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Books > Science & Mathematics > Chemistry > Physical chemistry
This book provides details of the basic frameworks and
characteristics of processes occurring in electronically excited
states of small molecules, complexes, and clusters. It discusses
the perturbations in electronically excited valence states of
molecules induced by intramolecular interaction and intermolecular
interactions, which occur in collisions and optically populated,
weakly bound complexes. Further, it describes the kinetics and
mechanisms of photoprocesses in simple molecules and recombination
accompanied by radiation. The book also offers information on
general kinetics for gas-phase processes and basic theoretical
frameworks for elementary processes. It features many useful
problems, making it a valuable resource for students and
researchers in molecular spectroscopy/molecular physics and
chemical physics/physical chemistry.
This book presents recently developed computational approaches for
the study of reactive materials under extreme physical and
thermodynamic conditions. It delves into cutting edge developments
in simulation methods for reactive materials, including quantum
calculations spanning nanometer length scales and picosecond
timescales, to reactive force fields, coarse-grained approaches,
and machine learning methods spanning microns and nanoseconds and
beyond. These methods are discussed in the context of a broad range
of fields, including prebiotic chemistry in impacting comets,
studies of planetary interiors, high pressure synthesis of new
compounds, and detonations of energetic materials. The book
presents a pedagogical approach for these state-of-the-art
approaches, compiled into a single source for the first time.
Ultimately, the volume aims to make valuable research tools
accessible to experimentalists and theoreticians alike for any
number of scientific efforts, spanning many different types of
compounds and reactive conditions.
This book includes selected, peer-reviewed contributions from the
2018 International Conference on "Physics and Mechanics of New
Materials and Their Applications", PHENMA 2018, held in Busan,
South Korea, 9-11 August 2018. Focusing on manufacturing
techniques, physics, mechanics, and applications of modern
materials with special properties, it covers a broad spectrum of
nanomaterials and structures, ferroelectrics and ferromagnetics,
and other advanced materials and composites. The authors discuss
approaches and methods in nanotechnology; newly developed,
environmentally friendly piezoelectric techniques; and physical and
mechanical studies of the microstructural and other properties of
materials. Further, the book presents a range of original
theoretical, experimental and computational methods and their
application in the solution of various technological, mechanical
and physical problems. Moreover, it highlights modern devices
demonstrating high accuracy, longevity and the ability to operate
over wide temperature and pressure ranges or in aggressive media.
The developed devices show improved characteristics due to the use
of advanced materials and composites, opening new horizons in the
investigation of a variety of physical and mechanical processes and
phenomena.
Lowe's new edition assumes little mathematical or physical
sophistication and emphasizes an understanding of the techniques
and results of quantum chemistry. It can serve as a primary text in
quantum chemistry courses, and enables students and researchers to
comprehend the current literature. This third edition has been
thoroughly updated and includes numerous new exercises to
facilitate self-study and solutions to selected exercises.
* Assumes little initial mathematical or physical sophistication,
developing insights and abilities in the context of actual
problems
* Provides thorough treatment of the simple systems basic to this
subject
* Emphasizes UNDERSTANDING of the techniques and results of modern
quantum chemistry
* Treats MO theory from simple Huckel through ab intio methods in
current use
* Develops perturbation theory through the topics of orbital
interaction as well as spectroscopic selection rules
* Presents group theory in a context of MO applications
* Includes qualitative MO theory of molecular structure, Walsh
rules, Woodward-Hoffmann rules, frontier orbitals, and organic
reactions
develops MO theory of periodic systems, with applications to
organic polymers.
This book presents the design and development of an Internet of
Things (IoT) enabled, smart sensor to detect nitrate contamination
in natural water. It considers three different sensors designed,
fabricated and configured for nitrate detection: a Graphite/PDMS
and Si-based MEMS sensors, and aFR4-based sensor. It also
introduces a selective polymer material developed by means of the
ion imprinting polymerization technique that was used as a coating
on the Si-based MEMS sensor. Further, the book discusses the
development of a smart sensing system that can be used to remotely
monitor the nitrate concentration in any water. Fully explaining
all the techniques used, the book is of interest to engineers,
researchers and scientists working in the field of the
water-quality measurement.
This textbook provides an accessible introduction to physics for
undergraduate students in the life sciences, including those
majoring in all branches of biology, biochemistry, and psychology
and students working on pre-professional programs such as
pre-medical, pre-dental, and physical therapy. The text is geared
for the algebra-based physics course, often named College Physics
in the United States. The order of topics studied are such that
most of the problems in the text can be solved with the methods of
Statics or Dynamics. That is, they require a free body diagram, the
application of Newton’s Laws, and any necessary kinematics.
Constructing the text with a standardized problem-solving
methodology, simplifies this aspect of the course and allows
students to focus on the application of physics to the study of
biological systems. Along the way, students apply these techniques
to find the tension in a tendon, the sedimentation rate of red
blood cells in haemoglobin, the torques and forces on a bacterium
employing a flagellum to propel itself through a viscous fluid, and
the terminal velocity of a protein moving in a Gel Electrophoresis
device. This is part one of a two-volume set; volume 2 introduces
students to the conserved-quantities and applies these
problem-solving techniques to topics in Thermodynamics, Electrical
Circuits, Optics, and Atomic and Nuclear Physics always with
continued focus on biological applications.
This book introduces recent progress in preparation and application
of core-shell and yolk-shell structures for attractive design of
catalyst materials. Core-shell nanostructures with active core
particles covered directly with an inert shell can perform as
highly active and selective catalysts with long lifetimes.
Yolk-shell nanostructures consisting of catalytically active core
particles encapsulated by hollow materials are an emerging class of
nanomaterials. The enclosed void space is expected to be useful for
encapsulation and compartmentation of guest molecules, and the
outer shell acts as a physical barrier to protect the guest
molecules from the surrounding environment. Furthermore, the
tunability and functionality in the core and the shell regions can
offer new catalytic properties, rendering them attractive platform
materials for the design of heterogeneous catalysts. This book
describes the recent development of such unique nanostructures to
design effective catalysts which can lead to new chemical
processes. It provides an excellent guide for design and
application of core-shell and yolk-shell structured catalysts for a
wide range of readers working on design of attractive catalysts,
photocatalysts, and electrocatalysts for energy, environmental, and
green chemical processes.
This elegant book provides a student-friendly introduction to the
subject of physical chemistry. It is concise and more compact than
standard textbooks on the subject and it emphasises the two
important concepts underpinning physical chemistry: quantum
mechanics and the second law of thermodynamics. The principles are
challenging to students because they both focus on uncertainty and
probability. The book explains these fundamental concepts clearly
and shows how they offer the key to understanding the wide range of
chemical phenomena including atomic and molecular spectra, the
structure and properties of solids, liquids and gases, chemical
equilibrium, and the rates of chemical reactions.
The book reviews photosynthetic water oxidation and proton-coupled
electron transfer in photosystem, focusing on the molecular
vibrations of amino acid residues and water molecules.
Photosynthetic water oxidation performed by plants and
cyanobacteria is essential for the sustenance of life on Earth, not
only as an electron source for synthesizing sugars from CO2, but
also as an O2 source in the atmosphere. Water oxidation takes place
at the Mn4CaO5 cluster in photosystem II, where a series of
electron transfer reactions coupled with proton transfer occur
using light energy. The author addresses the unresolved mechanisms
of photosynthetic water oxidation and relevant proton-coupled
electron transfer reactions using a combined approach of
experimental and computational methods such as Fourier transform
infrared difference spectroscopy and quantum chemical calculations.
The results show that protonation and hydrogen-bond structures of
water molecules and amino acid residues in the protein play
important roles in regulation of the electron and proton transfer
reactions. These findings and the methodology make a significant
contribution to our understanding the molecular mechanism of
photosynthetic water oxidation.
Chemical Modelling: Applications and Theory comprises critical
literature reviews of molecular modelling, both theoretical and
applied. Molecular modelling in this context refers to modelling
the structure, properties and reactions of atoms, molecules &
materials. Each chapter is compiled by experts in their fields and
provides a selective review of recent literature, incorporating
sufficient historical perspective for the non-specialist to gain an
understanding. With chemical modelling covering such a wide range
of subjects, this Specialist Periodical Report serves as the first
port of call to any chemist, biochemist, materials scientist or
molecular physicist needing to acquaint themselves with major
developments in the area. Volume 6 examines the literature
published between June 2007 and May 2008
This elegant book provides a student-friendly introduction to the
subject of physical chemistry. It is concise and more compact than
standard textbooks on the subject and it emphasises the two
important concepts underpinning physical chemistry: quantum
mechanics and the second law of thermodynamics. The principles are
challenging to students because they both focus on uncertainty and
probability. The book explains these fundamental concepts clearly
and shows how they offer the key to understanding the wide range of
chemical phenomena including atomic and molecular spectra, the
structure and properties of solids, liquids and gases, chemical
equilibrium, and the rates of chemical reactions.
This book provides a brief research source for optical fiber
sensors for energy production and storage systems, discussing
fundamental aspects as well as cutting-edge trends in sensing. This
volume provides industry professionals, researchers and students
with the most updated review on technologies and current trends,
thus helping them identify technology gaps, develop new materials
and novel designs that lead to commercially viable energy storage
systems.
This book introduces readers to experimental techniques of general
utility that can be used to practically and reliably determine
nucleation rates. It also covers the basics of gas hydrates, phase
equilibria, nucleation theory, crystal growth, and interfacial
gaseous states. Given its scope, the book will be of interest to
graduate students and researchers in the field of hydrate
nucleation. The formation of gas hydrates is a first-order phase
transition that begins with nucleation. Understanding nucleation is
of interest to many working in the chemical and petroleum industry,
since nucleation, while beneficial in many chemical processes, is
also a concern in terms of flow assurance for oil and natural gas
pipelines. A primary difficulty in the investigation of gas hydrate
nucleation has been researchers' inability to determine and compare
the nucleation rates of gas hydrates across systems with different
scales and levels of complexity, which in turn has limited their
ability to study the nucleation process itself. This book
introduces readers to experimental techniques that can be used to
practically and reliably determine the nucleation rates of gas
hydrate systems. It also covers the basics of gas hydrates, phase
equilibria, nucleation theory, crystal growth, and interfacial
gaseous states. Given its scope, the book will be of interest to
graduate students and researchers in the field of hydrate
nucleation.
This book is about the drift, diffusion, and reaction of ions
moving through gases under the influence of an external electric
field, the gas temperature, and the number density. While this
field was established late in the 19th century, experimental and
theoretical studies of ion and electron swarms continue to be
important in such varied fields as atomic and molecular physics,
aeronomy and atmospheric chemistry, gaseous electronics, plasma
processing, and laser physics. This book follows in the rigorous
tradition of well-known older books on the subject, while at the
same time providing a much-needed overview of modern developments
with a focus on theory. Graduate students and researchers new to
this field will find this book an indispensable guide, particularly
those involved with ion mobility spectrometry and the use of ion
transport coefficients to test and improve ab initio ion-neutral
interaction potentials. Established researchers and academics will
find in this book a modern companion to the classic references.
The Phase Field Crystal (PFC) model incorporates microscopic
structural details into a mesoscopic continuum theory. Methods for
fast propagation of PFC interfaces are discussed in this book. They
can handle a wide range of thermal gradients, supersaturations and
supercoolings, including applications such as selective laser
melting. The reader will find theoretical treatment in the first
half, while the latter half discusses numerical models.
Chemical Kinetics bridges the gap between beginner and specialist
with a path that leads the reader from the phenomenological
approach to the rates of chemical reactions to the state-of-the-art
calculation of the rate constants of the most prevalent reactions:
atom transfers, catalysis, proton transfers, substitution
reactions, energy transfers and electron transfers. For the
beginner provides the basics: the simplest concepts, the
fundamental experiments, and the underlying theories. For the
specialist shows where sophisticated experimental and theoretical
methods combine to offer a panorama of time-dependent molecular
phenomena connected by a new rational.
Chemical Kinetics goes far beyond the qualitative description: with
the guidance of theory, the path becomes a reaction path that can
actually be inspected and calculated. But Chemical Kinetics is more
about structure and reactivity than numbers and calculations. A
great emphasis in the clarity of the concepts is achieved by
illustrating all the theories and mechanisms with recent examples,
some of them described with sufficient detail and simplicity to be
used in general chemistry and lab courses.
* Looking at atoms and molecules, and how molecular structures
change with time.
* Providing practical examples and detailed theoretical
calculations
* Of special interest to Industrial Chemistry and Biochemistry
Unimolecular reactions are in principle the simplest chemical
reactions, because they only involve one molecule. The basic
mechanism, in which the competition between the chemical reaction
step and a collisional deactivation leads to a pressure-dependent
coefficient, has been understood for a long time. However, this is
a rapidly developing field, and many new and important discoveries
have been made in the past decade.
This First Part Part of Two CCK Volumes dealing with Unimolecular
Rections, deals with the Reaction Step. The first chapter is an
introduction to the whole project, aiming to cover the material
necessary to understand the content of the detailed chapters, as
well as the history of the development of the area. Chapter 2 is a
review of the modern view of the statistical theories, as embodied
in the various forms of RRKM theory. Chapter 3 deals with the fully
quantum mechanical view of reactive states as resonances.
. Presents considerable advances in the field made during the last
decade.
. Treats both the statistical as well as the fully quantum
mechanical view.
Chemical Modelling: Applications and Theory comprises critical
literature reviews of all aspects of molecular modelling. Molecular
modelling in this context refers to modelliing the structure,
properties and reactions of atoms, molecules and materials. Each
chapter provides a selective review of recent literature,
incorporating sufficient historical perspective for the
non-specialist to gain an understanding. With chemical modelling
covering such a wide range of subjects, this Specialist Periodical
Report serves as the first port of call to any chemist, biochemist,
materials scientist or molecular physicist needing to acquaint
themselves with major developments in the area.
This book aims at identifying novel advanced materials of extreme
wetting properties (MEWP) for practical, industrial applications.
The state-of-the art superhdyrophobic, superhdyrophilic,
superoleophobic, superoleophilic, and superomniphobic materials,
that are MEWP, with respect to their technological and emerging
industrial applications are discussed in this book. MEWP offer new
perspectives providing numerous potential applications. Hence,
these advanced MEWP have the potential to lead to a new generation
of products and devices with unique properties and functionalities.
Despite the large scientific progress on MEWP there are still some
obstacles which have to be solved to make these materials available
for real life applications. Recent advances on the production
strategies, including methods and materials, of MEWP has shown that
the durability and sustainability obstacles can be addressed thus
offering the possibility for industrial exploitation. MEWP with
wettabilities ranging from superhydrophobicity to
superhydrophilicity provide promising avenues for several and
important applications, which sometimes are crucial for the
humankind. This book also discusses a large variety of other
potential applications of MEWP, thus providing new ideas to
scientists and engineers for further exploitation of these novel
materials. Moreover, the whole spectrum of the recent technological
developments, current research progress, future outlook, and the
modern trends in the applications of MEWP are discussed in a
consistent approach.
This book uses experimental and computational methods to
rationalize and predict for the first time the relative impact
sensitivities of a range of energetic materials. Using knowledge of
crystal structures, vibrational properties, energy-transfer
mechanisms, and experimentally measured sensitivities, it describes
a model that leads to excellent correlation with experimental
results in all cases. As such, the book paves the way for a new,
fully ab initio approach for the design of safer energetic
materials based solely on knowledge of their solid-state
structures. Energetic materials (explosives, propellants, gas
generators, and pyrotechnics) are defined as materials that release
heat and/or gaseous products at a high rate upon stimulus by heat,
impact, shock, sparks, etc. They have widespread military and
civilian uses, including munitions, mining, quarrying, demolition,
emergency signaling, automotive safety, and space exploration. One
of their most important properties is sensitivity to accidental
initiation during manufacture, transport, storage, and operation,
which has important implications for their safe use.
This book provides a comprehensive review of functional
nanomaterials for electrochemical applications, presenting
interesting examples of nanomaterials with different dimensions and
their applications in electrochemical energy storage. It also
discusses the synthesis of functional nanomaterials, including
quantum dots; one-dimensional, two-dimensional and
three-dimensional nanostructures; and advanced nanocomposites.
Highlighting recent advances in current electrochemical energy
storage hotpots: lithium batteries, lithium-ion batteries,
sodium-ion batteries, other metal-ion batteries, halogen ion
batteries, and metal-gas batteries, this book will appeal to
readers in the various fields of chemistry, material science and
engineering.
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