A.A. Balandin

Graduate Study in Materials Science and Engineering

Join us in the Next Technology Revolution

Alexander A. Balandin

Chair, Materials Science and EngineeringProfessor, Electrical Engineering

University of California – Riverside

September 2010

A.A. Balandin

Definitions

Materials Science and Engineering (MS&E) is concerned with the study of the structure, properties and applications of materials.

MS&E program aims to provide fundamental knowledge of materials with the objective of predicting, modifying and tailoring the properties of materials to achieve enhanced material/device performance.

The MS&E foundations are the basic sciences of physics, chemistry and mathematics.

The great variety of materials response at the electrical, optical, magnetic, mechanical and chemical levels requires from MSE experts a solid scientific foundation and breadth of basic knowledge.

A.A. Balandin

General Motivations for MS&E Program

New trend: innovations are happening more and more often at materials level

Electronic industry: substituting silicon and gate dielectrics Optoelectronic industry: placing III-Vs on silicon Thermoelectric industry: finding right material Energy: materials for direct energy conversion and storage

Global competition for energy resources and raw materials Engineering profession

More of the interdisciplinary expertise Job market: local, state, nation-wide

Materials characterization jobs are still in US

A.A. Balandin

Example of the Major Innovations at Materials Level

Information from Intel web-sitehttp://download.intel.com/technology/silicon/HighK-MetalGate-PressFoils-final.pdf

A.A. Balandin

Innovations at the Materials Level: Photovoltaic Solar Cells

Quantum dot superlattice as

an intrinsic layer

Front contact

n type

p type

Light coating

Back contact

Shockley limit: ~33% conversion efficiency for bulk materials due to the loss of excess kinetic energy of the hot photo-generated carriers and energy loss of photons which are less than materials band gap.

Thermodynamic limit for conversion: ~93%After Q. Shao, A.A. Balandin, A.I. Fedoseyev and M. Turowski, "Intermediate-band solar cells based on quantum dot supra-crystals," Applied Physics Letters, 91: 163503 (2007).

A.A. Balandin

Innovations: Discoveries of New Materials with Unique Properties

Figure: Graphene suspended over a trench. Optical image of graphene-over-trench attached to the heat sink. The flake was laser-heated in the middle.

Giant thermal conductivity, flat geometry and demonstrated graphene – Si integration suggests that graphene can become superior material for thermal management of nanoscale devices

A.A. Balandin, et al., "Superior thermal conductivity of single-layer graphene," Nano Letters, 8: 902 (2008).

Artistic rendering of graphene lateral heat spreaders for advanced chips from a recent IEEE Spectrum feature article Chill Out: New Materials and Designs Can Keep Chips Cool by A.A. Balandin.

A.A. Balandin

Facilities for MS&E Research and Education

Materials synthesis and characterization facilities are essential for successful program

New Materials Science & Engineering building

A.A. Balandin

Specialization Areas

Specialization areas within MS&E major

Electronic and Magnetic Materials Biomaterials Structural Materials and Composites Materials Synthesis & Processes Computational Materials Science

A.A. Balandin

Visit MS&E Web-Site http://www.mse.ucr.edu/