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High Speed Atomic Force Microscopy Under The Microscope
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Book Synopsis High-speed Atomic Force Microscopy Under the Microscope by : Oliver David Payton
Download or read book High-speed Atomic Force Microscopy Under the Microscope written by Oliver David Payton and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: SINCE its invention in 1986, the atomic force microscope (AFM) has revolutionised the field of nanotechnology and nanoscience. It is a tool that has enabled research into areas of medicine, advanced materials, biology, chemistry and physics. However due to its low frame rate it is a tool that has been limited to imaging small areas using a time lapse technique. It has only been in recent years that the frame rate of the device has been increased in a tool known as high-speed AFM (HSAFM). This increased frame rate allows, for the first time, biological processes to be viewed in real time or macro sized areas to be imaged with nanoscale resolution. The research presented here concentrates on a specific type of high-speed AFM developed at the University of Bristol called contact mode HSAFM. This thesis explains how the microscope is able to function, and presents a leap in image quality due to an increased understanding of the dynamics of the system. The future of the device is also discussed. III.
Book Synopsis High-Speed Atomic Force Microscopy in Biology by : Toshio Ando
Download or read book High-Speed Atomic Force Microscopy in Biology written by Toshio Ando and published by Springer Nature. This book was released on 2022-03-23 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first book on high-speed atomic force microscopy (HS-AFM) is intended for students and biologists who want to use HS-AFM in their research. It provides straightforward explanations of the principle and techniques of AFM and HS-AFM. Numerous examples of HS-AFM studies on proteins demonstrate how to apply this new form of microscopy to specific biological problems. Several precautions for successful imaging and the preparation of cantilever tips and substrate surfaces will greatly benefit first-time users of HS-AFM. In turn, the instrumentation techniques detailed in Chapter 4 can be skipped, but will be useful for engineers and scientists who want to develop the next generation of high-speed scanning probe microscopes for biology. The book is intended to facilitate the first-time use of this new technique, and to inspire students and researchers to tackle their own specific biological problems by directly observing dynamic events occurring in the nanoscopic world. Microscopy in biology has recently entered a new era with the advent of high-speed atomic force microscopy (HS-AFM). Unlike optical microscopy, electron microscopy, and conventional slow AFM, it allows us to directly observe biological molecules in physiological environments. Molecular “movies” created using HS-AFM can directly reveal how molecules behave and operate, without the need for subsequent complex analyses and roundabout interpretations. It also allows us to directly monitor morphological change in live cells, and dynamic molecular events occurring on the surfaces of living bacteria and intracellular organelles. As HS-AFM instruments were recently commercialized, in the near future HS-AFM is expected to become a common tool in biology, and will enhance and accelerate our understanding of biological phenomena.
Book Synopsis Atomic Force Microscopy in Liquid by : Arturo M. Baró
Download or read book Atomic Force Microscopy in Liquid written by Arturo M. Baró and published by John Wiley & Sons. This book was released on 2012-08-01 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: About 40 % of current atomic force microscopy (AFM) research is performed in liquids, making liquid-based AFM a rapidly growing and important tool for the study of biological materials. This book focuses on the underlying principles and experimental aspects of AFM under liquid, with an easy-to-follow organization intended for new AFM scientists. The book also serves as an up-to-date review of new AFM techniques developed especially for biological samples. Aimed at physicists, materials scientists, biologists, analytical chemists, and medicinal chemists. An ideal reference book for libraries. From the contents: Part I: General Atomic Force Microscopy * AFM: Basic Concepts * Carbon Nanotube Tips in Atomic Force Microscopy with * Applications to Imaging in Liquid * Force Spectroscopy * Atomic Force Microscopy in Liquid * Fundamentals of AFM Cantilever Dynamics in Liquid * Environments * Single-Molecule Force Spectroscopy * High-Speed AFM for Observing Dynamic Processes in Liquid * Integration of AFM with Optical Microscopy Techniques Part II: Biological Applications * DNA and Protein-DNA Complexes * Single-Molecule Force Microscopy of Cellular Sensors * AFM-Based Single-Cell Force Spectroscopy * Nano-Surgical Manipulation of Living Cells with the AFM
Book Synopsis Encyclopedia of Biophysics by : Gordon Roberts
Download or read book Encyclopedia of Biophysics written by Gordon Roberts and published by Springer. This book was released on 2012-10-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Biophysics is envisioned both as an easily accessible source of information and as an introductory guide to the scientific literature. It includes entries describing both Techniques and Systems. In the Techniques entries, each of the wide range of methods which fall under the heading of Biophysics are explained in detail, together with the value and the limitations of the information each provides. Techniques covered range from diffraction (X-ray, electron and neutron) through a wide range of spectroscopic methods (X-ray, optical, EPR, NMR) to imaging (from electron microscopy to live cell imaging and MRI), as well as computational and simulation approaches. In the Systems entries, biophysical approaches to specific biological systems or problems – from protein and nucleic acid structure to membranes, ion channels and receptors – are described. These sections, which place emphasis on the integration of the different techniques, therefore provide an inroad into Biophysics from a biological more than from a technique-oriented physical/chemical perspective. Thus the Encyclopedia is intended to provide a resource both for biophysicists interested in methods beyond those used in their immediate sub-discipline and for those readers who are approaching biophysics from either a physical or biological background.
Book Synopsis Atomic Force Microscopy by : Peter Eaton
Download or read book Atomic Force Microscopy written by Peter Eaton and published by Oxford University Press. This book was released on 2010-03-25 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic force microscopes are very important tools for the advancement of science and technology. This book provides an introduction to the microscopes so that scientists and engineers can learn both how to use them, and what they can do.
Book Synopsis Atomic Force Microscopy in Nanobiology by : Kunio Takeyasu
Download or read book Atomic Force Microscopy in Nanobiology written by Kunio Takeyasu and published by CRC Press. This book was released on 2016-04-19 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in atomic force microscopy (AFM) have been accomplished through various technical and instrumental innovations, including high-resolution and recognition imaging technology under physiological conditions, fast-scanning AFM, and general methods for cantilever modification and force measurement. All these techniques are now highly
Book Synopsis Atomic Force Microscopy by : Pier Carlo Braga
Download or read book Atomic Force Microscopy written by Pier Carlo Braga and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The natural, biological, medical, and related sciences would not be what they are today without the microscope. After the introduction of the optical microscope, a second breakthrough in morphostructural surface analysis occurred in the 1940s with the development of the scanning electron microscope (SEM), which, instead of light (i. e. , photons) and glass lenses, uses electrons and electromagnetic lenses (magnetic coils). Optical and scanning (or transmission) electron microscopes are called “far-field microscopes” because of the long distance between the sample and the point at which the image is obtained in comparison with the wavelengths of the photons or electrons involved. In this case, the image is a diffraction pattern and its resolution is wavelength limited. In 1986, a completely new type of microscopy was proposed, which, without the use of lenses, photons, or electrons, directly explores the sample surface by means of mechanical scanning, thus opening up unexpected possibilities for the morphostructural and mechanical analysis of biological specimens. These new scanning probe microscopes are based on the concept of near-field microscopy, which overcomes the problem of the limited diffraction-related resolution inherent in conventional microscopes. Located in the immediate vicinity of the sample itself (usually within a few nanometers), the probe records the intensity, rather than the interference signal, thus significantly improving resolution. Since the most we- known microscopes of this type operate using atomic forces, they are frequently referred to as atomic force microscopes (AFMs).
Book Synopsis Atomic Force Microscopy For Biologists by : Patrick A Gunning
Download or read book Atomic Force Microscopy For Biologists written by Patrick A Gunning and published by World Scientific. This book was released on 1999-12-02 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic force microscopy (AFM) is part of a range of emerging microscopic methods for biologists which offer the magnification range of both the light and electron microscope, but allow imaging under the 'natural' conditions usually associated with the light microscope. To biologists AFM offers the prospect of high resolution images of biological material, images of molecules and their interactions even under physiological conditions, and the study of molecular processes in living systems. This book provides a realistic appreciation of the advantages and limitations of the technique and the present and future potential for improving the understanding of biological systems.
Book Synopsis On Advancement of High Speed Atomic Force Microscope Technology by : Kimberly E. SooHoo
Download or read book On Advancement of High Speed Atomic Force Microscope Technology written by Kimberly E. SooHoo and published by . This book was released on 2008 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: High speed atomic force microscopy (AFM) is a developing process in which nanoscale objects, such as crystal structures or strands of DNA, can be imaged at rates fast enough to watch processes as they occur. Although current generation AFM is already pivotal in many fields of research and industry, slow scan rates inhibit the imaging of dynamic samples. Much advancement has been made in high speed AFM thus far, yet many subsystems remain to be developed. This thesis outlines the development of a feedback controller for the AFM scanner, as well as the filters designed to attenuate high frequency noise. A comparison of the scan signals and scanner output signals are compared, with and without the controller and filters. Post-data acquisition image processing techniques are also described and compared with raw data. Finally, these techniques are applied to the high speed imaging of calcite etched with hydrochloric acid.
Book Synopsis Noncontact Atomic Force Microscopy by : S. Morita
Download or read book Noncontact Atomic Force Microscopy written by S. Morita and published by Springer Science & Business Media. This book was released on 2002-07-24 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1995, the noncontact atomic force microscope (NC-AFM) has achieved remarkable progress. Based on nanomechanical methods, the NC-AFM detects the weak attractive force between the tip of a cantilever and a sample surface. This method has the following characteristics: it has true atomic resolution; it can measure atomic force interactions, i.e. it can be used in so-called atomic force spectroscopy (AFS); it can also be used to study insulators; and it can measure mechanical responses such as elastic deformation. This is the first book that deals with all of the emerging NC-AFM issues.
Book Synopsis Atomic Force Microscopy by : Peter Eaton
Download or read book Atomic Force Microscopy written by Peter Eaton and published by OUP Oxford. This book was released on 2010-03-25 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic force microscopy (AFM) is an amazing technique that allies a versatile methodology (that allows measurement of samples in liquid, vacuum or air) to imaging with unprecedented resolution. But it goes one step further than conventional microscopic techniques; it allows us to make measurements of magnetic, electrical or mechanical properties of the widest possible range of samples, with nanometre resolution. This book will demystify AFM for the reader, making it easy to understand, and to use. It is written by authors who together have more than 30 years experience in the design, construction, and use of AFMs and will explain why the microscopes are made the way they are, how they should be used, what data they can produce, and what can be done with the data. Illustrative examples from the physical sciences, materials science, life sciences, nanotechnology and industry demonstrate the different capabilities of the technique.
Book Synopsis Atomic Force Microscopy/Scanning Tunneling Microscopy by : M.T. Bray
Download or read book Atomic Force Microscopy/Scanning Tunneling Microscopy written by M.T. Bray and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first U. S. Army Natick Research, Development and Engineering Center Atomic Force/Scanning Tunneling Microscopy (AFM/STM) Symposium was held on lune 8-10, 1993 in Natick, Massachusetts. This book represents the compilation of the papers presented at the meeting. The purpose ofthis symposium was to provide a forum where scientists from a number of diverse fields could interact with one another and exchange ideas. The various topics inc1uded application of AFM/STM in material sciences, polymers, physics, biology and biotechnology, along with recent developments inc1uding new probe microscopies and frontiers in this exciting area. The meeting's format was designed to encourage communication between members of the general scientific community and those individuals who are at the cutting edge of AFM, STM and other probe microscopies. It immediately became clear that this conference enabled interdisciplinary interactions among researchers from academia, industry and government, and set the tone for future collaborations. Expert scientists from diverse scientific areas including physics, chemistry, biology, materials science and electronics were invited to participate in the symposium. The agenda of the meeting was divided into three major sessions. In the first session, Biological Nanostructure, topics ranged from AFM ofDNA to STM imagmg ofthe biomoleeule tubulin and bacterialluciferase to the AFM of starch polymer double helices to AFM imaging of food surfaces.
Book Synopsis Correlative Imaging by : Paul Verkade
Download or read book Correlative Imaging written by Paul Verkade and published by John Wiley & Sons. This book was released on 2019-11-04 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brings a fresh point of view to the current state of correlative imaging and the future of the field This book provides contributions from international experts on correlative imaging, describing their vision of future developments in the field based on where it is today. Starting with a brief historical overview of how the field evolved, it presents the latest developments in microscopy that facilitate the correlative workflow. It also discusses the need for an ideal correlative probe, applications in proteomic and elemental analysis, interpretation methods, and how correlative imaging can incorporate force microscopy, soft x-ray tomography, and volume electron microscopy techniques. Work on placing individual molecules within cells is also featured. Correlative Imaging: Focusing on the Future offers in-depth chapters on: correlative imaging from an LM perspective; the importance of sample processing for correlative imaging; correlative light and volume EM; correlation with scanning probe microscopies; and integrated microscopy. It looks at: cryo-correlative microscopy; correlative cryo soft X-ray imaging; and array tomography. Hydrated-state correlative imaging in vacuo, correlating data from different imaging modalities, and big data in correlative imaging are also considered. Brings a fresh view to one of the hottest topics within the imaging community: the correlative imaging field Discusses current research and offers expert thoughts on the field’s future developments Presented by internationally-recognized editors and contributors with extensive experience in research and applications Of interest to scientists working in the fields of imaging, structural biology, cell biology, developmental biology, neurobiology, cancer biology, infection and immunity, biomaterials and biomedicine Part of the Wiley–Royal Microscopical Society series Correlative Imaging: Focusing on the Future will appeal to those working in the expanding field of the biosciences, correlative microscopy and related microscopic areas. It will also benefit graduate students working in microscopy, as well as anyone working in the microscopy imaging field in biomedical research.
Book Synopsis Atomic Force Microscopy in Molecular and Cell Biology by : Jiye Cai
Download or read book Atomic Force Microscopy in Molecular and Cell Biology written by Jiye Cai and published by Springer. This book was released on 2018-11-03 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses new achievements in AFM instruments – e.g. higher speed and higher resolution – and how AFM is being combined with other new methods like NSOM, STED, STORM, PALM, and Raman. This book explores the latest advances in atomic force microscopy and related techniques in molecular and cell biology. Atomic force microscopy (AFM) can be used to detect the superstructures of the cell membrane, cell morphology, cell skeletons and their mechanical properties. Opening up new fields of in-situ dynamic study for living cells, enzymatic reactions, fibril growth and biomedical research, these combined techniques will yield valuable new insights into molecule and cell biology. This book offers a valuable resource for students and researchers in the fields of biochemistry, cell research and chemistry etc.
Book Synopsis Atomic Force Microscopy by : Armand Vance
Download or read book Atomic Force Microscopy written by Armand Vance and published by . This book was released on 2016-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atomic force microscope (AFM) is one kind of scanning probe microscopes (SPM). SPMs are designed to measure local properties, such as height, friction, magnetism, with a probe. To acquire an image, the SPM raster-scans the probe over a small area of the sample, measuring the local property simultaneously. The information is gathered by "feeling" or "touching" the surface with a mechanical probe. Piezoelectric elements that facilitate tiny but accurate and precise movements on (electronic) command enable very precise scanning. Compared to competitive technologies such as optical microscopy and electron microscopy, the major difference between these and the atomic-force microscope is that the latter does not use lenses or beam irradiation. Therefore, it does not suffer from a limitation of space resolution due to diffraction limit and aberration, and it is not necessary to prepare a space for guiding the beam (by creating a vacuum) or to stain the sample. Piezo-ceramics position the tip with high resolution. Piezoelectric ceramics are a class of materials that expand or contract when in the presence of a voltage gradient. Piezo-ceramics make it possible to create three-dimensional positioning devices of arbitrarily high precision. In contact mode, AFMs use feedback to regulate the force on the sample. The AFM not only measures the force on the sample but also regulates it, allowing acquisition of images at very low forces. The feedback loop consists of the tube scanner that controls the height of the tip; the cantilever and optical lever, which measures the local height of the sample; and a feedback circuit that attempts to keep the cantilever deflection constant by adjusting the voltage applied to the scanner. The atomic force microscope is a powerful tool that is invaluable if to measure incredibly small samples with a great degree of accuracy. Unlike rival technologies it does not require either a vacuum or the sample to undergo treatment that might damage it. At the limits of operation however, researchers have demonstrated atomic resolution in high vacuum and even liquid environments. The book entitled Atomic Force Microscopy covers the applications and theories of atomic force microscope.
Book Synopsis Atomic Force Microscopy/Scanning Tunneling Microscopy 2 by : Samuel H. Cohen
Download or read book Atomic Force Microscopy/Scanning Tunneling Microscopy 2 written by Samuel H. Cohen and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the compilation of papers presented at the second Atomic Force Microscopy/Scanning Tunneling Microscopy (AFM/STM) Symposium, held June 7 to 9, 1994, in Natick, Massachusetts, at Natick Research, Development and Engineering Center, now part ofU.S. Army Soldier Systems Command. As with the 1993 symposium, the 1994 symposium provided a forum where scientists with a common interest in AFM, STM, and other probe microscopies could interact with one another, exchange ideas and explore the possibilities for future collaborations and working relationships. In addition to the scheduled talks and poster sessions, there was an equipment exhibit featuring the newest state-of-the-art AFM/STM microscopes, other probe microscopes, imaging hardware and software, as well as the latest microscope-related and sample preparation accessories. These were all very favorably received by the meeting's attendees. Following opening remarks by Natick's Commander, Colonel Morris E. Price, Jr., and the Technical Director, Dr. Robert W. Lewis, the symposium began with the Keynote Address given by Dr. Michael F. Crommie from Boston University. The agenda was divided into four major sessions. The papers (and posters) presented at the symposium represented a broad spectrum of topics in atomic force microscopy, scanning tunneling microscopy, and other probe microscopies.
Book Synopsis Design and Control of High-speed and Large-range Atomic Force Microscope by : Iman Soltani Bozchalooi
Download or read book Design and Control of High-speed and Large-range Atomic Force Microscope written by Iman Soltani Bozchalooi and published by . This book was released on 2015 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the design, control and instrumentation of a novel atomic force microscope (AFM). This AFM is capable of high-speed imaging while maintaining large out-of-plane and lateral scan ranges. The primary contributions of this thesis include the design and implementation of a high-speed and large-range AFM; design, implementation and control of a multi-actuated nano-positioner; development of a general direct data-based control design scheme for redundantly actuated nano-positioners; design and implementation of a non-linear amplitude demodulation method for tapping mode imaging; and development of a parameter estimation methodology for piezo actuator hysteresis modeling and compensation. Atomic force microscopes can provide nano-scale resolution images of sample surface topography in air, vacuum or in liquid. This instrument operates by scanning a micro-mechanical probe on a sample. A measurement of the probe-sample interaction is used to control the AFM scanner and also form a 3D image of the sample surface topography. The mechanical nature and the serial-point-collection bases of operation of this instrument significantly limits its speed and constrains its application to the study of static samples. Unlocking the high-speed performance capability of AFM enables study of dynamic nano-scale processes and opens up the possibility of novel scientific discoveries. Improving the speed performance of AFM however, should not compromise imaging range so that the instrument can accommodate imaging experiments with diverse lateral and out-of-plane scan range requirements. In addition to high-speed and large-range performance, instrument flexibility and ease of use are very important. An AFM should allow samples of different sizes, and provide a simple platform for setting up the imaging experiment. In this work all the components of the AFM are designed to meet these specifications. A multi-actuated scanner is designed and built that is composed of five nano-positioners with different range and bandwidth characteristics. Through redundant actuation this nano-positioner is capable of operating at high speeds and over large lateral and out-of-plane scan ranges. A general data-based compensator design methodology for the control of redundantly actuated nano-positioners is developed. In the proposed approach the compensators are obtained directly from the measured scanner actuator response, without any intermediate modeling. This feature makes updating or tuning the associated parameters easier. The flexibility of AFM control is maintained by designing these compensators auxiliary to a PID control unit. It is shown that in this form, a PID controller suffices to meet the needs of high-speed atomic force microscopy. This approach to control design is also used in the thesis to retroactively enhance existing AFMs operating on both flexure-based scanners and piezo-tubes. To improve the positioning accuracy of the scanner we proposed a more accurate parameter estimation scheme for the Maxwell model of hysteresis extended to the full hysteresis loop. Finally, to enable operation of AFMs with probe arrays in tapping mode a non-linear demodulation method based on the Teager Energy Operator is designed and implemented in both analog and digital forms. The main advantage of this technique is simplicity, enabling implementation of hundreds of these operators in digital form on FPGAs (Field Programmable Gate Arrays) or in ASIC (Application-Specific Integrated Circuit) form on AFM probe arrays for parallel sensing. The developments of this thesis form the bases for the design and implementation of a novel AFM. The implemented instrument is capable of high-speed imaging and simultaneously achieves 6 [mu]m out-of-plane and 120 [mu]m lateral scan ranges making it the largest range high-speed AFM reported to this date. This instrument also features a modular design with a laser spot size of 3.5 [mu]m compatible with small cantilevers, an optical view of the sample and probe for site selection and laser adjustment, a conveniently large (15 mm) waterproof sample stage that accommodates samples with various sizes and a data logging and plotting system with 20 MHz throughput for high resolution image acquisition at high imaging speeds. The designed AFM is used to visualize etching of calcite in a solution of sulfuric acid. Layer-by-layer dissolution along the crystalline lines in a low pH environment is observed in real time and the corresponding dissolution rate is estimated. The designed AFM is also used to visualize in real time the nucleation, growth and striping of copper on gold for the first time.
