News & Events

Hemali Rathnayake, Ph.D.

Posted on August 31, 2018


Date - August 31, 2018
1:00 pm - 2:00 pm


Professor of Nanoscience
Joint School of Nanoscience and Nanoengineering
Talk Title: Nanomaterials by Design for Emerging Technologies – Functional Hierarchical
Structures for Nanoelectronics


Complementary metal-oxide-semiconductor (CMOS), a technology for
constructing integrated circuits, in silicon technology will reach to fundamental
limitations with the demand for continuous miniaturization of device dimensions.
Although, it is now possible to produce an amazing array of nanoscale materials and
morphologies, assembling these into ordered arrays and integration with other materials
remains a key challenge. Emerging application opportunities also drive the need for
functional diversification, which requires enhanced functional density and the
heterogeneous integration of functional materials with tailored structures on a CMOS
platform. Therefore, it is more realistic integrating new application specific materials and
structures on a CMOS platform and take advantage of both technologies. However, this
added complexity challenges the extensibility of conventional fabrication and patterning
methods. Consequently, there remains a need for simple fabrication methods that can
create two- and three-dimensional ordered structures, which are adaptable to a wide
variety of materials.

This research addresses specific application needs and related critical materials design,
fabrication, and patterning challenges by exploring a relatively un-tapped novel class of
functional materials – organic-inorganic hybrid frameworks and analogues, which
possess robust and higher order materials architecture with tailored functionality as a
viable solution for the functional diversification and patterning on CMOS platform. These
nanoscale building blocks and their assemblies, with feature size down to <7 nm are
designed to provide collective enhancement of the functional properties through
component-to-component conjugated covalent and non-covalent interactions. The
operational simplicity, processing, and self-assembly through simple solution-based
coatings also will lead to dramatic improvements at the system level.