Chemo-mechanical interactions between adsorbed molecules and thin elastic films

Begley, Matthew R.; Utz, Marcel; Komaragiri, Uday

doi:10.1016/j.jmps.2005.03.006

Cited by 38 publications

(44 citation statements)

References 12 publications

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“…[112][113][114] Several papers have explored out-of-plane buckling as a prospective sensing mechanism. [115][116][117][118][119] It should also be mentioned that theoretical studies have recognized buckling as a possible sensing mechanism that is incredibly sensitive, but has a very small sensing range due to the discrete nature of buckling. [115,116] Sensitivity could be an order of magnitude higher than that of conventional linear transduction, such as microcantilevers, with micrometer deflections over incredibly small ranges.…”

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

“…[115][116][117][118][119] It should also be mentioned that theoretical studies have recognized buckling as a possible sensing mechanism that is incredibly sensitive, but has a very small sensing range due to the discrete nature of buckling. [115,116] Sensitivity could be an order of magnitude higher than that of conventional linear transduction, such as microcantilevers, with micrometer deflections over incredibly small ranges. [115] Much of the enhanced response can be attributed to stress that builds prior to the critical buckling point, which acts to amplify the response.…”

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

“…[115,116] Sensitivity could be an order of magnitude higher than that of conventional linear transduction, such as microcantilevers, with micrometer deflections over incredibly small ranges. [115] Much of the enhanced response can be attributed to stress that builds prior to the critical buckling point, which acts to amplify the response. In fact, it is suggested that such huge deflections could likely be transduced optically, thereby eliminating the need for expensive photodetector-based methods.…”

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

“…In fact, it is suggested that such huge deflections could likely be transduced optically, thereby eliminating the need for expensive photodetector-based methods. [115] But a major issue regarding this approach is to keep the residual strain levels in this critical sensitivity region.…”

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

See 3 more Smart Citations

Bioinspired Material Approaches to Sensing

McConney¹,

Anderson²,

Brott

et al. 2009

Adv Funct Materials

102

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Bioinspired design is an engineering approach that involves working to understand the design principles and strategies employed by biology in order to benefit the development of engineered systems. From a materials perspective, biology offers an almost limitless source of novel approaches capable of arousing innovation in every aspect of materials, including fabrication, design, and functionality. Here, recent and ongoing work on the study of bioinspired materials for sensing applications is presented. Work presented includes the study of fish flow receptor structures and the subsequent development of similar structures to improve flow sensor performance. The study of spider air‐flow receptors and the development of a spider‐inspired flexible hair is also discussed. Lastly, the development of flexible membrane based infrared sensors, highly influenced by the fire beetle, is presented, where a pneumatic mechanism and a thermal‐expansion stress‐mediated buckling‐based mechanism are investigated. Other areas that are discussed include novel biological signal filtering mechanisms and reciprocal benefits offered through applying the biology lessons to engineered systems.

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Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

Section: Polymeric Thermal-buckling-based Sensor Arraysmentioning

confidence: 99%

See 2 more Smart Citations

Bioinspired Material Approaches to Sensing

McConney¹,

Anderson²,

Brott

et al. 2009

Adv Funct Materials

102

View full text Add to dashboard Cite

show abstract

“…In addition, a microcantilever-based DNA sensor typically is a multilayered structure, including a DNA-, Si-or SiNx-, Au-, Cr-or Ti-layer in a buffer solution environment. Recently, some theoretical methods have been presented to understand this mechanical behavior, such as liquid crystal theory [10,11], flexoelectric membrane theory [12], surface energy [13] and classical density functional theory [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Conformational Entropy on the Nanomechanics of Microcantilever-Based Single-Stranded DNA Sensors

Tan

Zhang

2014

Entropy

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An entropy-controlled bending mechanism is presented to study the nanomechanics of microcantilever-based single-stranded DNA (ssDNA) sensors. First; the conformational free energy of the ssDNA layer is given with an improved scaling theory of thermal blobs considering the curvature effect; and the mechanical energy of the non-biological layer is described by Zhang's two-variable method for laminated beams. Then; an analytical model for static deflections of ssDNA microcantilevers is formulated by the principle of minimum energy. The comparisons of deflections predicted by the proposed model; Utz-Begley's model and Hagan's model are also examined. Numerical results show that the conformational entropy effect on microcantilever deflections cannot be ignored; especially at the conditions of high packing density or long chain systems; and the variation of deflection predicted by the proposed analytical model not only accords with that observed in the related experiments qualitatively; but also appears quantitatively closer to the experimental values than that by the preexisting models. In order to improve the sensitivity of static-mode biosensors; it should be as small as possible to reduce the substrate stiffness.

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Potential of epitaxial silicon carbide microbeam resonators for chemical sensing

Kermany

Bennett

Valenzuela

et al. 2016

Phys. Status Solidi A

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Epitaxial silicon carbide is promising for chemical resonant sensing applications due to its excellent mechanical, thermal, and biochemical properties. This paper reviews six important aspects of (i) silicon carbide heteroepitaxial growth and residual stress; (ii) silicon carbide beam resonators, resonator types, and fabrication processes; (iii) sensing principles, dynamic sensing mechanical performance, and transduction techniques; (iv) damping parameters; (v) mean stress influence on mass sensitivity of SiC flexural microbridge resonators; and (vi) gradient stress impact on SiC cantilever static behavior. The primary goal is to suggest the means to improve the mass sensitivity parameter and application range of epitaxial silicon carbide microbeam resonators and benchmark it with other relevant materials.

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Chemo-mechanical interactions between adsorbed molecules and thin elastic films

Cited by 38 publications

References 12 publications

Bioinspired Material Approaches to Sensing

Bioinspired Material Approaches to Sensing

Effect of Conformational Entropy on the Nanomechanics of Microcantilever-Based Single-Stranded DNA Sensors

Potential of epitaxial silicon carbide microbeam resonators for chemical sensing

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