عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
NATIONAL BIBLIOGRAPHY NUMBER
Number
TL51187
LANGUAGE OF THE ITEM
.Language of Text, Soundtrack etc
انگلیسی
TITLE AND STATEMENT OF RESPONSIBILITY
Title Proper
Structural Characterization and Manipulation of Chiral Nanosamples Using Structured Light and Optical Force
General Material Designation
[Thesis]
First Statement of Responsibility
Kamandi, Mohammad
Subsequent Statement of Responsibility
Capolino, Filippo
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
University of California, Irvine
Date of Publication, Distribution, etc.
2019
GENERAL NOTES
Text of Note
133 p.
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
Ph.D.
Body granting the degree
University of California, Irvine
Text preceding or following the note
2019
SUMMARY OR ABSTRACT
Text of Note
Detection, characterization and separation of chiral structures as one of the fundamental constituents of biomolecules are crucial in chemical and biological applications. Conventionally, chiroptical techniques such as circular dichroism (CD) are exploited to identify the material chirality. These methods require substantial amount of sample material with a high concentration. since chirality effect (as an indirect electric to magnetic coupling between incident light and sample material) is typically very weak. Therefore, the observation of chirality might be masked under the electric properties in chiroptical techniques if a substantial amount of material is not provided. Consequently, these techniques are not suitable for detection of chirality for nanoscale samples and can't provide information about their primary or secondary structure. On the other hand, separation of enantiomers is of great interest in pharmaceutical applications. Classical separation techniques which are used to separate molecular compounds and complexes in achiral environment, such as liquid-liquid extraction, chromatography and distillation are not universal for separation of all types of chiral molecules/compounds since not all compounds and host media are chemically compatible. This dissertation focuses on introducing new techniques for detection, characterization and manipulation of chiral nanoparticles and nanostructures using structured light. Specifically, a new technique involving the measurement of photo-induced optical force (near-field characteristics) rather than the measurement of conventional scattered power (far-field characteristics) is introduced which substantially enhances the resolution in the detection of enantiomer type of chiral samples down to sub-100 nm. Furthermore, by utilizing structured illumination (circularly polarized wave for detection of transverse chirality and combination of azimuthally and radially polarized waves in the so-called azimuthally-radially polarized beam for detection of longitudinal chirality) the prediction of spatial features of the structure of a chiral sample is facilitated. It's been demonstrated that circularly polarized illumination can't differentiate between chirality and anisotropy. To overcome this deficiency and differentiate between anisotropy and chirality, an engineered combination of vortex beams (ARPB) is utilized. Lastly, a novel scheme to manipulate and control chiral nanoparticles and to sort enantiomers is proposed.
UNCONTROLLED SUBJECT TERMS
Subject Term
Applied physics
Subject Term
Electrical engineering
Subject Term
Nanoscience
Subject Term
Nanotechnology
Subject Term
Optics
Subject Term
Organic chemistry
Subject Term
Physical chemistry
PERSONAL NAME - PRIMARY RESPONSIBILITY
Kamandi, Mohammad
PERSONAL NAME - SECONDARY RESPONSIBILITY
Capolino, Filippo
CORPORATE BODY NAME - SECONDARY RESPONSIBILITY
University of California, Irvine
ELECTRONIC LOCATION AND ACCESS
Electronic name
مطالعه متن کتاب p
[Thesis]
276903
a
Y
