Scientists Develop Contactless Method To Bend Diamond At The Nanoscale

Diamonds are the hardest mineral known to humans. But, at the nanoscale, diamond can actually be bent and deformed. A unique contactless way of doing so has been developed by a team of Australian scientists. In the process of their work, they also discovered a new form of plastic deformation and a new form of carbon.

“Diamond is the frontrunner for emerging applications in nanophotonics, microelectrical mechanical systems and radiation shielding,” said the lead author of the study, PhD student Blake Regan from the University of Technology Sydney (UTS), in a statement. “This means a diverse range of applications in medical imaging, temperature sensing and quantum information processing and communication.”



Recommended For You

The Ultimate ?Marketer-Friendly? Webinar Platform

Run LIVE Meetings, LIVE Webinars, EVERGREEN Webinars, And HYBRID Webinars With ZERO Technical Skills

MediaCloudPro - Personal Use

Grab these Powerful, Image Editing Tools with 7 Million+ ‘Royalty-Free’ Stock Assets to Dominate Your Niche and Start Your Own 6-Figure Design Business Within Minutes Only!!!


In order for diamond to be fully utilized in these fields, its behavior at the nanoscale needs to be understood. Carbon-based nanomaterials, like diamond, have different mechanical properties when in their natural state compared to at micro and nanoscales. Therefore, how diamond bends, deforms, changes state, and cracks at these tiny scales needs to be tested, noted the researchers. “And we haven’t had this information for single-crystal diamond,” Regan said.

Published in Advanced Materials, the study details how diamond nanoneedles, or nanopillars, which look a little like small toothbrush bristles, can be manipulated by a scanning electron microscope (SEM). The electron beam of an SEM locally charges the 20 nanometer-wide nanopillars and their surroundings, which generates a coulomb force (electric field force) that deflects the nanopillars.

It’s the case of “like repel like” not “opposites attract” in this experiment. The positive charged tips of the diamond nanopillars deflect one another, producing the bend. Trong Toan Tran/ Univeristy of Technology Sydney

The team, which also included scientists from Curtin University and Sydney University, observed two types of deformation of the diamond nanoneedles. First, they used the technique to reversibly bend the nanopillar to 90 degrees without fracturing, in what is known as elastic deformation.

In further testing, when the nanoneedles were of a specific dimension and the diamond crystals were orientated in a particular way, the researchers created a permanent distortion of the diamond, which hadn’t been seen before.

In elastic deformation (top) the bent object will return to normal. However, in plastic deformation (bottom) the bent object will remain distorted and not bend back. CDang and Yapparina / Wikimedia commons

The new form of plastic deformation can be explained by the emergence of a new form of carbon, called O8-carbon.

“Unlike many other hypothetical phases of carbon, O8-carbon appears spontaneously under strain with the diamond-like bonds progressively breaking in a zipper-like manner, transforming a large region from diamond into 08-carbon,” Professor Igor Aharonovich, nanophotonics group leader at UTS, said in a statement.

A previous study from 2018 also managed to bend diamond without it breaking, but did so by placing an object in situ to cause the flex.

Discovering this “unprecedented mechanical behavior of diamond” will aid many fields in their use of diamonds in nanotechnology. “Our findings will support the design and engineering of new devices in applications such as super-capacitors or optical filters or even air filtration,” Aharonovich said.


Recommended For You

DFY Hero

100+ Done For You Battle-Tested And Proven-To-Convert Stunning Websites, Sales Pages,Squeeze Pages, Ecom Stores And Blogs

Funnel360 - Annual

Now You Can Fire Your Page Builders, Video Creators and Graphic Designers and use Funnel360 To Create Lightning Fast Funnel Pages, Viral Videos And Jaw Dropping Graphics In a Few Minutes, Using the Worldand#39;s Most Complete Drag-n-Drop Funnel Builder

Moto Theme 4.0 - Developer Licence

All in One WordPress Theme with 150 Pre Made layouts and Drag n Drop Page Builder


Original Article : HERE ;


Recommended For You

Spin Rewriter

A Well Known, Yet Underestimated SEO Trick For 2019...

Live Vid Ranker Pro

LiveVidRanker is a Revolutionary SaaS system using Never Before Seen Technologies... all helping you to do ONE THING very well. Thatand#39;s getting Page 1 Rankings on YouTube and Google practically Instantly. =)

vidgrafiX Lite

Biggest Video Graphic Asset Library


Leave a Reply