Emerging Mid-IR LEDs are competing with lasers in health & environmental sensing, according to Dr. Mark Miller, as featured in the latest edition of Laser Focus World magazine.
LEDs emerge in environmental and health sensing markets
The voracious appetite of the internet-of-things for high-volume, inexpensive optical sensor nodes favors mid-infrared LEDs over lasers for many unmet environmental and health sensing needs. Quantum interband cascade superlattice light emitting diodes (QuiC SLEDs) bring the wavelengths and performance to make these billion-node applications possible.
In this article, there is a complete review of the evolution of mid-IR LEDs, quantum engineering, and a comparison of the QuiC SLED™ to other alloy LEDs, thermal heat sources, and laser diodes.
Sensors Expo 2017 was a great event, as expected, and we connected with some wonderful people. We were pleasantly surprised with the interest in, and enthusiasm for, mid-IR LED sensors. The prominent market demands that stood out for us included a few surprises.
Top areas of interest at the conference:
Automobile sensing – clean air cabins is a hot topic and the car industry is moving faster than we have ever experienced to install sensors for CO2, VOCs and more. What a refreshing change!
Smart Cities – San Jose has been on board for a bit but many other urban areas around the globe are using IoT technology and, more specifically, gas sensing technology on lamp posts to detect carbon monoxide, carbon dioxide, nitrogen oxides, ground level ozone, sulfur dioxide, and gas leaks.
Internet of Things (IoT) and Smart Buildings – smart HVAC can sense CO2, VOCs and other gases to save money and keep people thinking & functioning better. It’s kind of a big deal.
Wearables – between smart watches, smart phones, smart suits, and other devices, health sensing seems to be on the fast track, sensing everything from your heart rate to glucose to ethanol.
Robots – need we say more?!?
And guess what?
Our own patented QuiC SLED technology can be fine tuned at various mid-IR wavelengths to sense all of these and more!
Funny CO2 Sensing Story
Our CO2 sensing demonstration seemed to malfunction a bit, or so we thought, at the end of the first day of the expo. The next morning, when the demonstration oscilloscope peaked better than before, we realized that the levels of CO2 in the exhibition hall were impacting our ability to run our own demonstration…. No wonder everyone was dragging by the end of the day!
For more information about our mid-IR LEDs and how you can use them to improve your gas sensing products, contact us to discuss your specific sensing needs.
Join the Terahertz Device Corp team at this year’s Sensors Expo 2017.
DATES: Wednesday – Thursday, June 28-29, 2017
We will be showcasing our QuiC SLED™ CO2 sensor and detector, and can answer questions about your custom mid-IR LED needs including sensing at various wavelengths from 3µm – 12µm. These wavelengths are great for sensing CO2, CO, ethanol, NH3, methane, glucose, and more.
Technology innovations advance at breakneck speed all around us, with widgets and chips for every device on the planet becoming nearly obsolete shortly after going to market. So it is tempting to want to bypass the technology Autobahn and stay on roads you are most familiar with despite the congestion. But as Wayne Huizenga, founder of three Fortune 500 companies, and six NYSE listed companies reminds us, “you don’t make money sitting in traffic.”
Terahertz Device Corporation is the leader in Mid-infrared LED advancements and will help you avoid all the “traffic delays” to grow your business successfully. Our QuiC SLED™ (quantum cascade superlattice LEDs) enable and enhance your applications in chemical and gas sensing, thermal imaging, night vision, spectroscopy, biophotonics, medical sensing, and communications.
Is climate change in your mission? Are you in global warming regulation and compliance?
Do you want to save money with more efficient CO2 monitoring in smart building and smart home applications?
Are you in oil and gas production, manufacturing, and distribution with needs in widespread methane and other compound sensing?
Would you like to be the first in the wearable device markets to monitor blood glucose and other biomarkers in skin?
With so many applications, our technology can get you out of traffic and to the next level; because as Wayne Huizenga also shares: “Some people dream of success, while other people get up every morning and make it happen.”
Let’s connect today!
Nicole M. Berry
Director of Communication
SPIE Defense & Commercial Sensing Conference – here we come!
Our team is headed to Anaheim, CA, for our next adventure and to share the great news about our QuiC SLED™ product line for mid-infrared LEDs.
Will you be in the area?
Visit our booth #265.
ABOUT SPIE Defense + Commercial Sensing 2017
The leading global technical conferences, courses, and exhibition on sensing, imaging, and photonics technologies for defense, security, health care, and the environment. Hear the latest technical advancements in sensors, infrared technology, laser systems, spectral imaging, radar, LIDAR, and more.
SPIE Defense + Commercial Sensing Expo 2017, the key exhibition for researchers, engineers, product developers, and purchasers who specialize in optics and photonics. See top companies who provide everything from components to the most advanced sensor systems.
The Seventh Sense Blog recently published a blog post on the Sensors Magazine online site. The unknown author referred to as “MD” professes that “Light emitting diodes (LEDs) are probably the most chronicled electronic components of all time, the ones finding more applications by the minute, and the fastest developing…” He (or she) goes on to compare the laser and the LED, featuring the commonalities as well as the differences between laser technology and LED’s.
Some of the highlights of this article include:
“A typical ILD…operates like an LED in that light emission depends on current flow through a PN junction, however it differs in its ability to contain and focus light and its lower-power capabilities.”
“Light emitting diodes (LEDs) are much simpler than laser diodes and share several attributes including their semiconductor origins and the ability to act as a light source. LEDs are also, in some ways, more versatile. For one thing, LEDs handle a wider range of mainstream applications and most people are more knowledgeable when it comes to LEDs as opposed to laser diodes.”
“A semiconductor light source, LEDs are available in three types: low power (2 mA to 20 mA), mid power (100 mA to 1W), and high-power (1W to 3W and higher on the horizon). Wavelengths do not extend to the reaches of laser diodes; LEDs span from less than 400 nm (ultra violet) to around 760 nm (infrared).”
NOTE: We know that LED’s actually span as high as 15 µm (or 15000 nm) with our own mid-infrared LED technology. But we can’t fault the author for not knowing what he doesn’t know, can we?
There is a great comparison chart as well that is worth a review.
To sum up, we enjoy the optimism this author has about the future of LED’s. We look forward to the next rendition of this article after he discovers how far LED’s have come in the last couple years!
December 10, 2015
Can mid-infrared LEDs impact global warming through Internet of Things sensing for methane & CO2?
We think so!
After reviewing this article written by Beatrice Gitau of the Christian Science Monitor about methane gas leaking from the ocean floor, we got to thinking “What if our mid-infrared LEDs, or QuiC SLEDs as we call them, could impact global warming by early detection of methane and carbon dioxide gases by just a few percent? Would that matter?”
Here is a quote from the article that I found interesting:
In 2013, methane accounted for about 10 percent of all US greenhouse gas emissions from human activities according to EPA. Although there’s much less methane in the atmosphere, the gas is 23 times more potent than carbon dioxidein trapping heat in the atmosphere.
We look forward to doing our part in global warming and climate change.
You are welcome.
July 14, 2015
Watch Mark Miller demonstrate the mid-infrared LED QuiC SLED™ at the Sensors Expos in June 2015. This demonstration showcases the detection of CO2 using our PDQ photodiode detector and developer kit pieces.
And the team is off again – this time to Long Beach, California, for the Sensors Expo 2015! If you are in the area, we would love to see you!
This year’s team includes our President & CEO, Mark Miller as well as our Marketing Team, MaryPat Kavanagh and Nicole Berry.
Our latest technology including the QuiC SLED and the Regulator Pulse Driver will be on display
Come see us at BOOTH #713
Here are the details!
Sensors Expo & Conference
Conference & Expo: June 10-11, 2015
Pre-Conference: June 9, 2015
Long Beach Convention Center
Long Beach, CA
Sensing Technologies Driving Tomorrow’s Solutions
Sensors Expo & Conference is the only industry event in North America exclusively focused on sensors and sensor-integrated systems. Celebrating its 30th Anniversary this year, Sensors brings years of technical innovation and thought leadership to engineers and engineering professionals. The Conference Program is dedicated to exploring the most up-to-date innovations in sensor technology, including Embedded Systems, Energy Harvesting, Internet of Things (IoT), Measurement & Detection, MEMS, Optical Sensing & Detection, Sensors @ Work, Wearables, and Wireless. Sensors Expo & Conference identifies cutting-edge trends, explores them in an information-packed conference program and reflects those trends throughout the exhibit floor with new product announcements, key technology-focused areas, such as Energy Harvesting, IoT, MEMS and Wireless, and a showcase of hundreds of products and services.