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Books > Science & Mathematics > Science: general issues > Scientific equipment & techniques, laboratory equipment > Microscopy
Atomic Force Microscopy: Principles, Developments and Applications
presents Atomic Force Microscopy (AFM) as one of the most powerful
tools for the analysis of morphologies because it creates
three-dimensional images at the angstrom and nano scale. This
technique has been exhaustively used in the analyses of the
dispersion of nanometric components in nanocomposites and in
polymeric blends because of the easiness of the sample preparation
and lower equipment maintenance costs compared to the electron
microscopy. Contributions to different application areas using the
AFM are described, emphasizing the analysis of the morphology of
composites/nanocomposites and polymeric blends based on elastomeric
materials. Following this, the authors examine the basic concept of
DEP and its integration with AFM to generate DEP, as well as review
DEP-based AFM methods of imaging local electric polarizability with
nanoscale spatial resolution. The direct measurement of DEP
strength and polarity using a multi-pass AFM technique is
described, contributing to the optimization and calibration of DEP
integrated nano-devices for the effective control and manipulation
of target biomolecules. The combination of in situ AFM-study of
model crystals and ex situ-scanning of natural crystals makes it
possible to carry out a partial reconstruction of natural
crystallogenetics processes. With the use of these methods and
microtomography, the authors estimate the concentration of silica
in the mother solution at the time of capture of inclusions was
estimated for the first time. Next, a study is presented with the
goal of evaluating the morphology of surface asphalt films obtained
through spin coating and characterized by AFM. The samples were
pure asphalt and modified with two types of asphaltenes called
continental type and archipelago type. The asphaltene fractions in
the micellar system define the morphological stability of the
asphalt resulting from a contribution of all the existing forces
between the supramolecules of the system. The closing study
presents in situ AFM investigations of crystal dissolution. The
statistical data shows considerable differences in tangential
dissolution rate on the two spirals consisting of nine and four
screw dislocations.
With many chemicals once used to prepare and mount specimens on
slides now banned or deemed toxic, the enthusiast microscopist
requires accress to easy-to-source mixes and chemicals to mount
their own slides. This work by Walter Dioni provides a perfect
solution.
Atomic force microscopy 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 illustrate the
different capabilities of the technique.
AN INTRODUCTION TO The Theory and Use of the Microscope BY C. R.
MARSHALL, M. A., M. D., LL. D. Professor of Materia Medico, and
Therapeutics in the University of Aberdeen. AND H. D. GRIFFITH, B.
A. Carnegie Teaching Fellow in Natural Philosophy in the University
of Aberdeen. WITH TWENTY-NINE FIGURES IN THE TEXT AND THREE PLATES
LONDON GEORGE ROUTLEDGE SONS, LTD. BROADWAY HOUSE 68-74 CARTER
LANE, E. G. PRINTED IN GREAT BRITUN BY W. JOLLY AND SONS, LTD.,
ABERDEEN. FOREWORD. THE inspiration of this brochure was the
institution of lectures and practical work on Microscopy as part of
the class of Medical Physics in the University of Aberdeen. It was
felt that a small textbook covering the work of the systematic
lectures would be helpful . to the student and might aid him to
realize the capabilities, limitations and proper method of use of
the instrument. A chapter on the elementary mathematical treat ment
of certain problems discussed in the text has been added. It is
hoped that the work will prove of value to all students who require
a microscope in their studies as well as to those amateur
microscopists who wish to understand the fundamental principles on
which Microscopy is based. C. R. M. H. D. G. January, 1928.
CONTENTS. PAGE. INTRODUCTION i 10 The Simple Convex Lens Formation
of the Image The Influence of the Eye Visibility of Objects The
Simple Microscope The Compound Microscope. THE LENSES OF THE
MICROSCOPE . . . n 32 Chromatic Aberration Spherical Aberration.
OBJECTIVES. Achromatic, Semi-apochromatic, Apochromatic Focal
Length Numerical Aperture Depth of Focus Working Distance Flatness
of Field. EYEPIECES. Huyghenian Positive-Ramsden Disc Magnifying
Power. CONDENSERS. AbbeAchromatic - Critical Illumination Focal
Length Dark Ground Condensers Ultra Microscopy. RESOLUTION 33 36
Limit of Microscopic Vision Ultra-Violet Microscopy Abbes
Diffraction Theory. THE STAND 37 44 The Foot The Stage The Substage
The Body The Nose Piece The Limb Choice of Stand Choice of
Objectives Choice of Eyepieces Testing Objectives. ILLUMINANTS 45
49 Illumination of Transparent Objects Dark Ground Effects Oblique
Illumination Illu ination of Opaque Objects, vili. CONTENTS
ADJUSTMENT 50 56 Adjustment of Mirror Focusing of Condenser
Centering of Condenser Adjustment of Iris Diaphragm Adjustment of
Tube Length Changing Objectives Changing Eyepieces Care of the
Microscope., MlCROMETRY 57 62 Stage and Eyepiece Micrometers
Photo-Micrography Measurement of Magnification Drawing Eyepieces
Measurement of Thick ness. SPECTROSCOPY . ... 6364 SPECIAL
MICROSCOPES ...... 65 72 The Metallurgical Microscope The Petro
logical Microscope. Binocular Microscopes Greenough Wenham,
Compound Prism Abbes Stereoscopic Eye piece Binocular Vision
Binocular Rivalry. PHYSICAL PROOFS 73 84 Magnification Numerical
Aperture Depth of Focus Ramsden Circle Chromatic Correction Sine
Condition and Aplanatism Resolution. INDEX, 85 90 PLATES to face
pp. 6, 28, 36 AN INTRODUCTION TO THE THEORY AND USE OF THE
MICROSCOPE. THE function of the microscope is to reveal detail of
the structure of objects too small to be visible to the unaided
eye. This end is attained by the use of a series of lenses which
make the object appear magnified to the observer. The magnification
to be of value must extend to the finest detail of the object and
each successive stage of magnification should reveal structure
invisible without its aid.So-called c resolution J of detail in an
object does not of necessity result from mere optical
magnification. Magnification is necessary to attain it, but other
factors are involved. It is the aim of this brochure to explain the
principles of microscopy and the manipulations by which resolution
is obtained. For these purposes it is essential to consider first
certain properties of the simple convex lens, and some of the
conditions governing the visibility of objects. THE SIMPLE CONVEX
LENS...
In 1987, Barry Lynes wrote the classic book on Rife history called
The Cancer Cure That Worked. Rife's World of Electromedicine is the
sequel, published in 2009. What is the difference between the two
books? The Cancer Cure That Worked was primarily a biographical
account of Royal Raymond Rife's life and work, including detailed,
dated records of the events which occurred, and in-depth accounts
from the people involved. Rife's World of Electromedicine, on the
other hand, is a bird's eye view, short summary of the same time
period and events. Instead of a detailed biography, Rife's World is
an expository piece that includes brief, targeted chapters
addressing each aspect of Rife's era, utilizing piercing, specific,
and direct quotes and excerpts from historical documents including
magazine and newspaper articles, court transcripts, Rife's own
statements, and the eye-witness accounts of those who were present
during Rife's lifelong achievements. Written as a short story,
Rife's World is affordably priced so that everyone can read about
Royal Raymond Rife. The book is a perfect gift for someone who
wants to find out more about Rife but doesn't have time to read a
longer book. Additionally, the new book explains what 20] years of
additional research and document retrieval by a dedicated grass
roots group have discovered and unearthed. Some of the previously
missing, key factors in the suppressed and censored cure for cancer
were lost or even locked away in physicians' closets for decades in
order to prevent censors from destroying overwhelming evidence.
Now, this evidence is printed for the first time in Rife's World.
This book provides a comprehensive account of the theory of image
formation in a confocal fluorescence microscope as well as a
practical guideline to the operation of the instrument, its
limitations, and the interpretation of confocal microscopy data.
The appendices provide a quick reference to optical theory,
microscopy-related formulas and definitions, and Fourier theory.
Biomedical scientists are the foundation of modern healthcare, from
cancer screening to diagnosing HIV, from blood transfusion for
surgery to food poisoning and infection control. Without biomedical
scientists the diagnosis of disease, the evaluation of the
effectiveness of treatment, and research into the causes and cures
of disease would not be possible. The Fundamentals of Biomedical
Science series has been written to reflect the challenges of
practicing biomedical science today. It draws together essential
basic science with insights into laboratory practice to show how an
understanding of the biology of disease is coupled to the
analytical approaches that lead to diagnosis. Assuming only a
minimum of prior knowledge, the series reviews the full range of
disciplines to which a Biomedical Scientist may be exposed-from
microbiology to cytopathology to transfusion science.
Histopathology describes the processes and practices that are
central to the role of the histopathology biomedical scientist,
from presampling to diagnosis to laboratory management. It
demonstrates throughout how an understanding of cell and tissue
physiology is vital to the successful identification of clinical
conditions.
Distributed feedback (DFB) semiconductor lasers emit light in a
single mode which is essential to providing the carrier in long
haul high bit-rate optical communication systems. This
comprehensive research monograph provides: thorough analysis of the
operation and design of DFB lasers a high level of tutorial
discussion with many valuable appendices the first full account of
time-domain numerical modelling techniques applicable to future
optical systems as well as present devices Web access to a suite of
MATLAB programs (student version MATLAB 4 or higher). It is
essential reading for those studying optical communications at
graduate and advanced under-graduate level, and a key book for
industrial designers of opto-electronic devices.
Microscopy is a dynamic area of science, incorporating both basic
classroom microscopes and sophisticated research style instruments
that can be driven by light, electrons, or X-rays. The rate of
advance in the area over the last 50 years has led to a number of
technological advances. In this Very Short Introduction Terence
Allen, an established expert on microscope techniques, describes
the scientific principles behind the main forms of microscopy, and
the exciting new developments in the field. Focusing on the main
underlying principles, and introducing the power of what is
achievable today using microscopes, Allen demonstrates how
microscopy impinges on almost every aspect of our daily lives; from
medical diagnosis to quality control in manufacture. Beginning with
a brief history of the early stages of microscopy development,
Allen then concludes with a comprehensive account of the diverse
spectrum of microscopy available today. ABOUT THE SERIES: The Very
Short Introductions series from Oxford University Press contains
hundreds of titles in almost every subject area. These pocket-sized
books are the perfect way to get ahead in a new subject quickly.
Our expert authors combine facts, analysis, perspective, new ideas,
and enthusiasm to make interesting and challenging topics highly
readable.
This book deals with the subject of secondary energy spectroscopy
in the scanning electron microscope (SEM). The SEM is a widely used
research instrument for scientific and engineering research and its
low energy scattered electrons, known as secondary electrons, are
used mainly for the purpose of nanoscale topographic imaging. This
book demonstrates the advantages of carrying out precision electron
energy spectroscopy of its secondary electrons, in addition to them
being used for imaging. The book will demonstrate how secondary
electron energy spectroscopy can transform the SEM into a powerful
analytical tool that can map valuable material science information
to the nanoscale, superimposing it onto the instrument's normal
topographic mode imaging. The book demonstrates how the SEM can
then be used to quantify/identify materials, acquire bulk density
of states information, capture dopant density distributions in
semiconductor specimens, and map surface charge distributions.
Due to its nondestructive imaging power, scanning tunneling
microscopy has found major applications in the fields of physics,
chemistry, engineering, and materials science. This book provides a
comprehensive treatment of scanning tunneling and atomic force
microscopy, with full coverage of the imaging mechanism,
instrumentation, and sample applications. The work is the first
single-author reference on STM and presents much valuable
information previously available only as proceedings or collections
of review articles. It contains a 32-page section of remarkable STM
images, and is organized as a self-contained work, with all
mathematical derivations fully detailed. As a source of background
material and current data, the book will be an invaluable resource
for all scientists, engineers, and technicians using the imaging
abilities of STM and AFM. It may also be used as a textbook in
senior-year and graduate level STM courses, and as a supplementary
text in surface science, solid-state physics, materials science,
microscopy, and quantum mechanics.
Allgemeine Informationen, - Datenverwaltung mit Excel und SAS
Studio.- Datenmanagement mit Excel und SAS Studio.- Vorbemerkungen
und Informationen zur statistischen Analyse medizinischer Daten.-
Deskriptive Statistik.- Zusammenhang von Variablen.- Statistische
Tests fur unabhangige Beobachtungen.- Statistische Tests fur
abhangige Beobachtungen.- Einstichprobentests und
Konfidenzintervalle.- UEberlebenszeitanalyse.-
Fallzahlberechnungen.- Anhang.
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