Optical examination and monitoring of surfaces

Neal, W.E.J.

doi:10.1016/0378-5963(79)90042-4

Cited by 34 publications

(6 citation statements)

References 149 publications

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“…and Yo measured in two zones according to Eqns (1, 2) for a bare surface in pure buffer solution. Owing to the presence of the oxide layer on silicon, and in the present work a bound methylsilane layer on top of this oxide for the hydrophobic slides, this Ns is a pseudorefractive index representing a composite surface [28]. The error, induced by using a pseudoNs instead of involving the respective refractive indices of the substrate consisting of silicon covered by an approximately 2-nm-thick layer of oxide and eventually methylsilane, was checked by simulations and found negligible compared to the experimental errors.…”

Section: Ellipsometric Methodsmentioning

confidence: 97%

Complement deposition from human sera on silicon surfaces studied in situ by ellipsometry. The influence of surface wettability

1986

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Organic material deposition from human sera on silicon dioxide surfaces was studied in situ by means of ellipsometry, an optical method for quantification of thin organic films.The deposition of organic material from sera was followed continously for 2 h on hydrophobic and hydrophilic silicon surfaces. Both types of surfaces adsorbed organic material and the additional incubation with anti-C3 resulted in further deposition of organic material indicating the presence of C3 in the organic layers. Addition of EDTA in serum or heat inactivation resulted in a decrease of the amount of organic material deposited on the hydrophobic surface as well as in a lack of subsequent anti-C3 deposition on both hydrophilic and hydrophobic surfaces. Preadsorption with immunoglobulin G on the surfaces caused a pronounced increase of the deposition of material from serum as well as of subsequent anti-C3 deposition. Both effects were absent if EDTA was present in the serum. Our results indicate that complement activation and deposition occur by incubation of human sera on hydrophobic and hydrophilic silicon dioxide surfaces, which are two surfaces with very simple and well-defined chemical composition. The degree of the reversibility of the deposition of immunoglobulin G was furthermore larger on hydrophilic silicon.

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Section: Ellipsometric Methodsmentioning

confidence: 97%

Complement deposition from human sera on silicon surfaces studied in situ by ellipsometry. The influence of surface wettability

1986

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“…Due to the presence of 1-2 nm thick spontaneously formed hydrated oxide on the silicon, this index will be a pseudo refractive index describing a composite first layer. According to Neal (12), for very thin films (10 nm), i.e. the hydrated oxide, the change in 4> and A due to one overlaying film, i.e.…”

Section: Methodsmentioning

confidence: 99%

Spin-deposited submicrometer films of organic molecules for secondary ion mass spectrometry studies

Saeve¹,

Hakaansson²,

Sundqvist³

et al. 1987

Anal. Chem.

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“…photoconductivity, surface photoe.m.f., etc. It should be convenient to compare results of such investigations with the results obtained from ellipsometry [9].…”

Section: Theoretical Basis Of the Angular Methods Of Pme Invefitigationmentioning

confidence: 99%

The Dependence of the Photomagnetoelectric Effect on the Angle of Incidence of Radiation

Nowak

1982

phys. stat. sol. (a)

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The theory of the PME effect is extended for the case of non‐normal incidence of radiation into a semiconductor covered with non‐absorbing surface film. Numerical analyses performed for typical semiconductor parameters are presented. The polarization and angular dependence methods of PME investigation are proposed for determining surface film and semiconductor parameters. The results of investigations on p‐Si covered with natural oxide film are reported.

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Optical examination and monitoring of surfaces

Cited by 34 publications

References 149 publications

Complement deposition from human sera on silicon surfaces studied in situ by ellipsometry. The influence of surface wettability

Complement deposition from human sera on silicon surfaces studied in situ by ellipsometry. The influence of surface wettability

Spin-deposited submicrometer films of organic molecules for secondary ion mass spectrometry studies

The Dependence of the Photomagnetoelectric Effect on the Angle of Incidence of Radiation

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