Using nonlinearity to enhance micro/nanosensor performance

Turner, Kimberly L.; Burgner, Christopher; Yie, Zi; Holtoff, Ellen

doi:10.1109/icsens.2012.6411564

Cited by 14 publications

(23 citation statements)

References 13 publications

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“…This data has been previously described using the bifurcation sweep tracking method. 19 MIP for CWA Detection. The integrated MIP for CWA detection was designed based on specific hydrogen bonding interactions with DMMP and have been demonstrated for gas phase sensing of the organophosphorus vapors produced by this analyte.…”

Section: Lock-in Amplifiermentioning

confidence: 99%

“…Experimental results demonstrate that noise-squeezing control for bifurcation sensing is a better sensing strategy than the bifurcation sweep method previously described. 19 It uses the statistics of the phase noise as a precursor to the bifurcation event, and the control time is less than 10 ms. The average time for a bifurcation sweep method to track a bifurcation event is 15 to 20 seconds, depending on sweep rate.…”

Section: Mip For Explosives Detection the Integrated Mip For Explosimentioning

confidence: 99%

“…16,17 In this work, molecularly imprinted xerogel thin films have demonstrated selectivity and stability in combination with a fixed-fixed beam MEMS cantilever. 18,19 Traditionally, mass sensing using MEMS resonators has been achieved based on the natural frequency shift due to an increase in resonator mass; however, noise has set the limit of detection for linear sensing. 20 As an alternative to using changes in the natural frequency, nonlinear dynamics induced by parametric excitation have led to successful cantilever-based sensor designs.…”

Section: Introductionmentioning

confidence: 99%

“…20 As an alternative to using changes in the natural frequency, nonlinear dynamics induced by parametric excitation have led to successful cantilever-based sensor designs. 19,[21][22][23] Under nonlinear operation, the sensor is driven parametrically at twice its natural resonant frequency. 24 This produces a bifurcation, which manifests as a sudden jump in the response amplitude.…”

Section: Introductionmentioning

confidence: 99%

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A molecularly imprinted polymer (MIP)-coated microbeam MEMS sensor for chemical detection

Holthoff

Hiller

et al. 2015

SPIE Proceedings

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Recently, microcantilever-based technology has emerged as a viable sensing platform due to its many advantages such as small size, high sensitivity, and low cost. However, microcantilevers lack the inherent ability to selectively identify hazardous chemicals (e.g., explosives, chemical warfare agents). The key to overcoming this challenge is to functionalize the top surface of the microcantilever with a receptor material (e.g., a polymer coating) so that selective binding between the cantilever and analyte of interest takes place. Molecularly imprinted polymers (MIPs) can be utilized as artificial recognition elements for target chemical analytes of interest. Molecular imprinting involves arranging polymerizable functional monomers around a template molecule followed by polymerization and template removal. The selectivity for the target analyte is based on the spatial orientation of the binding site and covalent or noncovalent interactions between the functional monomer and the analyte. In this work, thin films of sol-gel-derived xerogels molecularly imprinted for TNT and dimethyl methylphosphonate (DMMP), a chemical warfare agent stimulant, have demonstrated selectivity and stability in combination with a fixed-fixed beam microelectromechanical systems (MEMS)-based gas sensor. The sensor was characterized by parametric bifurcation noise-based tracking.

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Section: Lock-in Amplifiermentioning

confidence: 99%

Section: Mip For Explosives Detection the Integrated Mip For Explosimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A molecularly imprinted polymer (MIP)-coated microbeam MEMS sensor for chemical detection

Holthoff

Hiller

et al. 2015

SPIE Proceedings

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Section: Introductionmentioning

confidence: 99%

A Molecularly Imprinted Polymer (MIP)-Coated Microbeam MEMS Sensor for Chemical Detection

Holthoff¹,

Li²,

Hiller³

et al. 2015

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A reprint from Proc. of SPIE Vol. 9455 94550W-1.Approved for public release; distribution unlimited. NOTICES DisclaimersThe findings in this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents.Citation of manufacturer's or trade names does not constitute an official endorsement or approval of the use thereof.Destroy this report when it is no longer needed. Do not return it to the originator. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. ARL-RP-0536 PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY)Sep 2015 SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution unlimited. SUPPLEMENTARY NOTESA reprint from Proc. of SPIE Vol. 9455 94550W-1. ABSTRACTRecently, microcantilever-based technology has emerged as a viable sensing platform due to its many advantages such as small size, high sensitivity, and low cost. However, microcantilevers lack the inherent ability to selectively identify hazardous chemicals (e.g., explosives, chemical warfare agents). The key to overcoming this challenge is to functionalize the top surface of the microcantilever with a receptor material (e.g., a polymer coating) so that selective binding between the cantilever and analyte of interest takes place. Molecularly imprinted polymers (MIPs) can be utilized as artificial recognition elements for target chemical analytes of interest. Molecular imprinting involves arranging polymerizable functional monomers around a template molecule followed by polymerization and template removal. The selectivity for the target analyte is based on the spatial orientation of the binding site and covalent or noncovalent interactions between the functional monomer and the analyte. In this work, thin films of sol-gel-derived xerogels molecularly imprinted for TNT and dimethyl methylphosphonate (DMMP), a chemical warfare agent stimulant, have demonstrated selectivity and stability in combination with a fixed-fixed beam microelectromechanical systems (MEMS)-based gas sensor. The sensor was characterized by parametric bifurcation noise-based tracking. ABSTRACT Recently, microcantilever-based technology has emerged as a viable sensing platform due to its many advantages such as small size, high sensitivity, and low cost. However, microcantilevers lack the inherent ability to selectively identify hazardous chemicals (e.g., explosives, chemical warfare agents). The key to overcoming this challenge is to functionalize the top surface of the microcantilever with a receptor material (e.g., a polymer coating) so that selective binding between the cantilever and analyte of interest takes place. Molecularly imprinted polymers (MIPs) can be utilized as artificial recognition elements for target chemical analytes of interest. Molecular...

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Nonlinear Dynamics of Resonant Microelectromechanical System (MEMS): A Review

Chakraborty

Jani

2020

Mechanical Sciences

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Using nonlinearity to enhance micro/nanosensor performance

Cited by 14 publications

References 13 publications

A molecularly imprinted polymer (MIP)-coated microbeam MEMS sensor for chemical detection

A molecularly imprinted polymer (MIP)-coated microbeam MEMS sensor for chemical detection

A Molecularly Imprinted Polymer (MIP)-Coated Microbeam MEMS Sensor for Chemical Detection

Nonlinear Dynamics of Resonant Microelectromechanical System (MEMS): A Review

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