Electric‐Field‐Assisted Protein Transport, Capture, and Interferometric Sensing in Carbonized Porous Silicon Films

Chen, Michelle Y.; Klunk, Margaret D.; Diep, Vinh; Sailor, Michael J.

doi:10.1002/adma.201102090

Cited by 25 publications

(26 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Porous silicon is a versatile material with uses in a broad range of technological fields including energetic materials [1][2][3][4], and a variety of sensing applications [5][6][7]. Several of its material characteristics, including high surface area, energy density, and MEMS compatibility make PS a particularly interesting candidate for the field of energetic materials.…”

Section: Introductionmentioning

confidence: 99%

Combustion and material characterization of porous silicon nanoenergetics

Piekiel

Churaman

Morris

et al. 2013

2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS)

View full text Add to dashboard Cite

Certain porous silicon (PS) structures have demonstrated energetic characteristics when mixed with an appropriate oxidizer [1][2][3][4]. However, limited studies on the effect of PS structure on its combustion have been performed. This work investigates how various material properties of PS films; surface area, porosity and pore size, affect the combustion process. With pore sizes in the range of 2.6-5.2 nm and surface area reaching over 900 m 2 /g, these materials are capable of considerably fast reactions. Combustion characterization is performed through high speed imaging at a rate of 930,000 frames per second. Propagation speeds in the current study range from 300 -1950 m/s, and some relationships between the pore characteristics and the propagation velocity are observed.A portion of the silicon is covered by a layered Si 3 N 4 /chrome/platinum/gold section that functions as an

show abstract

Section: Introductionmentioning

confidence: 99%

Combustion and material characterization of porous silicon nanoenergetics

Piekiel

Churaman

Morris

et al. 2013

2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS)

View full text Add to dashboard Cite

show abstract

“…[33][34][35] In addition, the surface chemistry of PSi can be modified easily. [36][37][38] Among the different surface chemistries, thermally carbonized PSi displays a highly increased electrical conductivity, 39,40 which enables, along with the possibility of fabricating nano-and microparticles, the preparation of PSi-based solution-processable inks needed for making printable devices. In the current study, the feasibility of PSi particles for printed humidity sensor production is explored.…”

mentioning

confidence: 99%

Porous silicon micro- and nanoparticles for printed humidity sensors

Jalkanen

Mäkilä

Määttänen

et al. 2012

Applied Physics Letters

View full text Add to dashboard Cite

Accurate measurements of water vapor transmission through high-performance barrier layers Rev. Sci. Instrum. 83, 075118 (2012) Quantitative calcium resistivity based method for accurate and scalable water vapor transmission rate measurement Rev. Sci. Instrum. 82, 085101 (2011) Humidity response properties of a potentiometric sensor using LaF3 thin film as the solid electrolyte Rev. Sci. Instrum. 82, 083901 (2011) New Products Rev. Sci. Instrum. 82, 029501 (2011) Biologically inspired humidity sensor based on three-dimensional photonic crystals

show abstract

“…Importantly, white light reflectance-based interferometry constitutes a robust optical transduction method in PSi systems, making them powerful label-free detectors for various biomolecules. [15][16][17] However, PSi biosensors suffer from practical limitations related to the single-mode optical sensing mechanism, which mainly include poor sensitivity (typical limit of detection in the micromolar range 14,18 ) and lack of selectivity (for example, distinguishing between different analytes and the detection of more than one target analyte at once 14,19 ). Extensive research efforts have been directed toward enhancing the sensing properties of PSi-based systems.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a nanostructured porous silicon/carbon dot-hybrid for orthogonal molecular detection

et al. 2018

View full text Add to dashboard Cite

A new hybrid guest-host material consisting of a Fabry-Pérot porous silicon (PSi) thin film, a nanostructured high surface-area matrix, and encapsulated fluorescent carbon quantum dots (C-dots) is described. The hybrid is synthesized by a facile in situ pyrolysis treatment of the carbonaceous precursor incorporated within the nanoscale pores of the inorganic host. The effects of nanoconfinement on the integrity of the C-dots and their optical properties are characterized. We show that the resulting hybrid allows for label-free optical detection of target molecules using two orthogonal modalities, that is, the white-light reflectivity of the PSi matrix and the fluorescence of the confined C-dots, and these two signals can be observed and collected simultaneously. The resulting hybrid system exhibits superior sensing performance in comparison with that of the individual components. Notably, we demonstrate that the confined C-dots exhibit greater sensitivity toward various analytes as well as an improved linear response, thus providing evidence of the impact of the host nanoscale porous scaffold on the optical properties of the C-dots. Moreover, we show that this orthogonal detection scheme increases the dynamic range of the sensor and minimizes falsenegative results.

show abstract

Electric‐Field‐Assisted Protein Transport, Capture, and Interferometric Sensing in Carbonized Porous Silicon Films

Cited by 25 publications

References 55 publications

Combustion and material characterization of porous silicon nanoenergetics

Combustion and material characterization of porous silicon nanoenergetics

Porous silicon micro- and nanoparticles for printed humidity sensors

Synthesis and characterization of a nanostructured porous silicon/carbon dot-hybrid for orthogonal molecular detection

Contact Info

Product

Resources

About