Home | Amazing | Today | Tags | Publishers | Years | Account | Search 
Metal-Polymer Nanocomposites

Buy
Metal-Polymer Nanocomposites, 9780471471318 (0471471313), John Wiley & Sons, 2004
A nanocluster is a tiny chunk of the bulk measuring a few nanometers with
a finite number of atoms in it. Nano-sized metals with sizes in the range of 1–
50 nm are considered important and are obtainable as sols—a dispersion of a
solid in a liquid. Metal sols possess fascinating colors and have long been used
as dyes and catalysts. That such dyes indeed consist of tiny metal chunks was
established as early as 1857 by Faraday [1, 2]. Modern techniques of synthesis
enable one to obtain sols of metals that can be dried and redissolved like
water colors. The nano-sized clusters display a remarkable tendency to remain
single-crystalline and hence are also called nanocrystals. In addition, nanocrystals
possess a high surface area: A great fraction of atoms in a nanocrystal is
on its surface [3].

An added dimension to research on nanocrystals is their size-dependent
properties. The electronic, magnetic, and optical properties of a nanocrystal
depend on its size [3]. In small nanocrystals, the electronic energy levels are
not continuous as in the bulk but are discrete, due to the confinement of the
electron wavefunction to the physical dimensions of the particles [4]. This phenomenon
is called quantum confinement; therefore, nanocrystals are also known
as quantum dots. In other words, a small nanocrystal could be a very bad conductor,
although nanocrystals are tiny silhouettes of the conducting bulk. Likewise,
a tiny nanocrystal of a ferromagnet can be paramagnetic in nature. In
several respects, small nanocrystals behave like molecules. The nanocrystals
can be discretely charged with electrons with characteristic charging energies.
This means that a nanocrystal carrying an extra electron can exhibit properties
different from those of a neutral species.

The shrinking dimensions of the current microelectronic devices and the
realization that current lithographic processes cannot extend to the nanoworld
[5] have lent tremendous thrust to research aimed at ordering nanocrystals into
functional networks [6–11]. The nanocrystals akin to covalent systems selfassemble
into ordered arrays in one, two, and three dimensions under the right
conditions. Lattices of nanocrystals consist of interacting nanocrystals and may
exhibit novel properties arising out of such interactions. Thus, the ability to
engineer such assemblies extends the reach of current lithographic techniques
and holds promise for a new generation of electronics of the nanoworld [6].
In this context, synthesis and programmed assembly of nanocrystals assume
significance.
(HTML tags aren't allowed.)

Lonely Planet Israel & the Palestinian Territories (Country Guide)
Lonely Planet Israel & the Palestinian Territories (Country Guide)

“Since the dawn of history, Israel and the Palestinian Territories – at the intersection of Asia, Europe and Africa – have been a meeting point of empires, religions, cultures and cuisines.” – Daniel Robinson, Lonely Planet Writer

Our Promise
You can trust our travel information
...

Making Sense of Change Management: A Complete Guide to the Models, Tools & Techniques of Organizational Change
Making Sense of Change Management: A Complete Guide to the Models, Tools & Techniques of Organizational Change

Making Sense of Change Management is about making change easier. It is aimed at anyone who wants to understand why change happens, how it happens and what needs to be done to make change a welcome rather than a dreaded concept. However, this book is not a ‘one size fits all’ simplistic panacea to all change, whatever the...

The UX Book: Process and Guidelines for Ensuring a Quality User Experience
The UX Book: Process and Guidelines for Ensuring a Quality User Experience

The UX Book, winner of a 2013 Most Promising New Textbook Award from the Text and Academic Authors Association, is a comprehensive textbook on designing interaction to ensure a quality user experience. Combining breadth, depth, and practical applications, this book takes a time-tested process-and-guidelines approach that provides...


eXtreme .NET : Introducing eXtreme Programming Techniques to .NET Developers
eXtreme .NET : Introducing eXtreme Programming Techniques to .NET Developers

eXtreme .NET shows developers and team leaders how to incorporate eXtreme programming (XP) practices with .NET-connected technologies to create high quality, low-cost code that will build better software. This practical, realistic guidebook systematically covers...

Castles and Fortified Cities of Medieval Europe: An Illustrated History
Castles and Fortified Cities of Medieval Europe: An Illustrated History

During the Middle Ages, castles and other fortified buildings were a common feature of the European landscape. As central powers rose and fell, the insecurity of the time inspired a revival of fortification techniques first introduced in the Roman Empire. Despite limitations in construction techniques and manpower, medieval fortifications...

A Manager's Guide To PR Projects: A Practical Approach (LEA's Communication Series)
A Manager's Guide To PR Projects: A Practical Approach (LEA's Communication Series)
A Manager s Guide to PR Projects was conceived, gestated, and produced
out of sheer frustration. Perhaps a more academic approach to this explanation
would be to say that one university professor experienced considerable
difficulty in acquiring appropriate materials to support a pedagogical approach
involving student
...
©2019 LearnIT (support@pdfchm.net) - Privacy Policy