Comprehensive Analysis of Rolled-up Tubular Structures Fabricated by a Novel Dry Release Technique

Date

Sep 28, 2017

Time

1:30 PM - 2:30 PM

Speaker

Somayeh Moradi

Affiliation

IIN

Language

en

Main Topic

Materialien

Other Topics

Materialien, Physik

Host

Kristina Krummer-Meier

Description

To date, enormous efforts have been made to design, fabricate and optimize functional micro-nanostructure with desirable scale, morphology and geometrical structures. Nowadays, Rolled-up nanotechnology has received increasing Attention because it offers an advanced strategy to deterministically rearrange the planar nanomembranes into three-dimensional tubular micro-nanostructures, which serve for many applications ranging from nanoelectronics, mechanics and fluidics to photonics [1,2]. However, most of the tubular devices such as rolled-up magnetized microstructures[3], optical resonators[4], self-propelled microengines[5], biosensors[6] and many other applications with complex functionalities are based on the fabrication of single or just a few windings microtubes. Rolled-up applications such as large-area rolled-up nanomembrane capacitors[7], rolled-up metamaterial optical fibers and rolled-up hyperlenses[8,9] will work properly if we can provide more compact and interfacial defect-free consecutive rotations in their structures. Considering the difficulties of the creating of tight multiple winding microtubes due to the sacrificially wet etching mechanism of the current rolled-up technology approach, we conclude the fabrication of tight multiple winding applications based on this technology is still a big challenge. To circumvent this challenge, I have demonstrated a novel dry release technique for the rolled-up technology. The ability of this new approach in fabricating of extremely compact and highly symmetric multiple winding tubular structures will be presented in this talk. Moreover, I will present a systematic analysis of the fabricated multiple winding microtubes in both qualitative and quantitative manners. Some other unique tubular architectures fabricated based on this technique including the free-standing microtubes and the wrinkled pattern microtubes will be characterized as well. Furthermore, the generalization of this technique including the compatibility with standard patterning methods and controlling the rolling direction for this new platform will be discussed.

Links

• Seminars at the IFW

Last modified: Sep 28, 2017, 9:41:30 AM