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Essentially every technology depends
on materials development and innovation. Novel
technologies are dependent on materials development,
whether the product is improved opto-electronics
for communications, biomaterials such as prosthetics
for joint replacement or carriers for drug delivery,
batteries for portable computers, sensor materials,
or high strength-to-weight materials for airplanes
or automobiles. Conventional technologies rely
on materials development to either reduce production
cost or respond to mandates of the marketplace.
Materials have an internal structure (microstructure),
which must be understood at many different length
scales, from the atomic and nanoscale (10-10 to
10-9 m) to the macroscopic scale (10-6 to 10-2
m), in order to predict their behavior and to
be able to engineer with them. It is thus essential
to understand how to process materials in order
to obtain desirable microstructures and how to
develop material properties by microstructural
control that will positively affect the performance
of a material in an engineering application. The
overarching paradigm of materials science and
engineering is thus to exploit the connection
between processing, microstructure and the properties
of a material in order to choose a material that
will fit the performance criteria for a given
application. Thus in Materials Science and Engineering,
one must develop:
- an understanding of current materials and
their applications;
- an ability to further improve current materials;
and,
- an ability to understand the potential applications
of new materials, as they are developed.
In addition to this product specific knowledge,
a Materials Engineer must understand the implications
of Materials processing routes on the environment
and energy resources and must be involved in life
cycle analysis to ensure that the material can
be properly produced, used and recycled in a sustainable
manner.
Materials Science & Engineering is therefore
the discipline that applies the tools of basic
and applied science to the processing, manufacture
and application of materials and devices. Graduates
of the MSE department are pursuing careers in
an expanding spectrum of companies, national laboratories,
and universities. Their activities cover a wide
range of materials related endeavors that include
microelectronics, energy production and storage,
biomedical applications, aerospace, information
technology, nanotechnology, manufacturing and
materials production. Energy conservation, property
control and improvement, nanotechnology, biomaterials
and the development of electronic, optical and
magnetic materials are just a few of the topics
that are the subjects of active research within
the department. Most of our undergraduates are
encouraged to participate in the current research
programs of the faculty and most of our students
conduct undergraduate research projects as part
of their undergraduate program. More than 50%
of our undergraduate students choose to attend
graduate school and are accepted into the top
Materials graduate schools in the country.
Materials Science and Engineering is a discipline
that draws heavily on basic sciences such as chemistry,
mathematics and physics, and also on engineering
fundamentals, to develop materials which are useful
for the technological needs of our society. The
development of new materials and the understanding
and control of the structure and properties of
new, as well as existing materials, are essential
parts of this discipline. Materials subjects thus
fall into three broad areas:
- materials characterization,
- the synthesis and processing of materials
in order to obtain desired properties, and
- the ability to understand and predict the
behavior of materials under diverse conditions.
Due to the need to understand materials microstructure,
chemistry and properties, students in Materials
Engineering learn techniques of materials characterization
in the digital microscopy classroom in the J.
Earl and Mary Roberts Materials Characterization
Laboratory, a state of the art facility for
materials characterization within the department.
Materials Science and Engineering is the overarching
term describing specific interests in metals,
polymers, ceramics, composites and electronic
materials. It has become increasingly clear that
the properties of all these types of materials
are related fundamentally through parameters that
describe internal structure. Furthermore, it has
been found that the equipment and instrumentation,
as well as the theoretical and analytical tools,
which are necessary to process, study and understand
one type of material are often well suited for
others. Thus a common set of tools and understanding
has been developed that applies to the complete
spectrum of materials types, including ceramics,
polymers, metals, semiconductors and composites,
etc.
The standard curriculum of the department provides
fundamental training for all of materials science
and engineering areas (http://neon.mems.cmu.edu/UG_1.html).
The core courses provide understanding and tools
for working with the (atomic) structure of materials,
the defects (dislocations, interfaces etc.) that
largely govern their properties, the thermodynamic
relationships that govern the stability of materials,
and the rates at which changes take place in materials.
The paradigm of materials science is that one
must understand the internal or surface structure
of materials in order to predict and engineer
their properties: this is addressed in the core
courses on "Microstructure & Properties" and
"Selection & Performance" of materials. There
is also a capstone design experience in the final
year that is aimed at integration of knowledge
and team skill development. The elective program
allows the attainment of excellence in a student's
chosen specialty, whether it is ceramics, semiconductors,
metals, composites, magnetic or optical materials,
biomaterials or polymers. The option of concentration
in the one or more of the areas of electronic
materials*, engineering design*, biomedical engineering*,
environmental engineering*, manufacturing engineering*,
mechanical behavior of materials*, biomedical
and health engineering**, and engineering and
public policy**, is available. (*= Designated
Minor, **= Double Major). In addition, a number
of elective tracks have been developed to aid
the student in choosing various courses of specialization
in the electives. (http://neon.mems.cmu.edu/MSE/tracks.html)
Based on the broad range of destinations for
graduates of the MSE program, our curriculum is
designed to provide a strong foundation in fundamental
knowledge and skills. This provides an excellent
basis for the substantial fraction of our graduates
who go on to graduate school. For the equally
substantial fraction of our graduates who find
employment in industry, the program provides the
foundation on which a graduate can build his/her
domain specific knowledge. For those individuals
who move on to other areas, the MSE curriculum
provides a modern liberal education, i.e. one
that inculcates a thoughtful, problem-solving
approach to professional life. It is thus the
goal of our education to provide a general education
in Materials Science and Engineering that will
enable our graduates to easily switch between
materials industries as their career develops
or to go to any of the leading institutions of
graduate education in Materials and be successful.
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