Self-Assembled Thin Films: Optical Characterization

Research output: Chapter in Book/Report/Conference proceedingChapterAcademic

Abstract

Many different materials with truly new physical and chemical properties, consisting of controllably deposited colloid particles, are being developed. Particles with a variety of intrinsic properties are used, their sizes varying over at least three orders of magnitude. For photonic band gap materials, particle sizes are in the (sub)micron range, whereas for magnetic applications, such as ultra-high-density storage devices, they are in the low-nanometer range. A prerequisite for studying colloidal systems is the ability to characterize them unambiguously under relevant conditions. Among the large number of methods available for characterizing colloids and their superstructures, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are by far the most popular. For both very small as well as relatively large particles these are the most employed ex situ techniques. The use of various scanning probe microscopies - atomic force microscopy (AFM), scanning tunneling microscopy (STM), and magnetic force microscopy (MFM) - among colloid scientists is increasing; with these techniques experiments are also typically performed ex situ. , In fact, only optical methods have been employed in situ. For larger colloids, imaging techniques such as conventional or confocal microscopy are used. For sizes much smaller than the wavelength of light, such as with gold nanoparticles, only nonimaging (lateral averaging) in situ techniques are available. These include primarily ultraviolet/visible (UV/vis) absorption spectroscopy and also optical reflection techniques such as reflectometry and ellipsometry. The major advantage of ellipsometry as compared to reflectometry is its sensitivity to very small perturbations at an interface. Not only the deposition process but also the drying processes of (nano)colloidal particles at a solid-liquid interface can be studied. However, both the in situ and ex situ capabilities of the aforementioned reflection techniques depend on an unambiguous interpretation of recorded optical spectra.
Original languageUndefined
Title of host publicationEncyclopedia of Nanoscience and Nanotechnology
EditorsJames A. Schwarz, Cristian I. Contescu, Karol Putyera
Place of PublicationNew York
PublisherMarcel Dekker
Pages3361-3371
Number of pages3200
ISBN (Print)0-8247-4797-6
DOIs
Publication statusPublished - 2004

Publication series

Name
PublisherMarcel Dekker

Keywords

  • Effective medium theory
  • Optical characterization
  • METIS-220962
  • IR-75160
  • Colloid deposition
  • Image dipoles
  • Metal nanocrystals
  • Ellipsometry
  • Single particle polarizability
  • Size effects
  • Self-Assembly
  • Spatial distribution of nanoparticles

Cite this

Wormeester, H., Kooij, E. S., & Poelsema, B. (2004). Self-Assembled Thin Films: Optical Characterization. In J. A. Schwarz, C. I. Contescu, & K. Putyera (Eds.), Encyclopedia of Nanoscience and Nanotechnology (pp. 3361-3371). New York: Marcel Dekker. https://doi.org/10.1081/E-ENN2-120014205
Wormeester, Herbert ; Kooij, Ernst S. ; Poelsema, Bene. / Self-Assembled Thin Films: Optical Characterization. Encyclopedia of Nanoscience and Nanotechnology. editor / James A. Schwarz ; Cristian I. Contescu ; Karol Putyera. New York : Marcel Dekker, 2004. pp. 3361-3371
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keywords = "Effective medium theory, Optical characterization, METIS-220962, IR-75160, Colloid deposition, Image dipoles, Metal nanocrystals, Ellipsometry, Single particle polarizability, Size effects, Self-Assembly, Spatial distribution of nanoparticles",
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Wormeester, H, Kooij, ES & Poelsema, B 2004, Self-Assembled Thin Films: Optical Characterization. in JA Schwarz, CI Contescu & K Putyera (eds), Encyclopedia of Nanoscience and Nanotechnology. Marcel Dekker, New York, pp. 3361-3371. https://doi.org/10.1081/E-ENN2-120014205

Self-Assembled Thin Films: Optical Characterization. / Wormeester, Herbert; Kooij, Ernst S.; Poelsema, Bene.

Encyclopedia of Nanoscience and Nanotechnology. ed. / James A. Schwarz; Cristian I. Contescu; Karol Putyera. New York : Marcel Dekker, 2004. p. 3361-3371.

Research output: Chapter in Book/Report/Conference proceedingChapterAcademic

TY - CHAP

T1 - Self-Assembled Thin Films: Optical Characterization

AU - Wormeester, Herbert

AU - Kooij, Ernst S.

AU - Poelsema, Bene

PY - 2004

Y1 - 2004

N2 - Many different materials with truly new physical and chemical properties, consisting of controllably deposited colloid particles, are being developed. Particles with a variety of intrinsic properties are used, their sizes varying over at least three orders of magnitude. For photonic band gap materials, particle sizes are in the (sub)micron range, whereas for magnetic applications, such as ultra-high-density storage devices, they are in the low-nanometer range. A prerequisite for studying colloidal systems is the ability to characterize them unambiguously under relevant conditions. Among the large number of methods available for characterizing colloids and their superstructures, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are by far the most popular. For both very small as well as relatively large particles these are the most employed ex situ techniques. The use of various scanning probe microscopies - atomic force microscopy (AFM), scanning tunneling microscopy (STM), and magnetic force microscopy (MFM) - among colloid scientists is increasing; with these techniques experiments are also typically performed ex situ. , In fact, only optical methods have been employed in situ. For larger colloids, imaging techniques such as conventional or confocal microscopy are used. For sizes much smaller than the wavelength of light, such as with gold nanoparticles, only nonimaging (lateral averaging) in situ techniques are available. These include primarily ultraviolet/visible (UV/vis) absorption spectroscopy and also optical reflection techniques such as reflectometry and ellipsometry. The major advantage of ellipsometry as compared to reflectometry is its sensitivity to very small perturbations at an interface. Not only the deposition process but also the drying processes of (nano)colloidal particles at a solid-liquid interface can be studied. However, both the in situ and ex situ capabilities of the aforementioned reflection techniques depend on an unambiguous interpretation of recorded optical spectra.

AB - Many different materials with truly new physical and chemical properties, consisting of controllably deposited colloid particles, are being developed. Particles with a variety of intrinsic properties are used, their sizes varying over at least three orders of magnitude. For photonic band gap materials, particle sizes are in the (sub)micron range, whereas for magnetic applications, such as ultra-high-density storage devices, they are in the low-nanometer range. A prerequisite for studying colloidal systems is the ability to characterize them unambiguously under relevant conditions. Among the large number of methods available for characterizing colloids and their superstructures, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are by far the most popular. For both very small as well as relatively large particles these are the most employed ex situ techniques. The use of various scanning probe microscopies - atomic force microscopy (AFM), scanning tunneling microscopy (STM), and magnetic force microscopy (MFM) - among colloid scientists is increasing; with these techniques experiments are also typically performed ex situ. , In fact, only optical methods have been employed in situ. For larger colloids, imaging techniques such as conventional or confocal microscopy are used. For sizes much smaller than the wavelength of light, such as with gold nanoparticles, only nonimaging (lateral averaging) in situ techniques are available. These include primarily ultraviolet/visible (UV/vis) absorption spectroscopy and also optical reflection techniques such as reflectometry and ellipsometry. The major advantage of ellipsometry as compared to reflectometry is its sensitivity to very small perturbations at an interface. Not only the deposition process but also the drying processes of (nano)colloidal particles at a solid-liquid interface can be studied. However, both the in situ and ex situ capabilities of the aforementioned reflection techniques depend on an unambiguous interpretation of recorded optical spectra.

KW - Effective medium theory

KW - Optical characterization

KW - METIS-220962

KW - IR-75160

KW - Colloid deposition

KW - Image dipoles

KW - Metal nanocrystals

KW - Ellipsometry

KW - Single particle polarizability

KW - Size effects

KW - Self-Assembly

KW - Spatial distribution of nanoparticles

U2 - 10.1081/E-ENN2-120014205

DO - 10.1081/E-ENN2-120014205

M3 - Chapter

SN - 0-8247-4797-6

SP - 3361

EP - 3371

BT - Encyclopedia of Nanoscience and Nanotechnology

A2 - Schwarz, James A.

A2 - Contescu, Cristian I.

A2 - Putyera, Karol

PB - Marcel Dekker

CY - New York

ER -

Wormeester H, Kooij ES, Poelsema B. Self-Assembled Thin Films: Optical Characterization. In Schwarz JA, Contescu CI, Putyera K, editors, Encyclopedia of Nanoscience and Nanotechnology. New York: Marcel Dekker. 2004. p. 3361-3371 https://doi.org/10.1081/E-ENN2-120014205