Protein adsorption enhanced radio-frequency heating of silica nanoparticles

Jarek Wosik; Rohit Pande; Leiming Xie; Dhivya Ketharnath; Srimeenakshi Srinivasan; Biana Godin

doi:10.1063/1.4816668

Protein adsorption enhanced radio-frequency heating of silica nanoparticles

Jarek Wosik, Rohit Pande, Leiming Xie, Dhivya Ketharnath, Srimeenakshi Srinivasan, Biana Godin

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Measurements of specific-absorption-rate (SAR) of silica 30, 50, and 100 nm nanoparticles (NP) suspended in water were carried out at 30 MHz in 7 kV/m radio-frequency (rf) electric field. Size dependent, NP-suspension interface related heating of silica NP was observed. To investigate a possible mechanism of heating, bovine serum albumin was adsorbed on the surface of silica NPs in suspension. It resulted in significant enhancement of SAR when compared to bare silica NPs. A calorimetric and rf loss model was used to calculate effective conductivity of silica NP with/without adsorbed albumin as a function of silica size and albumin concentration.

Original language	English (US)
Article number	043706
Journal	Applied Physics Letters
Volume	103
Issue number	4
DOIs	https://doi.org/10.1063/1.4816668
State	Published - Jul 22 2013

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Protein adsorption enhanced radio-frequency heating of silica nanoparticles",

abstract = "Measurements of specific-absorption-rate (SAR) of silica 30, 50, and 100 nm nanoparticles (NP) suspended in water were carried out at 30 MHz in 7 kV/m radio-frequency (rf) electric field. Size dependent, NP-suspension interface related heating of silica NP was observed. To investigate a possible mechanism of heating, bovine serum albumin was adsorbed on the surface of silica NPs in suspension. It resulted in significant enhancement of SAR when compared to bare silica NPs. A calorimetric and rf loss model was used to calculate effective conductivity of silica NP with/without adsorbed albumin as a function of silica size and albumin concentration.",

author = "Jarek Wosik and Rohit Pande and Leiming Xie and Dhivya Ketharnath and Srimeenakshi Srinivasan and Biana Godin",

note = "Funding Information: This research was partially supported by a GEAR research grant. B.G. acknowledges support from NIH U54CA143837 (CTO, PSOC) and R.P. thanks for his partial support through TMH/CPRiT (RP110262). We thank Chris Kuether for his input in building RCL setup.",

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AU - Wosik, Jarek

AU - Pande, Rohit

AU - Xie, Leiming

AU - Ketharnath, Dhivya

AU - Srinivasan, Srimeenakshi

AU - Godin, Biana

N1 - Funding Information: This research was partially supported by a GEAR research grant. B.G. acknowledges support from NIH U54CA143837 (CTO, PSOC) and R.P. thanks for his partial support through TMH/CPRiT (RP110262). We thank Chris Kuether for his input in building RCL setup.

PY - 2013/7/22

Y1 - 2013/7/22

N2 - Measurements of specific-absorption-rate (SAR) of silica 30, 50, and 100 nm nanoparticles (NP) suspended in water were carried out at 30 MHz in 7 kV/m radio-frequency (rf) electric field. Size dependent, NP-suspension interface related heating of silica NP was observed. To investigate a possible mechanism of heating, bovine serum albumin was adsorbed on the surface of silica NPs in suspension. It resulted in significant enhancement of SAR when compared to bare silica NPs. A calorimetric and rf loss model was used to calculate effective conductivity of silica NP with/without adsorbed albumin as a function of silica size and albumin concentration.

AB - Measurements of specific-absorption-rate (SAR) of silica 30, 50, and 100 nm nanoparticles (NP) suspended in water were carried out at 30 MHz in 7 kV/m radio-frequency (rf) electric field. Size dependent, NP-suspension interface related heating of silica NP was observed. To investigate a possible mechanism of heating, bovine serum albumin was adsorbed on the surface of silica NPs in suspension. It resulted in significant enhancement of SAR when compared to bare silica NPs. A calorimetric and rf loss model was used to calculate effective conductivity of silica NP with/without adsorbed albumin as a function of silica size and albumin concentration.

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Protein adsorption enhanced radio-frequency heating of silica nanoparticles

Abstract

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