skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Methylated Poly(ethylene)imine Modified Capacitive Micromachined Ultrasonic Transducer for Measurements of CO2 and SO2 in Their Mixtures

Journal Article · · Sensors
DOI:https://doi.org/10.3390/s19143236· OSTI ID:1544579

A gravimetric gas detection device based on surface functionalized Capacitive Micromachined Ultrasound Transducers (CMUTs) was designed, fabricated and tested for detection of carbon dioxide (CO2) and sulfur dioxide (SO2) mixtures in nitrogen. The created measurement setup of continuous data collection, integrated with an in-situ Fourier Transform Infrared (FT-IR) spectroscopy, allows for better understanding of the mechanisms and molecular interactions with the sensing layer (methylated poly(ethylene)imine) and its need of surface functionalization for multiple gas detection. During experimentation with CO2 gases, weak molecular interactions were observed in spectroscopy data. Linear sensor response to frequency shift was observed with CO2 concentrations ranging from 0.16 vol % to 1 vol %. Moreover, the Raman and FT-IR spectroscopy data showed much stronger SO2 and the polymer interactions, molecules were bound by stronger forces and irreversibly changed the polymer film properties. However, the sensor change in resonance frequency in the tested region of 1 vol % to 5 vol % SO2 showed a linear response. This effect changed not only the device resonance frequency but also affected the magnitude of electroacoustic impedance which was used for differentiating the gas mixture of CO2, SO2, in dry N2.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME); Georgia Institute of Technology, Atlanta, GA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0012577
OSTI ID:
1544579
Alternate ID(s):
OSTI ID: 1611882
Journal Information:
Sensors, Journal Name: Sensors Vol. 19 Journal Issue: 14; ISSN 1424-8220
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

References (66)

A Capacitive Micromachined Ultrasonic Transducer-Based Resonant Sensor Array for Portable Volatile Organic Compound Detection with Wireless Systems journal March 2019
Capacitive micromachined ultrasonic transducer (CMUT) as a chemical sensor for DMMP detection journal December 2011
Thermodynamics of CO2 Adsorption on Polyethyleneimine Mesoporous Silica and Activated Carbon journal January 2017
The mechanics of spin coating of polymer films journal January 1988
AFM, SECM and QCM as useful analytical tools in the characterization of enzyme-based bioanalytical platforms journal January 2010
Carbon Dioxide Capture from the Air Using a Polyamine Based Regenerable Solid Adsorbent journal December 2011
Fourier transform infrared spectrometry journal October 1983
Void-free direct bonding of CMUT arrays with single crystalline plates and pull-in insulation conference July 2013
A Low-Noise Oscillator based on a Multi-Membrane CMUT for High Sensitivity Resonant Chemical Sensors conference January 2009
Thin-film bulk acoustic resonators and filters using ZnO and lead-zirconium-titanate thin films journal April 2001
Nanomechanical gas sensing with nonlinear resonant cantilevers journal September 2014
Fabricating capacitive micromachined ultrasonic transducers with wafer-bonding technology journal April 2003
A capacitive micromachined ultrasonic transducer (CMUT) array as a low-power multi-channel volatile organic compound (VOC) sensor conference November 2015
Enhanced sensitivity of SAW gas sensor coated molecularly imprinted polymer incorporating high frequency stability oscillator journal August 2007
Functionalization layers for CO2 sensing using capacitive micromachined ultrasonic transducers journal November 2012
Greenhouse Gas Molecule CO 2 Detection Using a Capacitive Micromachined Ultrasound Transducer journal June 2016
Vibrational frequencies of sulfur dioxide. Determination and application journal May 1970
A room temperature supramolecular-based quartz crystal microbalance (QCM) methane gas sensor journal August 2009
Gas sensors based on gravimetric detection—A review journal December 2011
Chemical etch rates in HF solutions as a function of thickness of thermal SiO 2 and buried SiO 2 formed by oxygen implantation journal May 1991
Techniques of cryogenic reactive ion etching in silicon for fabrication of sensors
  • Henry, M. David; Welch, Colin; Scherer, Axel
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 27, Issue 5 https://doi.org/10.1116/1.3196790
journal September 2009
Distinguishing chemicals using CMUT chemical sensor array and artificial neural networks conference September 2014
Etching SiO[sub 2] Films in Aqueous 0.49% HF journal January 1996
Gas chemical sensitivity of a CMOS MEMS cantilever functionalized via evaporation driven assembly journal May 2014
An 8-channel CMUT chemical sensor array on a single chip conference September 2017
Cryogenic etch process development for profile control of high aspect-ratio submicron silicon trenches
  • Pruessner, Marcel W.; Rabinovich, William S.; Stievater, Todd H.
  • Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 25, Issue 1 https://doi.org/10.1116/1.2402151
journal January 2007
A Low-Power Wireless Multichannel Gas Sensing System Based on a Capacitive Micromachined Ultrasonic Transducer (CMUT) Array journal February 2019
Technology-driven layer-by-layer assembly of nanofilms journal April 2015
Surface micromachined capacitive ultrasonic transducers journal May 1998
Investigation into Mass Loading Sensitivity of Sezawa Wave Mode-Based Surface Acoustic Wave Sensors journal February 2013
Combined colorimetric and gravimetric CMUT sensor for detection of benzyl methyl ketone journal December 2018
Fabrication of nanoelectromechanical systems via the integration of high surface area glancing angle deposition thin films journal May 2014
A novel equivalent circuit model for CMUTs conference September 2009
Progresses on the theory and application of quartz crystal microbalance journal September 2016
Study of the CMUT operation in microfluidic application conference October 2012
CO 2 and SO 2 Interactions with Methylated Poly(ethylenimine)-Functionalized Capacitive Micromachined Ultrasonic Transducers (CMUTs): Gas Sensing and Degradation Mechanism journal June 2019
Fabricating capacitive micromachined ultrasonic transducers with direct wafer-bonding and LOCOS technology conference January 2008
Fabrication and characterization of surface micromachined capacitive ultrasonic immersion transducers journal March 1999
Clouds unfazed by haze journal June 2017
Etch rates for micromachining processing-part II journal December 2003
CMUT as a chemical sensor for DMMP detection conference May 2008
Performance of polymer solar cells fabricated by dip coating process journal April 2012
Resonant gravimetric immunosensing based on capacitive micromachined ultrasound transducers journal April 2014
Analytically calculating membrane displacement and the equivalent circuit model of a circular CMUT cell conference November 2008
A battery-operated wireless multichannel gas sensor system based on a capacitive micromachined ultrasonic transducer (CMUT) array conference October 2016
Linear and nonlinear equivalent circuit modeling of CMUTs journal December 2005
Spin coating of very thin polymer films journal March 1994
Agriculture and greenhouse gases, a common tragedy. A review journal September 2012
A Multichannel Oscillator for a Resonant Chemical Sensor System journal October 2014
Greenhouse gas mitigation potentials in the livestock sector journal March 2016
Carbon Dioxide Absorption by Polyethylenimine-Functionalized Nanocarbons: A Kinetic Study journal January 2015
Molecular blends of methylated-poly(ethylenimine) and amorphous porous organic cages for SO 2 adsorption journal January 2018
Development of a Room Temperature SAW Methane Gas Sensor Incorporating a Supramolecular Cryptophane A Coating journal January 2016
Adsorption of CO<sub>2</sub> on Polyethyleneimine 10k—<i>Mesoporous silica</i> Sorbent: XPS and TGA Studies journal January 2015
Room Temperature Quartz Crystal Microbalance-Based CO Sensor Using Commercial Piezoelectric Crystal Modified with Carbon Nanostructures journal July 2015
Combined colorimetric and gravimetric CMUT sensor for detection of phenylacetone conference September 2017
The mechanism of HF/H[sub 2]O chemical etching of SiO[sub 2] journal January 2002
Fabrication of Capacitive Micromachined Ultrasonic Transducers via Local Oxidation and Direct Wafer Bonding journal February 2011
Label-Free Glucose Detection Using Cantilever Sensor Technology Based on Gravimetric Detection Principles journal January 2013
Ink-jet printing of polymers ? from single dots to thin film libraries journal January 2004
CMUT for high sensitivity greenhouse gas sensing conference October 2015
A low-power gas sensor for environmental monitoring using a capacitive micromachined ultrasonic transducer conference November 2014
Design and Analysis of Film Bulk Acoustic Resonator (FBAR) Filter for RF Applications journal January 2012
Spray coating methods for polymer solar cells fabrication: A review journal November 2015
Supported Polytertiary Amines: Highly Efficient and Selective SO 2 Adsorbents journal January 2014
Film bulk acoustic resonators (FBARs) as biosensors: A review journal September 2018