MRSEC Program Overview

Welcome to the internet hub of the Materials Research Science and Engineering Centers (MRSEC). This website provides organized information and resources at the various MRSECs for the international scientific, industrial, and educational materials research and development communities.

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Program Highlights

May 22, 2015

Seeded Growth of Highly Crystalline Molybdenum Disulfide Monolayers at Controlled Locations

Monolayer molybdenum disulfide (MoS2) is a 3-atom thick material with a direct band gap, making it of interest for fundamental science as well as applications in optoelectronics and chemical sensing. Our innovation is a scalable method for “seeded growth” of high quality monolayer MoS2 at controlled locations, which is an important advance towards useful applications of the material.Monolayer molybdenum disulfide (MoS2) is a 3-atom thick material with a direct band gap, making it of interest for fundamental science as well as applications in optoelectronics and chemical sensing. Our innovation is a scalable method for “seeded growth” of high quality monolayer MoS2 at controlled locations, which is an important advance towards useful applications of the material.

Growth “seeds” of molybdenum-containing material are patterned at known locations with micrometer resolution. Crystalline islands of MoS2 are grown from the seeds by chemical vapor deposition.

Structural, optical, and electrical measurements show that the growth is high quality monolayer MoS2. With MoS2 islands
at known locations, it is straightforward to fabricate MoS2 transistors with minimal chemical contamination for device applications.

May 22, 2015

Fractal Mechanical Structures

Fractal cut sheets for conformable wrappingHow can we wrap a 3d object with a sheet of paper without folds? Wrapping implies the ability to stretch as much as bend.  Using concepts from fractal geometry, we have designed and realized a new class of materials with unprecedented control of stretchability and bendability to conformally wrap any shape or expand to nearly any predetermined shapes.