hosseini, Adrian Pascal Nievergelt, Jonathan David Adams

The accuracy and repeatability of atomic force microscopy (AFM) imaging significantly depend on the accuracy of the piezoactuator. However, nonlinear properties of piezoactuators can distort the image, necessitating sensor-based closed-loop actuators to ac ...

2016

Multilayer mems cantilevers

Georg Fantner, Nahid Hosseini, Jonathan David Adams

The present invention relates to a cantilever or membrane comprising a body and an elongated beam attached to the body. The elongated beam includes a first layer comprising a first material, a second layer comprising a second material having an elastic mod ...

2016

Direct-write nanoscale printing of nanogranular tunnelling strain sensors for sub-micrometre cantilevers

Georg Fantner, Maja Dukic Pjanic, Jonathan David Adams

The sensitivity and detection speed of cantilever-based mechanical sensors increases drastically through size reduction. The need for such increased performance for high-speed nanocharacterization and bio-sensing, drives their sub-micrometre miniaturizatio ...

Nature Research2016

Piezoresistive AFM cantilevers surpassing standard optical beam deflection in low noise topography imaging

Georg Fantner, Jonathan David Adams, Maja Dukic Pjanic

Optical beam deflection (OBD) is the most prevalent method for measuring cantilever deflections in atomic force microscopy (AFM), mainly due to its excellent noise performance. In contrast, piezoresistive strain-sensing techniques provide benefits over OBD ...

Nature Publishing Group2015

Studying biological membranes with extended range high-speed atomic force microscopy

Georg Fantner, Nahid Hosseini, Adrian Pascal Nievergelt, Blake William Erickson, Jonathan David Adams

High-speed atomic force microscopy has proven to be a valuable tool for the study of biomolecular systems at the nanoscale. Expanding its application to larger biological specimens such as membranes or cells has, however, proven difficult, often requiring ...

Nature Publishing Group2015