comment on this article

Novel antenna array boosts THz detection

Researcher Nezih Tolga Yardimci. Pic: Art Montes De Oca/UCLA Engineering

An antenna array developed by researchers at UCLA is said to expand the operation bandwidth and level of sensitivity for imaging and sensing systems that use terahertz frequencies.

Terahertz frequencies are said by the team to be an underused part of the electromagnetic spectrum and could be useful for biological sensing and medical imaging, as well as chemical identification and material characterisation.

One component which researchers are aiming to make more efficient is a terahertz detector. By operating across a broader bandwidth, the nanoscale antenna array developed by the UCLA team can extract more information about a material’s characteristics. For example, its better signal-to-noise ratio means it can find faint target signals, meaning it can be tuned to detect certain chemicals in miniscule amounts.

“Up close, it looks like a row of small grates,” said researcher Nezih Tolga Yardimci, pictured. “We specifically designed the dimensions of the nanoantenna elements and their spacing such that an incoming terahertz beam is focused into nanoscale dimensions, where it interacts with a stream of optical pump photons to produce an electrical signal proportional to the terahertz beam intensity.”

Associate professor Mona Jarrahi added: “The broad operation bandwidth and high sensitivity of this new type of terahertz detector extends the scope and potential uses of terahertz waves for many imaging and sensing applications.”

Graham Pitcher

Comment on this article

This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:

Add your comments


Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Learning by example

Two years ago, ARM decided to investigate the way in which its teams undertake ...

Rugged+ TFT display

The 4.2in Rugged+ thin film transistor (TFT) display from LCD manufacturer KOE ...

EEE Conference

The date for the 2017 Electrical and Electronic Equipment and the Environment ...

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

Beyond graphene

Since the discovery of graphene in 2004, the fascination around the so called ...

A call to arms

Last week saw the second UK Robotics Week. Coordinated by the Engineering and ...

Hitting maturity?

From curved TVs to pop-up presentation screens a new wave of products are ...