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BEGIN:VEVENT

CATEGORIES:Natural Sciences
CATEGORIES:Lectures/Conferences
CATEGORIES:Utilities
CATEGORIES:Lecture/Talk
CATEGORIES:Main
CONTACT;X-BEDEWORK-UID=00f1fcdb-0f068baf-010f-068baf83-00000004:None
CREATED:20250616T163829Z
DESCRIPTION:Title: Applications of Nonlinear\, Femtosecond Laser Systems f
 or Understanding Artists' Historical Pigments\n\n\nAbstract: The field of
  technical art history brings together scientists\, conservators\, and cu
 rators to better our understanding of artists' materials and their works.
  The technical toolbox for analysis includes techniques that observe how 
 light interacts with a sample\, such as reflectance spectroscopy\, Raman 
 spectroscopy\, or x-radiography. While these techniques have their streng
 ths\, there are still some materials that prove difficult. Here\, I discu
 ss the use of nonlinear optical techniques\, such as pump-probe microscop
 y\, to expand the toolbox to address materials that are otherwise challen
 ging with conventional techniques.\n\nIn chapter 4\, I will focus on the 
 study of four of the most commonly used carbon-based black pigments. Thes
 e pigments are often difficult to study with noninvasive methods as they 
 are primarily carbon-based and black in color\, meaning there is little d
 ifferentiation that can be done elementally or spectrally. I demonstrate 
 the ability of pump-probe microscopy\, coupled with a simple machine lear
 ning algorithm\, to differentiate the four carbon-based black pigments fo
 cused on not only in individual paint-outs\, but also in two-black pigmen
 t mixtures and when each black pigment is mixed with a historically relev
 ant colorful pigment.\n\nChapter 5 shifts to my work constructing a syste
 m that combines pump-probe microscopy with stimulated Raman scattering. R
 aman spectroscopy is a powerful tool for identifying pigments due to its 
 molecular specificity. By coupling the nonlinear version\, stimulated Ram
 an scattering\, with pump-probe microscopy\, my goal is to achieve co-reg
 istered data for samples where Raman data and pump-probe date could provi
 de complementary information.\n\nTechnical art history comes back to be t
 he main focus in chapter 6 as I discuss my collaboration with the Nasher 
 Museum of Art over the course of the past year. This work stems from both
  pedagogical and technical efforts to support an art history course\, Cur
 atorial Practicum\, and the resulting gallery exhibition\, On the Same Wa
 velength: Art\, Science and Conservation\, that was at the Nasher Museum 
 of Art. I will share insights gathered from the technical analysis on the
  museum objects performed by myself and collaborators.
DURATION:PT1H
DTSTAMP:20250617T163155Z
DTSTART;TZID=America/New_York:20250710T100000
LAST-MODIFIED:20250617T163155Z
LOCATION;X-BEDEWORK-UID=00f1fcdb-0f068baf-010f-068baf6e-00000000:None
STATUS:CONFIRMED
SUMMARY:Defense: Heidi Kastenholz - "Applications of Nonlinear\, Femtoseco
 nd Laser Systems for Understanding Artists’ Historical Pigments"
UID:CAL-8a00f286-97700737-0197-799b49cf-00001464demobedework@mysite.edu
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X-BEDEWORK-STUDENT-CONTACT;X-BEDEWORK-PARAM-EMAIL=chem-office@duke.edu:Che
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END:VEVENT
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