atomic force microscopy – Page 3

Nanophase Separated Anionic Amphiphilic Model Polymer Conetworks Based on Methacrylic acid

Kali G., Georgiou T.K., Iván B., Patrickios C.S., Loizou E., Thomann Y., Tiller J., Hungaryan Academy of Sciences, HU

Two series of model amphiphilic polymer conetworks were synthesized by group transfer polymerization (GTP). The first one was composed of the hydrophobic methyl methacrylate (MMA) and the hydrophilic methacrylic acid (MAA), and the second one [...]

Carbon nanostructures grown with electron and ion beam methods

Lemoine P., Roy S.S., Maguire P.D., McLaughlin J.A.D., University of Ulster, UK

Simultaneous deposition and patterning of carbon nanostructures can be performed using focused electron beams or ion beams. Although a variety of useful tri-dimensional structures have been prepared (single electron transistor, nanotools, AFM probes, etc.), the [...]

Nanogaps for fabrication of Molecular Devices

Kabir M.S., Enokson P., Chalmers University of Technology, SE

The development of different alternative technologies to fabricate various types of nanoscale devices based on non-conventional materials such as molecules and clusters are here reported. We had two different approaches to fabricate nangaps though there [...]

New Guidelines for Selecting Best Extraction Methods of EPS Using Atomic Force Microscopy

Kang S., Ahn Y., Choi H., Elimelech M., Yale University, US

In this study, we applied AFM to develop the guideline during the selection of best extraction methods for exocellular polymeric substances (EPS). A single cell of S. cerevisiae was glued at the end of the [...]

Comparative Study of Fabrication Patterns of a Ferroelectric Polymer P(VDF-TrFE) on Gold Thin Film and Gold Ball via Dip-pen Nanolithography

Tang Q., Shi S.Q., Zhou L.M., Xu C.H., The Hong Kong Polytechnic University, CN

An AFM-based nanolithography, dip-pen nanolithography is becoming a promising nanotechnology since its invention.However, there exists much uncertaintied in DPN process.Much research work are required to do in order to make it as a competitive nanolithography [...]

Integrated Optical Profiler and AFM: a 3D Metrology System for Nanotechnology

Jobin M., Du A., Foschia R., University of Applied Sciences, CH

A versatile 3D metrology tool for nanotechnology purpose has been built. It consist of an home-made white-light interferance microscope operating in the vertical scanning mode, integrated into a commercial Atomic Force Microscope. The performance in [...]

Enhancement of E6 Protein Binding on Binding-Orientation-Sensitive Mixed SAMs Molecules

Tseng F-G, Tseng Y.T., Hwang J.K., Hung S.W., Chang J.M., Huang H.M., Huang T.W., Tseng F-G, Tseng Y.T., Huang H.M., Huang T.W., Chieng C-C, National Tsing Hua University, TW

Orientation selectivity and binding enhancement with E6 protein are demonstrated by nano-structured mixed-SAMs systems of different chain lengths. Mixtures of n-alkinethiol SAMs of different chain lengths: 1-Decanethiol (C9) and 1-Hexanethiol (C5) are the examples in [...]

A Carbon Nanotube-Based Sensor for Measuring Forces Developed by Cells

Roman C., Ciontu F., Courtois B., Tima Laboratory, FR

We propose and validate through atomistic modeling and simulation a novel carbon nanotube-based sensor for measuring forces in the pico-Newton range, distributed over lengths ranging from nano-meters up to micro-meters. The mechanical behavior is modeled [...]

An Ultra-Fast Scheme for Sample-Detection in Dynamic-Mode Atomic Force Microscopy

Sahoo D.R., Sebastian A., Salapaka M.V., Iowa State University, US

In typical dynamic mode operation of atomic force microscopes steady state signals like amplitude and phase are used for detection and imaging of material. In these methods, high quality factor of the cantilever results in [...]

Visualizing Individual Rhodopsin (a G Protein-Coupled Receptor) Molecules in Native Disk and Reconstituted Membranes via Atomic Force Microscopy

Choi E.J., Jin A.J., Niu S-L, Smith P.D., Litman B.J., National Institutes of Health, US

Individual rhodopsin molecules have been resolved with atomic force microscopy as both monomers and various oligomeric organizations that are sensitively dependent upon the physical state of membranes and environmental conditions. In intact native disk membranes, [...]