Publications by Santiago Harald Andany

A hermetically closed sample chamber enables time-lapse nano-characterization of pathogenic microorganisms in vitro

Georg Fantner, John McKinney, Navid Asmari Saadabad, Santiago Harald Andany

Pathogenic microorganisms, such as pathogenic mycobacteria, pose a global health burden. Studying these organisms is crucial for gaining detailed knowledge about the pathogens and the diseases they cause. To handle pathogenic organisms, specific biosafety ...

ROYAL SOC CHEMISTRY2025

Enhanced feedback performance in off-resonance AFM modes through pulse train sampling

Georg Fantner, Marcos Penedo Garcia, Navid Asmari Saadabad, Santiago Harald Andany, Mustafa Kangül

Dynamic atomic force microscopy (AFM) modes that operate at frequencies far away from the resonance frequency of the cantilever (off-resonance tapping (ORT) modes) can provide high-resolution imaging of a wide range of sample types, including biological sa ...

Beilstein-Institut2024

Advances in High-Speed, Multiparametric Atomic Force Microscopy

Santiago Harald Andany

After decades of technological advancements, high-speed atomic force microscopy (HS-AFM) has emerged as a powerful technique for visualizing dynamic processes. At the nanoscale, the AFM provides valuable insights into the sample by sensing minute interacti ...

EPFL2024

High-Speed Atomic Force Microscopy Imaging of DNA Three-Point-Star Motif Self Assembly Using Photothermal Off-Resonance Tapping

Georg Fantner, Maartje Martina Cornelia Bastings, Bahareh Ghadiani, Marcos Penedo Garcia, Santiago Harald Andany, Cem Tekin, Mustafa Kangül, Veronika Cencen

High-speed atomic force microscopy (HS-AFM) is a popular molecular imaging technique for visualizing single-molecule biological processes in real-time due to its ability to image under physiological conditions in liquid environments. The photothermal off-r ...

Journal Of Visualized Experiments2024

A polymer-semiconductor-ceramic cantilever for high-sensitivity fluidcompatible microelectromechanical systems

Dirk Grundler, Georg Fantner, Nahid Hosseini, Marcos Penedo Garcia, Oliver Peric, Santiago Harald Andany, Matthias Neuenschwander

Active microelectromechanical systems (MEMS) with integrated electronic sensing and actuation can provide fast and sensitive measurements of force, acceleration and biological analytes. Strain sensors integrated onto MEMS cantilevers are widely used to tra ...

Springer Science and Business Media LLC2024

A high-bandwidth voltage amplifier for driving piezoelectric actuators in high-speed atomic force microscopy

Georg Fantner, Adrian Pascal Nievergelt, Santiago Harald Andany, Mustafa Kangül

High-speed atomic force microscopy (HS-AFM) is a technique capable of revealing the dynamics of biomolecules and living organisms at the nanoscale with a remarkable temporal resolution. The phase delay in the feedback loop dictates the achievable speed of ...

AIP Publishing2023

Data-Driven Feedforward Hysteresis Compensation with Genetic Algorithm for Atomic Force Microscope

Alireza Karimi, Georg Fantner, Navid Asmari Saadabad, Santiago Harald Andany, Mustafa Kangül

Nonlinear dynamics of piezo actuators such as hysteresis, distort the Atomic Force Microscopy (AFM) images as they adversely affect the accuracy of the nano-positioning setup. To compensate for the effects of hysteresis on lateral scanner actuators of AFM, ...

IEEE2022

Kinetic and structural roles for the surface in guiding SAS-6 self-assembly to direct centriole architecture

Pierre Gönczy, Georg Fantner, Georgios Hatzopoulos, Adrian Pascal Nievergelt, Niccolo Banterle, Santiago Harald Andany, Charlène Cécile Geneviève Brillard

Discovering mechanisms governing organelle assembly is a fundamental pursuit in biology. The centriole is an evolutionarily conserved organelle with a signature 9-fold symmetrical chiral arrangement of microtubules imparted onto the cilium it templates. Th ...

Nature Portfolio2021

Self-Actuated Polymer-Based Cantilevers With Sharp Silicon Tips For High-Speed Atomic Force Microscopy

Georg Fantner, Nahid Hosseini, Santiago Harald Andany, Matthias Neuenschwander

High-speed atomic force microscopy has thus far largely been limited to the use of small cantilevers in liquid, but the technique would greatly profit areas of nanotechnology that require the use of larger probes in air. We present polymer-based cantilever ...

IEEE2021

Tuning SAS-6 architecture with monobodies impairs distinct steps of centriole assembly

Pierre Gönczy, Georg Fantner, Georgios Hatzopoulos, Tatiana Favez, Oliver Hantschel, Virginie Hamel, Niccolo Banterle, Santiago Harald Andany

Centrioles are evolutionarily conserved multi-protein organelles essential for forming cilia and centrosomes. Centriole biogenesis begins with self-assembly of SAS-6 proteins into 9-fold symmetrical ring polymers, which then stack into a cartwheel that sca ...

Nature Research2021