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Volumn 358, Issue 1, 2011, Pages 47-53

Negligible absorption of radiofrequency radiation by colloidal gold nanoparticles

Author keywords

Colloidal solutions; Gold nanoparticles; Ionic conduction; Plasmon resonance; Radiofrequency heating

Indexed keywords

AU NANOPARTICLE; COLLOIDAL GOLD NANOPARTICLES; COLLOIDAL SOLUTIONS; DOMINANT MECHANISM; ELECTRICAL CONDUCTIVITY MEASUREMENTS; ELECTROLYTE SOLUTIONS; GOLD NANOPARTICLES; METAL NANOPARTICLES; PLASMON RESONANCE; QUANTITATIVE MEASUREMENT; RADIO FREQUENCIES; RADIO FREQUENCY HEATING; RADIO FREQUENCY RADIATION; RF ENERGY ABSORPTION; RF HEATING; RF-RADIATION; THERMAL CONVERSION;

EID: 79953325886     PISSN: 00219797     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jcis.2011.01.059     Document Type: Article
Times cited : (63)

References (35)
  • 16
    • 79953301654 scopus 로고    scopus 로고
    • Data Sheet of Gold Nanoparticle Colloidal Solutions, Ted Pella, Inc.
    • Data Sheet of Gold Nanoparticle Colloidal Solutions, Ted Pella, Inc. http://www.tedpella.com/gold_html/goldsols.htm.
  • 21
    • 79953327191 scopus 로고    scopus 로고
    • Gold Nanoparticle Reference Materials and their Characterization (RM 8011-8013).
    • V. Hackley, Nanoparticle Standards at NIST: Gold Nanoparticle Reference Materials and their Characterization (RM 8011-8013). http://www.srmors.nist.gov/orderingSRMs.cfm.
    • Nanoparticle Standards at NIST
    • Hackley, V.1
  • 22
    • 79953325014 scopus 로고    scopus 로고
    • D.R. Lide (Ed.), CRC Handbook of Chemistry and Physics, 87th ed., Taylor & Francis, New York, p. 6-15 & p. 12-39.
    • D.R. Lide (Ed.), CRC Handbook of Chemistry and Physics, 87th ed., Taylor & Francis, New York, 2006, p. 6-2, p. 6-15 & p. 12-39.
    • (2006) , pp. 6-2
  • 24
    • 79953319312 scopus 로고    scopus 로고
    • Considering that both stock and supernatant solutions show the same heating rate and that relatively low concentrations of solute and NPs are introduced to water, the heat capacity of the aqueous solutions (with or without Au-NP) is assumed to remain unchanged from that of water.
    • Considering that both stock and supernatant solutions show the same heating rate and that relatively low concentrations of solute and NPs are introduced to water, the heat capacity of the aqueous solutions (with or without Au-NP) is assumed to remain unchanged from that of water.
  • 30
    • 79953310201 scopus 로고    scopus 로고
    • The accuracy of impedance measurement with this setup degrades at the high frequency end: note the rapid falloff of the PL curve at ~20MHz in Fig. 6b. Also, the chemical resistance of aluminum may not be as good as that of gold, and the aluminum films (200nm thick) may form an oxide layer over time. Presence of a thin dielectric layer on electrode surface can affect the double layer capacitance. The effect of the interfacial layer capacitances associated with electrodes, however, becomes negligible in the high frequency regime (>1MHz: see Fig. 6c). Overall the valid range of extracting AC conductivity and dielectric constant with this setup is considered to be 1-10MHz.
    • The accuracy of impedance measurement with this setup degrades at the high frequency end: note the rapid falloff of the PL curve at ~20MHz in Fig. 6b. Also, the chemical resistance of aluminum may not be as good as that of gold, and the aluminum films (200nm thick) may form an oxide layer over time. Presence of a thin dielectric layer on electrode surface can affect the double layer capacitance. The effect of the interfacial layer capacitances associated with electrodes, however, becomes negligible in the high frequency regime (>1MHz: see Fig. 6c). Overall the valid range of extracting AC conductivity and dielectric constant with this setup is considered to be 1-10MHz.
  • 35
    • 79953306147 scopus 로고    scopus 로고
    • Note
    • In Refs. [32,33] (see supporting information therein), the microwave heating of a Au NP was estimated referring to the following formula taken from Ref. [34] (page 405): 4πμ0fFd0dH02, where f is the frequency, and F is a power transmission factor depending on the ratio of cylinder diameter (d) to skin depth (d0) of metal. Their estimation is flawed because the factor 4π×10-7 of the free-space permeability μ0 was omitted and also the power transmission F was erroneously read (it should be read at d/d0=1/80, not 80), causing the induction heating amount overestimated by ten orders of magnitude.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.