Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > CEA-Leti Develops Tiny Photoacoustic-Spectroscopy System For Detecting Chemicals & Gases: Paper at Photonics West to Present Detector that Could Cost 10x Less Than Existing Systems and Prompt Widespread Use of the Technology

Abstract:
Leti, an institute of CEA-Tech, has developed a photoacoustic spectroscopy technology for monitoring dangerous chemical emissions and traces of gas that could reduce the cost and the size these systems by a factor of 10 or more compared to existing tools.

CEA-Leti Develops Tiny Photoacoustic-Spectroscopy System For Detecting Chemicals & Gases: Paper at Photonics West to Present Detector that Could Cost 10x Less Than Existing Systems and Prompt Widespread Use of the Technology

San Francisco, CA | Posted on February 4th, 2020

To be presented in an invited paper at Photonics West 2020 titled “Micro PA detector: pushing the limits of mid-IR photoacoustic spectroscopy integrated on silicon”, the detector also provides high immunity to external noise and high sensitivity and selectivity.



Photoacoustic (PA) spectroscopy is one of the most sensitive techniques available for monitoring dangerous chemical emissions and traces of gas. Coupled with cascade lasers, this technology is used in a large number of application fields, from industrial control to emission monitoring and biomedical analyses. But mass production and widespread use of such systems will require smaller footprints and lower manufacturing costs.



Over the past six years, CEA-Leti has developed different versions of miniaturized photoacoustic cells and demonstrated the detection of gas traces with a tiny silicon based-PA cell. One drawback, however, was that this system relied on commercial MEMS microphones. Even if these components are reliable and meet some performance requirements, they are not dedicated to photoacoustic gas detection, or easily integrated into a fabrication process flow.



CEA-Leti’s new microPA technology combines a fully integrated MEMS microphone and mid-infrared photonics built by stacking two 200 mm Si wafers. A sensor wafer includes the microphone made of a MEMS mechanical diaphragm and nanometric piezoresistive gauges together with capillaries and fluidic ports. The second wafer, a cap wafer, includes the PA cell, the expansion volume, SiGe waveguides guiding the light into the PA cell, and electric contacts.



“The specific design of the PA cell allows increased immunity to external noise and to the variation of measurement conditions,” said Jean-Guillaume Coutard, the lead author of the paper. “This result stems from CEA-Leti’s proprietary technology for the microphone fabrication and it opens the way for the integration of these devices into portable detection devices.”



Silicon photonics leverages the advantages of high-performance CMOS technology, providing low-cost mass manufacturing, high-fidelity reproduction of designs, and access to high-refractive index contrasts that enable high-performance nanophotonics.



CEA-Leti’s microPA technology builds on the EU-sponsored REDFINCH project, a consortium of eight partners that are using photonic components at mid-infrared wavelengths to develop compact chemical sensors for both gas and liquid applications. Specific targeted applications include process gas analysis in refineries, gas leak detection in petrochemical plants, and milk-protein analysis for the dairy industry. CEA-Leti is coordinating that project.

####

About Leti
Leti, a technology research institute at CEA Tech, is a global leader in miniaturization technologies enabling smart, energy-efficient and secure solutions for industry. Founded in 1967, Leti pioneers micro-& nanotechnologies, tailoring differentiating applicative solutions for global companies, SMEs and startups. Leti tackles critical challenges in healthcare, energy and digital migration. From sensors to data processing and computing solutions, Leti’s multidisciplinary teams deliver solid expertise, leveraging world-class pre-industrialization facilities. With a staff of more than 1,900, a portfolio of 2,700 patents, 91,500 sq. ft. of cleanroom space and a clear IP policy, the institute is based in Grenoble, France, and has offices in Silicon Valley and Tokyo. Leti has launched 60 startups and is a member of the Carnot Institutes network. Follow us on www.leti-cea.com and @CEA_Leti.

Follow us on www.leti.fr/en and @CEA_Leti.



CEA Tech is the technology research branch of the French Alternative Energies and Atomic Energy Commission (CEA), a key player in innovative R&D, defence & security, nuclear energy, technological research for industry and fundamental science, identified by Thomson Reuters as the second most innovative research organization in the world. CEA Tech leverages a unique innovation-driven culture and unrivalled expertise to develop and disseminate new technologies for industry, helping to create high-end products and provide a competitive edge.

For more information, please click here

Contacts:
Sergio Nicoletti



+33 438 780 289

+33 786 353 272



Press Contact

Agency

+33 6 74 93 23 47

Copyright © Leti

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

New method in the fight against forever chemicals September 13th, 2024

Energy transmission in quantum field theory requires information September 13th, 2024

Breakthrough in proton barrier films using pore-free graphene oxide: Kumamoto University researchers achieve new milestone in advanced coating technologies September 13th, 2024

Quantum researchers cause controlled ‘wobble’ in the nucleus of a single atom September 13th, 2024

Possible Futures

Rice research could make weird AI images a thing of the past: New diffusion model approach solves the aspect ratio problem September 13th, 2024

Giving batteries a longer life with the Advanced Photon Source: New research uncovers a hydrogen-centered mechanism that triggers degradation in the lithium-ion batteries that power electric vehicles September 13th, 2024

NYU Abu Dhabi researchers develop novel covalent organic frameworks for precise cancer treatment delivery: NYU Abu Dhabi researchers develop novel covalent organic frameworks for precise cancer treatment delivery September 13th, 2024

New discovery aims to improve the design of microelectronic devices September 13th, 2024

MEMS

Bosch launches longevity program for industrial and IoT applications: High-performance accelerometer, IMU and pressure sensor with 10-year availability July 23rd, 2020

MEMS & Sensors Executive Congress Technology Showcase Finalists Highlight Innovations in Automotive, Biomedical and Consumer Electronics: MSIG MEMS & Sensors Executive Congress – October 22-24, 2019, Coronado, Calif. October 1st, 2019

ULVAC Launches Revolutionary PZT Piezoelectric Thin-film Process Technology and HVM Solution for MEMS Sensors/Actuators: Enabling Reliable, High-quality Film Production for Next Generation Devices August 16th, 2019

New Video Highlights Specific Topics Sought in Call for Papers for the 2019 IEEE International Electron Devices Meeting (IEDM) June 13th, 2019

Sensors

Groundbreaking precision in single-molecule optoelectronics August 16th, 2024

Innovative sensing platform unlocks ultrahigh sensitivity in conventional sensors: Lan Yang and her team have developed new plug-and-play hardware to dramatically enhance the sensitivity of optical sensors April 5th, 2024

$900,000 awarded to optimize graphene energy harvesting devices: The WoodNext Foundation's commitment to U of A physicist Paul Thibado will be used to develop sensor systems compatible with six different power sources January 12th, 2024

A color-based sensor to emulate skin's sensitivity: In a step toward more autonomous soft robots and wearable technologies, EPFL researchers have created a device that uses color to simultaneously sense multiple mechanical and temperature stimuli December 8th, 2023

Discoveries

Energy transmission in quantum field theory requires information September 13th, 2024

Breakthrough in proton barrier films using pore-free graphene oxide: Kumamoto University researchers achieve new milestone in advanced coating technologies September 13th, 2024

Quantum researchers cause controlled ‘wobble’ in the nucleus of a single atom September 13th, 2024

New nanomaterial could transform how we visualise fingerprints: Innovative nanomaterials have the potential to revolutionise forensic science, particularly in the detection of latent (non-visible) fingermarks September 13th, 2024

Announcements

Giving batteries a longer life with the Advanced Photon Source: New research uncovers a hydrogen-centered mechanism that triggers degradation in the lithium-ion batteries that power electric vehicles September 13th, 2024

NYU Abu Dhabi researchers develop novel covalent organic frameworks for precise cancer treatment delivery: NYU Abu Dhabi researchers develop novel covalent organic frameworks for precise cancer treatment delivery September 13th, 2024

New discovery aims to improve the design of microelectronic devices September 13th, 2024

New method in the fight against forever chemicals September 13th, 2024

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project