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Feynman Lectures 50th anniversary celebration seminar series

Synthesis and applications of multifunctional nanomaterials

Speaker: Stanislaus Wong from State University of New York at Stony Brook

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Scanning probe microscopy

Sponsored by Bruker Nano Surfaces

Bruker’s Inspire™ delivers, for the first time, highest-resolution nanoscale chemical and property mapping combined with radical productivity advances and uncompromised AFM performance. The integrated, self-optimizing system acquires nanoscale infrared absorption and reflection maps at regular AFM imaging speeds, without the limitations of indirect mechanical approaches or added complexity for the user.

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Lab talk

Nanotechnology research highlights: find out what the authors have to say

Lissajous scan trajectories speed up scanning probe microscopy

Non-raster scan trajectories give a rapid preview of the entire sample area with a resolution that increases uniformly in time and space

Coaxial Kelvin probe sharpens work-function images

Shielded AFM probe enhances spatial resolution and helps to avoid topographical artifacts by confining the electric field to a region directly below the tip

Understanding nonvolatile memory phenomena in graphene-polymer devices

Embedded multilayer graphene film acts as charge trapping layer and changes the current state of the memory device in response to externally applied bias

Nanocomposite study explores link between macro- and nanoscale behaviour

AFM nanoindentation results compared with macroscale tensile testing data to correlate surface properties of cellulose nanocrystal-based composites with bulk performance

Scanning probe lithography: ultrasonic vibration assisted nanomachining with an AFM

Controlled ultrasonic tip-sample vibration increases patterning speed and allows tunable feature dimensions

Probing delicate samples: stiff AFM mechanics at soft forces

Higher-order resonances allow low-force nanomechanical characterization

Biocompatible plasmonic substrates assembled for single-molecule detection

Small clusters of anisotropic silver nanoparticles enveloped in a shell of chitosan biopolymer operate as highly active SERS substrates

Diffraction grating reduces noise of coated AFM cantilevers

Special coating pattern based on Fresnel lens reduces the impact of detection-, force- and displacement-noise in atomic force microscopy

DNA nanoswitch flips open with force

Harvard team engineers DNA-based tool for studying biomolecular interactions

ATP hydrolysis drives microcantilever bending

Nanomechanical response is dependent on the monolayer arrangement of ATPases at the cantilever surface

From single-atom magnetometry to tailor-made magnets

Knowledge of atomic-scale interactions in solids informs material design

Sub-pm deformations reveal ferroelectric domains

Improved understanding of piezoresponse force microscopy detection mechanism leads to quantitative analysis of data beyond simple mapping of domain patterns

New approach to scalable nano-patterning of graphene

Laser ablation-induced shock pressure method delivers nanoscale features in an easy, fast and scalable manner

Band excitation: a new approach for SPM operation

Full spectral technique enables unambiguous and cross-talk-free probing of local energy losses and dissipation

Vibrometer-based model enables accurate measurements in liquid with existing AFM hardware

Quantitative force and dissipation measurements at the solid-liquid interface performed using acoustic excitation thanks to whole cantilever analysis

AFM model evaluates true height of water layers

Study shows when water is being perturbed and distinguishes between four different interaction regimes

High-temperature sensing with quantum dots

Team examines behaviour of nanomaterials at elevated temperatures to inform the development of quantum-dot based optoelectronics

Metallized recombinant S-layer protein nanotubes prepared for nanobiotechnology applications

Conductive self-assembling bacterial surface layer tubes could help to reduce the size of electronic devices

Playing Lego bricks with nanostructures

Fast and easy nanoimprint stacking process transforms single layer negative index materials into 3D structures

Versatile nano-tensile testing platform available for TEM

Uni-axial testing tool allows evolution of internal sample structure to be observed in real time