BEGIN:VCALENDAR VERSION:2.0 X-WR-CALNAME:EventsCalendar PRODID:-//hacksw/handcal//NONSGML v1.0//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York LAST-MODIFIED:20240422T053451Z TZURL:https://www.tzurl.org/zoneinfo-outlook/America/New_York X-LIC-LOCATION:America/New_York BEGIN:DAYLIGHT TZNAME:EDT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT BEGIN:STANDARD TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT CATEGORIES:College of Arts and Sciences,Thesis/Dissertations DESCRIPTION:Title: Single-Particle Chiral Spectromicroscopy:Artifact Correc tion and Characterization of Plasmonic Nanostructures by Vidhi Singla Advi sor:  Dr. Wei-Shun Chang, Chemistry & Biochemistry Dept. Committee Member s: Dr. Catherine Neto, Chemistry & Biochemistry Dept. & Dr. Milana Vasudev , Bioengineering Dept. Abstract: Chirality plays a critical role in biolog y and medicine, yet conventional techniques such as optical rotatory dispe rsion and circular dichroism suffer from low detection sensitivity. Plasmo nic nanostructures enhance chirality detection through localized surface p lasmon resonance, but their inherent size and shape heterogeneity makes si ngle-particle measurements essential. Existing single-particle dark-field scattering methods, however, suffer from linear dichroism artifacts caused by imperfect waveplate retardance, resulting in ±10% measurement uncerta inty. This thesis develops an artifact-free single-particle chiral dark-fi eld scattering spectromicroscopy. Using unpolarized excitation and a quart er-wave plate/Wollaston prism detection assembly, left- and right-handed c ircularly polarized scattering are simultaneously decoded. Dual measuremen ts at ±45° waveplate orientations eliminate linear dichroism artifacts w hile preserving true chiral signals, verified by Stokes–Mueller calculus . The method enables accurate, high-throughput chirality characterization without modifying existing instrumentation.\nEvent page: https://www.umass d.edu/events/cms/ms-thesis-defense-by-vidhi-singla.php\nEvent link: https: //umassd.zoom.us/j/91017390345?pwd=gAgrVmNcwf0aeGTwbjVTtTskMjJVlP.1 X-ALT-DESC;FMTTYPE=text/html:

Title: Single-Particle Chiral S pectromicroscopy:Artifact Correction and Characterization of Plasmonic Nan ostructures by Vidhi Singla

\n

Advisor:  Dr. Wei-Shun Chang\, Chemis try & Biochemistry Dept.

\n

Committee Members: Dr. Catherine Neto\, C hemistry & Biochemistry Dept. & Dr. Milana Vasudev\, Bioengineering Dept.< /p>\n

Abstract:

\n

Chirality plays a critical role in biology and m edicine\, yet conventional techniques such as optical rotatory dispersion and circular dichroism suffer from low detection sensitivity. Plasmonic na nostructures enhance chirality detection through localized surface plasmon resonance\, but their inherent size and shape heterogeneity makes single- particle measurements essential. Existing single-particle dark-field scatt ering methods\, however\, suffer from linear dichroism artifacts caused by imperfect waveplate retardance\, resulting in ±10% measurement uncertain ty.

\n

This thesis develops an artifact-free single-particle chiral d ark-field scattering spectromicroscopy. Using unpolarized excitation and a quarter-wave plate/Wollaston prism detection assembly\, left- and right-h anded circularly polarized scattering are simultaneously decoded. Dual mea surements at ±45° waveplate orientations eliminate linear dichroism arti facts while preserving true chiral signals\, verified by Stokes–Mueller calculus. The method enables accurate\, high-throughput chirality characte rization without modifying existing instrumentation.

Event page: https://www.umassd.edu/events/cms/ms-thesis-defense-by-vidhi-singla.p hp
Event link: https://umassd.zoom.us/j/91017390345?pwd=g AgrVmNcwf0aeGTwbjVTtTskMjJVlP.1

DTSTAMP:20260602T134846 DTSTART;TZID=America/New_York:20260615T130000 DTEND;TZID=America/New_York:20260615T150000 LOCATION:Virtual SUMMARY;LANGUAGE=en-us:MS Thesis Defense by Vidhi Singla UID:c3aa4c816ef46d239ebd93eca1cd12c9@www.umassd.edu END:VEVENT END:VCALENDAR