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Top 10 sensing applications for mid-IR LEDs

We hope your 2019 is off to a fantastic start and that exciting things are on the horizon for you this year!

 

Sitting at the proverbial round table here at THzDC, we are reflecting on the success and excitement of 2018.  The gas-sensing LED market continues to heat up, and as we set our sights on targets for this year, we thought we would share some market validation (and even a few cool surprises) for featured applications for our QuiC SLED™ (mid-IR LED’s).

Many gas sensing applications become possible because of or otherwise benefit from mid-IR LEDs. In comparison to the other options (MEMS, laser diodes, alloy LEDs, and thermal heat sources), our QuiC SLEDs provide increased light, higher power output, lower power consumption, no cooling required, lower cost, and increased longevity as some of the benefits our customers are seeking.

In previous years, we have shared this Harvard Study, conducted in Fall 2016. It has gained more traction this year. The gist of the article is that increased CO2 in your “personal air space” has a greater impact on your cognitive function than previously considered. This includes impacts of CO2 levels in your home, your car, your workplace, and even your child’s nursery and classrooms.

We are continually researching current and new applications for our cool semiconductor chips, and relish new ideas and conversations from the market. Some of the fun highlights from our interactions this last year include

  1. Personal space sensing – what is happening in your personal air space?  “Personal Air Quality” or PAQ™ is the latest and most impactful trend as we see the shift from global gas sensing to your own personal space.  “Personal air quality” is defined as: knowing the quality/health of the air (CO2, CO, VOCs, NOX, and other gases important for health) in my personal space and what I am exposed to throughout the day. Referencing (again), the Harvard Study (cognitive impacts of CO2 in homes, cars, workplace, classrooms, etc), this concept is becoming of paramount importance – possibly overshadowing the global environmental sensing opportunities. (More to come on this topic in the coming months).
  2. Popular gas sensing – Increased interest in methane, ozone, & formaldehyde. These sensor devices & systems already exist and are ready for our LEDs.
  3. Automotive sector – clean air cabins, emissions, fuel efficiency. These sensor devices & systems are in research and development phases.


Other items & applications of interest:

  1. Litter box – using gas sensors to create smart litter boxes. Your cat will be so impressed!
  2. Diapers – Is there really an effective and easy method to knowing if your child’s (or elderly or disabled) diaper is soiled before the chafing and rashes set in? It seems so…
  3. Carbon emissions – Industries are now providing increased compensation for decreased emissions.
  4. Home sensing – Alexa, Echo, Nest, Siri, et al – these home sensing devices are becoming very popular with increased distribution throughout our communities and increased sensing opportunities with each version.
  5. Health sensing in your breathe – these gases (including NH3, CO2, CO, CH4, NOx, VOCs and more) can be measured in people’s breath to signify/identify health risks & issues – both chronic and acute
  6. Mobile device sensing
  7. Local global & community air quality maps. (see cool AQI maps and other resources here)


Yes – ALL of these applications can be sensed with mid-IR LEDs. 

So what is your application for 2019 that wasn’t possible before?

Let us know what you are up to in the coming year! 

 

 

CO2 sensors video demo - mid-IR LEDs

Mid-IR LEDs Digital Package

Want more information about the QuiC SLED™ mid-infrared LED product line? Bookmark this post for future reference!

Click on each link to view the post, pdf, image or release. We will continue to update this page with sell sheets and other value-added content. Please note that our first mid-infrared LEDs are at the 4.25µm wavelength. We will continue to add wavelengths as we move forward. For more information about your specific applications and/or mid-infrared LED needs, contact us by emailing info @ THzDC.com or complete the Contact FormQuiC SLED mid-infrared LED

Data Sheets and Application Notes

Slides

Mid-Infrared LED QuiC SLED™ Video Demonstration

Click here to access the video demonstration of Mark Miller demonstrating the Mid-Infrared LED QuiC SLED™ at the Sensors Expo in June.

 

Items of Interest

bare die mid-ir LED

Mid-IR LEDs to compete with lasers?

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.

Click here to read the article.

Highlights of the article:

APPLICATIONS FOR MID-IR LEDS

Some of the applications for this technology include monitoring natural gases, automobile exhaust and clean air cabins, smart building, cities and devices, health monitoring, environmental sensing, and so much more.

Opportunities Applications for mid-ir LEDs

 

COMPETITIVE ANALYSIS

Competitive Analysis with mid-ir LEDs, laser diodes, thermal light sources and alloy leds

For more information about our unique & patented QuiC SLED™ mid-IR LEDs including data sheets and application notes, click here. 

Smart City

Mid-IR LEDs and what we learned at Sensors

Sensors Expo 2017 was a great event, as expected, and we connected with some great 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 Smart Citythe 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.

Also, check out our digital package we created for Sensors 2017 here.

A few fun photos from the Sensors 2017 in San Jose, CA

Terahertz Team in

From Left to Right: Mark Miller, Nicole Berry, MaryPat Kavanagh, Karl Farnsworth

Sensors 2017 Terahertz Team

From Left to Right: MaryPat Kavanagh, Mark Miller, Stephen Barkley, Karl Farnsworth

 

visit spie dcs booth 265

Headed to Anaheim for SPIE DCS

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.

SPIE DCS 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.

ABOUT THE SPIE DCS EXPO

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.

Download the 2017 Exhibition Guide (35 MB PDF)

Registration is free—don’t miss this key technical expo.

 

Climate change, global warming, and LEDs

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 dioxide in trapping heat in the atmosphere.

Pacific Ocean methane plumes

Sonar image of bubbles rising from the seafloor off the Washington coast. The base of the column is 1/3 of a mile (515 meters) deep and the top of the plume is at 1/10 of a mile (180 meters) depth. ~ Brendan Philip / University of Washington

We look forward to doing our part in global warming and climate change.

You are welcome.

 

CO2 sensors video demo - mid-IR LEDs

Grab your QuiC SLED™ mid-infrared LED digital download package

Want more information about the QuiC SLED™ mid-infrared LED product line? Bookmark this post for future reference!

Click on each link to view the post, pdf, image or release. We will continue to update this page with sell sheets and other value-added content. Please note that our first mid-infrared LEDs are at the 4.25µm wavelength. We will continue to add wavelengths as we move forward. For more information about your specific applications and/or mid-infrared LED needs, contact us by emailing info @ THzDC.com or complete the Contact FormQuiC SLED mid-infrared LED

Data Sheets and Application Notes

Slides

Mid-Infrared LED QuiC SLED™ Video Demonstration

Click here to access the video demonstration of Mark Miller demonstrating the Mid-Infrared LED QuiC SLED™ at the Sensors Expo in June.

 

Items of Interest

QuiC SLED™ Video Demo

QuiC SLED™ Demonstration

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.

THz_QuiCSLED_demo from Mark Miller on Vimeo.

Terahertz Device Corporation announces the first mid-infrared LEDs of its new QuiC SLED™ product line

Salt Lake City — May 2014 — Terahertz Device Corporation has announced availability for the first devices of its QuiC SLED™ product line. The LEDs emit 4.25 µm wavelength light, with peak powers above 2 milliwatts. This new technology brings bright, fast-switching lights to the mid-wave infrared (MWIR) atmospheric window, and the emission peak of this first product overlaps the carbon dioxide absorption line. These lights enable and enhance applications in chemical and gas sensing, thermal imaging, night vision, spectroscopy, biophotonics, medical sensing, and communications.

“These first devices easily push past the milliwatt barrier for mid-infrared LEDs,” says CEO Mark Miller. “Truly frontier devices, they validate our LED technology. The QuiC SLED™ technologies position us to define the envelope for LED wavelength, power, and performance, throughout the mid-infrared spectrum.”

The devices are quantum interband-cascade superlattice light-emitting diodes, and the key technologies behind the QuiC SLED™product line cover mid-infrared wavelengths from about 3 µm to 15 µm. The company is developing and introducing devices across the mid-infrared spectrum, including many standard and custom wavelengths for which no other LED solutions are available. Compared to thermal, blackbody emitters, these LEDs have modulation frequencies more than a million times faster and do not require optical filter assemblies to select wavelengths. Compared to quantum cascade lasers and interband cascade lasers, these LEDs have broader lines to cover larger spectral ranges, they ensure eye-safe implementations, and they bring device and system cost savings.

 

About Terahertz Device Corporation

Terahertz Device Corporation develops, produces, and markets light sources and related technologies for applications across the infrared spectrum and terahertz frequency range. For more information visit the website www.thzdc.com or contact Sales@thzdc.com.

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