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Surface Plasmon Resonance of Noble Metal Nanoparticles in Thin Film Dielectric Matrices

Permanent Link: http://ncf.sobek.ufl.edu/NCFE003695/00001

Material Information

Title: Surface Plasmon Resonance of Noble Metal Nanoparticles in Thin Film Dielectric Matrices
Physical Description: Book
Language: English
Creator: Ruther, Rose
Publisher: New College of Florida
Place of Publication: Sarasota, Fla.
Creation Date: 2006
Publication Date: 2006

Subjects

Subjects / Keywords: Surface Plasmon Resonance
Nanoparticles
Thin Films
Genre: bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract: The photo-modification of gold and silver nanoparticles in silica thin film matrices was studied. The films were deposited by RF magnetron cosputtering and annealed between 650oC and 950oC to promote particle growth. The films were modified with the second and fourth harmonics of a Nd:YAG laser at 532 and 266 nm with typical fluences of 50 and 75 mJ/cm2. Mie theory in the quasi-static approximation was used to estimate average particle sizes from the width of the surface plasmon resonance (SPR) in the optical absorption spectra. Average particle size and particle size distribution were determined directly from transmission electron micrographs (TEM). The particle size distribution was found to follow a bimodal lognormal distribution before irradiation and a single narrower lognormal distribution after laser treatment. The average size determined by TEM was found to be much larger than that estimated from the SPR. This may reflect the difficulty in counting very small particles in TEM images and/or the need to modify the existing Mie model to include additional damping terms due to particle/matrix interactions. Laser treatment of silver particles significantly reduced the average size and narrowed the overall size distribution. Laser treatment of gold particles only significantly reduced the average size at higher fluences which damaged the film.
Statement of Responsibility: by Rose Ruther
Thesis: Thesis (B.A.) -- New College of Florida, 2006
Electronic Access: RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE
Bibliography: Includes bibliographical references.
Source of Description: This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Local: Faculty Sponsor: Sendova, Mariana

Record Information

Source Institution: New College of Florida
Holding Location: New College of Florida
Rights Management: Applicable rights reserved.
Classification: local - S.T. 2006 R9
System ID: NCFE003695:00001

Permanent Link: http://ncf.sobek.ufl.edu/NCFE003695/00001

Material Information

Title: Surface Plasmon Resonance of Noble Metal Nanoparticles in Thin Film Dielectric Matrices
Physical Description: Book
Language: English
Creator: Ruther, Rose
Publisher: New College of Florida
Place of Publication: Sarasota, Fla.
Creation Date: 2006
Publication Date: 2006

Subjects

Subjects / Keywords: Surface Plasmon Resonance
Nanoparticles
Thin Films
Genre: bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract: The photo-modification of gold and silver nanoparticles in silica thin film matrices was studied. The films were deposited by RF magnetron cosputtering and annealed between 650oC and 950oC to promote particle growth. The films were modified with the second and fourth harmonics of a Nd:YAG laser at 532 and 266 nm with typical fluences of 50 and 75 mJ/cm2. Mie theory in the quasi-static approximation was used to estimate average particle sizes from the width of the surface plasmon resonance (SPR) in the optical absorption spectra. Average particle size and particle size distribution were determined directly from transmission electron micrographs (TEM). The particle size distribution was found to follow a bimodal lognormal distribution before irradiation and a single narrower lognormal distribution after laser treatment. The average size determined by TEM was found to be much larger than that estimated from the SPR. This may reflect the difficulty in counting very small particles in TEM images and/or the need to modify the existing Mie model to include additional damping terms due to particle/matrix interactions. Laser treatment of silver particles significantly reduced the average size and narrowed the overall size distribution. Laser treatment of gold particles only significantly reduced the average size at higher fluences which damaged the film.
Statement of Responsibility: by Rose Ruther
Thesis: Thesis (B.A.) -- New College of Florida, 2006
Electronic Access: RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE
Bibliography: Includes bibliographical references.
Source of Description: This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Local: Faculty Sponsor: Sendova, Mariana

Record Information

Source Institution: New College of Florida
Holding Location: New College of Florida
Rights Management: Applicable rights reserved.
Classification: local - S.T. 2006 R9
System ID: NCFE003695:00001

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