The combination of atomic force microscopy with ultrasonic methods allows the nearfield detection of acoustic signals. The nondestructive characterization and nanoscale quantitative mapping of surface adhesion and stiffness or friction is possible. The aim of this book is to provide a comprehensive review of different scanning probe acoustic techniques, including AFAM, UAFM, SNFUH, UFM, SMM and torsional tapping modes. Basic theoretical explanations are given to understand not only the probe dynamics but also the dynamics of tip surface contacts. Calibration and enhancement are discussed to better define the performance of the techniques, which are also compared with other classical techniques such as nanoindentation or surface acoustic wave. Different application fields are described, including biological surfaces, polymers and thin films.

The volumes XI, XII and XIII examine the physical and technical foundation for recent progress in applied scanning probe techniques. These volumes constitute a timely comprehensive overview of SPM applications. Real industrial applications are included.

This is the second volume of Advances in Acoustic Microscopy. It continues the aim of presenting applications and developments of techniques that are related to high-resolution acoustic imaging. We are very grateful to the authors who have devoted considerable time to preparing these chapters, each of which describes a field of growing importance. Laboratories that have high-performance acoustic microscopes are frequently asked to examine samples for which the highest available resolution is not necessary, and the ability to penetrate opaque layers is more significant. Such applications can be thought of as bridging the gap be tween acoustic microscopy at low gigahertz frequencies, and on the one hand nondestructive testing of materials at low megahertz frequencies and on the other hand medical ultrasonic imaging at low megahertz frequencies. Commercial acoustic microscopes are becoming increasingly available and popular for such applications. We are therefore delighted to be able to begin the volume with chapters from each of those two fields. The first chapter, by Gabriele Pfannschmidt, describes uses of acoustic microscopy in the semiconductor industry. It provides a splendid balance to the opening chapter of Volume 1, which came from a national research center, being written from within a major European electronics industry itself. Dr Pfann schmidt describes the use of two quite different types of acoustic microscopes, and points out the advantages of each for specific purposes.

For many years Acoustic Microscopy has been the definitive book on the subject. A key development since it was first published has been the development of ultrasonic force microscopy. The 2nd edition has a major new chapter on this technique and its applications.

The Nobel Prize of 1986 on Sc- ningTunnelingMicroscopysignaled a new era in imaging. The sc- ning probes emerged as a new - strument for imaging with a p- cision suf?cient to delineate single atoms. At ?rst there were two – the Scanning Tunneling Microscope, or STM, and the Atomic Force Mic- scope, or AFM. The STM relies on electrons tunneling between tip and sample whereas the AFM depends on the force acting on the tip when it was placed near the sample. These were quickly followed by the M- netic Force Microscope, MFM, and the Electrostatic Force Microscope, EFM. The MFM will image a single magnetic bit with features as small as 10nm. With the EFM one can monitor the charge of a single electron. Prof. Paul Hansma at Santa Barbara opened the door even wider when he was able to image biological objects in aqueous environments. At this point the sluice gates were opened and a multitude of different instruments appeared. There are signi?cant differences between the Scanning Probe Microscopes or SPM, and others such as the Scanning Electron Microscope or SEM. The probe microscopes do not require preparation of the sample and they operate in ambient atmosphere, whereas, the SEM must operate in a vacuum environment and the sample must be cross-sectioned to expose the proper surface. However, the SEM can record 3D image and movies, features that are not available with the scanning probes.

A remote-sensing acoustic method for implementing position control feedback in Scanning Probe Microscopy (SPM) is presented. The capabilities of this feedback control using the new Whispering Gallery Acoustic Sensing (WGAS) method is demonstrated in a Shear-force Scanning Probe Microscope that uses a sharp probe attached to a piezoelectric Quartz Tuning Fork (QTF) firmly mounted on the microscope's frame. As the QTF is electrically driven its mechanical response reaches the SPM frame which then acts as a resonant cavity producing acoustic modes measured with an acoustic sensor strategically placed on the SPM head. The novelty of the WGAS resides in using an SPM frame with a perimeter closely matching the intervening acoustic wavelength to act as a resonant cavity. The whispering gallery cavity constitutes an acoustic amplifier for the mechanical motion of the QTF probe. The observed monotonic behavior of the whispering gallery acoustic signal as a function of the probe sample distance is exploited here for tip-sample distance control with nanometer sensitivity, thus allowing topographic characterization as the probe is scanned across the sample's surface. This thesis includes a description of a Labview based programming for the Field Programmable Gate Array (FPGA) card used in the automated control of the WGAS feedback microscope, a solution for improving the effective resolution of the Digital to Analog Converter (DAC) and initial results towards theoretically modeling the WGAS working principle.

Techniques of nanoscale functional imaging and spectroscopy have blossomed since the invention of scanning probe microscopy (SPM) tools, starting with scanning tunneling microscopy in the early 1980s. The ability to resolve topographical features with nanoscale—sometimes atomic—precision has revolutionized our understanding of molecules, matter, and living systems. These observations have led scientists to pose increasingly more complex questions about properties beyond morphology and their evolution upon external stimuli. Overall, SPM-based schemes provide versatile ways to probe structural, electrical, mechanical, and chemical properties of materials at the nanoscale. Getting started with SPM can be intimidating. This digital primer aims to provide undergraduate and graduate students majoring in various fields of science and engineering with a practical guide to grasp essential concepts and principles related to SPM image and spectra formation and their interpretation. This guide may also be helpful to researchers who are considering new ways of evaluating nanoscale properties of materials, devices, or living systems as applicable to their respective fields. Because of the extensive literature on the developments and applications of SPM, it was impossible to comprehensively cover all aspects of the field. Hence, deliberate choices were made to emphasize some techniques that have not been discussed as extensively in the literature but hold great promise to understand complex systems at the nanoscale.

This up-to-date handbook provides a lucid introduction to acoustic microscopes with submicron resolution. The first half of the handbook shows how to operate the instrument, offering a description of a typical acoustic microscope, some detailed guidance for use, and a helpful discussion of the elements of contrast theory. The second half examines samples of the images that can be obtained, including micrographs of composites, grain structure, layered devices, and fine microcracks. The author has designed the book to help both those who have recently purchased an acoustic microscope and those who merely wish to find out if an acoustic microscope can help their research, whether it be in materials science, metallurgy, surface physics, or surface chemistry.

Scanning tunneling microscopy has achieved remarkable progress and become the key technology for surface science. This book predicts the future development for all of scanning probe microscopy (SPM). Such forecasts may help to determine the course ultimately taken and may accelerate research and development on nanotechnology and nanoscience, as well as all in SPM-related fields in the future.

With the invention of the scanning tunneling microscope in 1982 by Binnig and Rohrer and the subsequent award of the Nobel Prize, the field of scan ning microscopy was given a strong boost in view of its wide range of ap plications. In particular, expanding the capability to access nature's foundations at the atomic level is now recognized as having the potential for major impact in Infonnation Technology. This third volume of the ESPRIT Basic Research Series provides a well structured overview of the state of the art of scanning microscopy and re cent advances including results of ESPRIT Basic Research Actions 3109 and 3314. April 1992 G. Metakides Preface The IMO Symposium Fall '90, Wetzlar, FRO, October 1/2, 1990, brought together leading scientists and researchers in scanning microscopy from re search institutes and industries, each of whom was invited to contribute a lecture which was followed by a discussion. The resulting contributions are contained in this proceedings. Microscopic techniques are used not only for research work in material and life science but also for routine applications in almost any vital section of our everyday life. The demand for coming to a better understanding of materials and their behaviour under different conditions and environments as well as all aspects of human life initiated an ongoing development for improved microscopic techniques.