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Published on 20.08.12

CRANN Image Competition 2012

"Kryptonite" by Niall McEvoy

In first place was "Kryptonite" by Niall McEvoy.

Description:

Sample Prepared by: Maria O’Brien. Image taken by: Niall Mc Evoy. Image Captured With: Zeiss Ultra SEM PI: Prof. Duesberg

Kryptonite, superman’s only weakness being produced in CRANN on the nanoscale? Not quite, shown here are ZnO nanorods grown by a low temperature solution based process. These have been recoloured for artistic effect but in reality are quite useful with a range of applications in photonics and sensing.

 

Second place was Amir Sajad Esmaeily with "Closed pores of Anodic Aluminium Oxide"

Description:

These images are taken by the SEM ZEISS ULTRA at the Advanced Microscopy Laboratory of CRANN in Trinity College Dublin.

Images show the closed pores of Anodic Aluminium Oxide (AAO) templates for the fabrication of one dimensional nanostructures. These images have never taken before by this details and clearity elsewhere. This research is to fabricate highly ordered arrays of magnetic nanowires to produce magnetic field gradients by using these templates to employ these structures as modified electrodes of Fuel Cells. Recently JMD Coey et al. proved that by using these nano-electrodes the efficiency of PEM Fuel Cells considerably increases. So, the motivation was to employ highly ordered structures with different shapes to produce high quality electrodes for PEM Fuel Cells and by this way save millions of dollars in the Fuel Cell industry trough maximising the efficiency of aforementioned Fuel Cells and also solve a part of energy problem during near future energy crisis.

 

 

Third place was "Asteroid Belt" by Rohit Mishra.

Description:

This is an image of crystallized Carbamide dyed with azo orange and imaged using a Zeiss Axio Imager in the polarized transmission mode. The colors seen in the image are real and obtained because of the crystal structures interaction with polarized light (the same technique used in modern 3D cinema glasses). Carbamide’s is a strong agent for dehybridization (separation) of double stranded DNA to individual strands as well as for denaturing proteins. Hence it is widely used as a regeneration scheme in several bio-chips and bio-sensors.

 

 

Fourth place went to Victor Usov with "Canyon on Sapphire".

Description:

Instrument: AFM (tapping mode).

The image is a staircase morphology induced on a sapphire crystal surface by applied electric field. This is the first ever observation of the electromigration induced bunching of atomic steps on the crystallographic surface of a dielectric material. Initial single atomic steps are only 0.3 nm high. They move closer to each other under the influence of the electromigration force and gradually build up “gigantic steps” reaching tens and hundreds of nanometres in height and separated by micrometer wide flat terraces. This research studies fundamentals of surface atoms interaction with the crystal phase and opens new opportunities for the adatom surface manipulation and bottom-up fabrication.

 

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