Observation of CdSe Colloidal Nano-Dot Films by Scanning Probe Microscopy

2000 ◽  
Vol 642 ◽  
Author(s):  
Ichiro Tanaka ◽  
Eri Kawasaki ◽  
O. Ohtsuki ◽  
S. Saita ◽  
I. Kamiya
Keyword(s):  
Scanning Probe Microscopy ◽  
Oscillation Amplitude ◽  
Organic Matrix ◽  
Scanning Probe ◽  
Contact Mode ◽  
Force Microscopy ◽  
Atomic Force ◽  
Structure Changes ◽  
Fine Structures ◽  
Mode Atomic Force Microscopy

ABSTRACTWe observed the surface topography of CdSe colloidal nano-dot film by cyclic contact mode atomic force microscopy. The observed structure changes with cantilever oscillation amplitude, and non-uniform images with long-range corrugations are obtained with relatively large oscillation amplitude while fine structures are revealed with smaller oscillation amplitude. When the amplitude is larger and the surface is weakly ‘tapped’, the topography of the soft organic matrix of the film dominates, and when the tapping force is increased, the hard CdSe dots begin to reveal.

SCANNING PROBE MICROSCOPY BASED NANOSCALE PATTERNING AND FABRICATION

COSMOS ◽  
2007 ◽  
Vol 03 (01) ◽  
pp. 1-21 ◽  
Author(s):  
XIAN NING XIE ◽  
HONG JING CHUNG ◽  
ANDREW THYE SHEN WEE
Keyword(s):  
Integrated Circuits ◽  
Scanning Probe Microscopy ◽  
Scanning Probe ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Force Microscopy ◽  
Nanoscale Patterning ◽  
Atomic Force ◽  
Probe Microscope ◽  
Molecular Manipulation

Nanotechnology is vital to the fabrication of integrated circuits, memory devices, display units, biochips and biosensors. Scanning probe microscope (SPM) has emerged to be a unique tool for materials structuring and patterning with atomic and molecular resolution. SPM includes scanning tunneling microscopy (STM) and atomic force microscopy (AFM). In this chapter, we selectively discuss the atomic and molecular manipulation capabilities of STM nanolithography. As for AFM nanolithography, we focus on those nanopatterning techniques involving water and/or air when operated in ambient. The typical methods, mechanisms and applications of selected SPM nanolithographic techniques in nanoscale structuring and fabrication are reviewed.

Measurement of Plasticity Gradients with Scanning Probe Microscopy

1993 ◽  
Vol 318 ◽  
Author(s):  
James D. Kiely ◽  
Dawn A. Bonnell
Keyword(s):  
Fracture Surface ◽  
Scanning Probe Microscopy ◽  
Scanning Probe ◽  
Scanning Tunneling ◽  
Ceramic System ◽  
Force Microscopy ◽  
Metal Fracture ◽  
Atomic Force ◽  
Metal Ceramic

ABSTRACTScanning Tunneling and Atomic Force Microscopy were used to characterize the topography of fractured Au /sapphire interfaces. Variance analysis which quantifies surface morphology was developed and applied to the characterization of the metal fracture surface of the metal/ceramic system. Fracture surface features related to plasticity were quantified and correlated to the fracture energy and energy release rate.

Block Copolymer Microdomain Morphologies by Phase Detection Imaging

1996 ◽  
Vol 461 ◽  
Author(s):  
Ph. Leclère ◽  
J. M. Yu ◽  
R. Lazzaroni ◽  
Ph. Dubois ◽  
R. JéRôme ◽  
...  
Keyword(s):  
Scanning Probe Microscopy ◽  
Scanning Probe ◽  
Phase Detection ◽  
Surface Phase ◽  
Force Microscopy ◽  
Microscopy Technique ◽  
Atomic Force ◽  
Different Types ◽  
Microdomain Structure ◽  
Thermodynamic Processes

ABSTRACTAtomic Force Microscopy with Phase Detection Imaging is used to study the surface microdomain morphology of thick (i.e., ca. 2 mm) films of triblock copolymers, such as polymethylmethacrylate - block - polybutadiene - block - polymethylmethacrylate copolymers prepared by a well-taylored two-step sequential copolymerization promoted by a 1,3-diisopropenylbenzene based difunctional anionie initiator. By means of this new scanning probe microscopy technique, it is shown that the surface exhibits a segregated microphase structure, corresponding to the different types of components predicted theoretically by thermodynamic processes. We investigate the relationships between the size and characteristics of the microdomain structure as a function of the molecular parameters of the constituent polymers. Our data illustrate the interest of Phase Detection Imaging in the elucidation of surface phase separation in block copolymers.

Creep, Hysteresis, and Vibration Compensation for Piezoactuators: Atomic Force Microscopy Application

1999 ◽  
Vol 123 (1) ◽  
pp. 35-43 ◽  
Author(s):  
D. Croft ◽  
G. Shed ◽  
S. Devasia
Keyword(s):  
High Precision ◽  
Scanning Probe Microscopy ◽  
High Speed ◽  
Scanning Probe ◽  
Optical Systems ◽  
Positioning Precision ◽  
Force Microscopy ◽  
Atomic Force ◽  
Vibration Compensation ◽  
Adverse Affects

This article studies ultra-high-precision positioning with piezoactuators and illustrates the results with an example Scanning Probe Microscopy (SPM) application. Loss of positioning precision in piezoactuators occurs (1) due to hysteresis during long range applications, (2) due to creep effects when positioning is needed over extended periods of time, and (3) due to induced vibrations during high-speed positioning. This loss in precision restricts the use of piezoactuators in high-speed positioning applications like SPM-based nanofabrication, and ultra-high-precision optical systems. An integrated inversion-based approach is presented in this article to compensate for all three adverse affects—creep, hysteresis, and vibrations. The method is applied to an Atomic Force Microscope (AFM) and experimental results are presented that demonstrate substantial improvements in positioning precision and operating speed.

Developments in Using Scanning Probe Microscopy To Study Molecules on Surfaces — From Thin Films and Single-Molecule Conductivity to Drug–Living Cell Interactions

2006 ◽  
Vol 59 (6) ◽  
pp. 359 ◽  
Author(s):  
Pall Thordarson ◽  
Rob Atkin ◽  
Wouter H. J. Kalle ◽  
Gregory G. Warr ◽  
Filip Braet
Keyword(s):  
Single Molecule ◽  
Scanning Probe Microscopy ◽  
Cell Interactions ◽  
Scanning Probe ◽  
Probe Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Tunnelling Microscopy ◽  
Molecule Surface

Scanning probe microscopy (SPM) techniques, including atomic force microscopy (AFM) and scanning tunnelling microscopy (STM), have revolutionized our understanding of molecule–surface interactions. The high resolution and versatility of SPM techniques have helped elucidate the morphology of adsorbed surfactant layers, facilitated the study of electronically conductive single molecules and biomolecules connected to metal substrates, and allowed direct observation of real-time processes such as in situ DNA hybridization and drug–cell interactions. These examples illustrate the power that SPM possesses to study (bio)molecules on surfaces and will be discussed in depth in this review.

Vibrational Response of FeNi3Nanoparticles to the Flux of a Modulated Electromagnetic Field Detected by Contact-Mode Atomic Force Microscopy

2013 ◽  
Vol 117 (36) ◽  
pp. 18768-18776 ◽  
Author(s):  
Algernon T. Kelley ◽  
Wilson K. Serem ◽  
Stephanie L. Daniels ◽  
Lauren E. Englade-Franklin ◽  
Gregory Morrison ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Electromagnetic Field ◽  
Contact Mode ◽  
Force Microscopy ◽  
Vibrational Response ◽  
Atomic Force ◽  
Mode Atomic Force Microscopy
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