Current Undergraduate Students in The Research Group
 
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Dr. Steve Jacobs Biographies:

Institute of Optics

 
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Current Undergraduate Students

 

 

Lamitex G10 polymer substrate carriers being loaded onto a Suba PF-SXEL-54 polyurethane polishing pad within a P. R. Hoffman double sided glass polishing machine.

 

Ms. Tess Jacobs is a junior in Optics. Since January of 2013, she has worked in the Optical Fabrication Shop on a project to study the properties of optical glass polishing abrasives that have been recycled from spent slurries. This work is a collaboration between Flint Creek Resoures (FCR), Gorham, NY, and Sydor Optics, Rochester, NY, funded by the Department of Energy. Ms. Jacobs conducts various tests on fresh, spent, and recycled ceria powders. Properties of interest include particle size distribution, contamination via loss-in-ignition tests, and glass polishing performance (removal rate and surface roughness) with double sided polishing machines.

 

 

 

Colorized SEM image of a cerium oxide particle, indicating the fused single crystal grains that comprose the aggregate.

photo credit: D. Saulnier

 

Former Undergraduate Students

 

 

 

Mr. Lucca Giannechini is a Masters student in the Materials Science Program. He works with PhD student Sivan Salzman on characterization of slurries used in Magnetorheological Finishing (MRF). As an undergraduate, he was involved in measuring the zeta-potential of zirconia-coated carbonyl iron (CI) particles as a function of pH for different concentration levels of surfactant stabilizers. The instrument used in this work was a Colloidal Dynamics Acoustosizer II. Mr. Giannechini was also involved in the measurement of surface topography of polycrystalline ceramics after processing with MRF. For his Master's thesis, Mr. Giannechini will determine how nonmagnetic zirconia nanoparticles participate in the MRF process.

 

 

 

 

Ms. Sarah Walters is a first year PhD student at The Institute of Optics. For her entire undergraduate time at the U of R, she worked in our laboratories .Ms. Walters' initial activities were involved with the creation and microscopic examination of "blister" defects in multilayer dielectric thin film (MLD) coatings after aggressive cleaning procedures. The image below (right) won First Place in the Hajim School Engineering Art Competition in 2010, and it was exhibited at the Memorial Art Gallery Clothesline Art Festival. The image below (left) was designated an "Image of Distinction" in the 2012 Photomicrography Competition conducted by Microscopy Magazine. More recently, Ms. Walters has been working on alignment of liquid crystal from various glass surface treatments.

 

 

500x Nomarski image of cleaning-induced delamination of an anti-reflective optical coating on a silicon wafer

 

 

1000x Nomarski image of five "blister" defects induced in the surface of an MLD by cleaning.

 

 

 

Anne and Jimmy Himes promoting technology careers at the Liquid Crystal Mood Patch Booth, ROSA Family Night, University of Rochester Goergen Hall, December 2011

Ms. Anne Marino Himes graduated with a Mathematics degree and a minor in Philosophy. She obtained her MS in Industrial Mathematics at RIT and is currently employed at Advanced Glass Industries. Ms. Himes began work in our group as an LLE summer intern after her junior year in high school. Her project to develop durable, colored phosphate glasses evolved into a research collaboration during her senior year in high school with a Chinese scientist over the internet. The outcome was a phosphate glass composition used by students taking the melting lab for Optics 443 (see courses), and a research paper (see below).

As an undergraduate at the U of R,Ms. Himes worked on a project to characterize polishing pitch, the evaluation of optical materials with a commercial birefringence mapper (see instrumentation), the development of bound abrasives to prepolish hard ceramics, and a study of the chemical durabilityof phosphate laser glasses [LLE Review, vol. 100, p.257 (2004)]. Ms Himes spent many hours putting together materials for the OSA Rochester Section (ROSA) Middle School Optics Suitcase Outreach Program.

Publications and Presentations:

A. E. Marino, K. E. Spencer, J. E. DeGroote, K. L. Marshall, A. Rigatti, and S. D. Jacobs, "Chemical durability of phosphate laser glasses polished with pitch, pads, or MRF,"LLE Review, vol. 100, p.257 (2004).

A. Marino, K. Spencer, J. DeGroote, and S. Jacobs, “Chemical durability of phosphate laser glasses”, presented at the OSA Topical Meeting on Optical Fabrication and Testing, Rochester, NY, Oct. 10, 2004.

L. L. Gregg, A. E. Marino, J. C. Hayes, and S. D. Jacobs, “Grain Decoration in Aluminum Oxynitride (ALON) from Polishing on Bound Abrasive Laps,” in Optical Manufacturing and Testing V , edited by H. P. Stahl (SPIE, Bellingham, WA, 2003), Vol. 5180, pp. 47–54.

G. Chen, Y. Du, S. Wang, A. E. Marino, L. L. Gregg, S. R. Arrasmith, and S. D. Jacobs, “Effect of SnO on Chemical Durability of Phosphate Glasses,” Glass Technol. 43C , 97 - 99 (2002).

A. E. Marino, S. R. Arrasmith, L. L. Gregg, S. D. Jacobs , G. Chen, and Y. Duc, “Durable Phosphate Glasses with Lower Transition Temperatures,” J. Non-Cryst. Solids 289 , 37 - 41 (2001).

 

Ms. Catherine Froman obtained her BS degree in Chemical Engineering. In our group Ms. Fromen manufactured layered, polymer cholesteric liquid crystal  flakes and characterized their electro-optic properties in fluid filled cells. She and Gerald Cox discovered a reverse drive mechanism for returning flakes to their "high brightness" orientation. Ms. Fromen received a U S. patent for this discovery. She is currently finishing her PhD in Chemical Engineering in the DeSimone Group at the University of North Carolina, Chapel Hill.

 

Patent and Publications:

 

Gerald P. Cox, Cathy A. Fromen, Kenneth L. Marshall and Stephen D. Jacobs,"PCLC flake-based apparatus and method," U. S.Patent #8,293,135 (issued October 27, 2012).

 

G. P. Cox, K. L. Marshall, J. C. Lambropoulos, M. Leitch, C. Fromen, and S. D. Jacobs, “Modeling the Effects of Microencapsulation on the Electro-Optic Behavior of Polymer Cholesteric Liquid Crystal Flakes,” J. Appl. Phys. 106, 124911 (2009).

 

 

 

Ms. Rupal Varshneya obtained her BS and MS degrees in Optics at The Institute of Optics. Ms. Varshneya started working in our group during her freshman year. Her research projects included the characterization of optical polishing pitch, and indentation hardness testing of optical glasses. During the summer of her sophomore year Ms. Varshneya worked as an REU student in our lab on the fabrication of shaped polymer cholesteric liquid crystal (PCLC) flakes using soft lithography. She went on to assemble and evaluate the electro-optic behavior of PCLC flakes in dielectric fluid-filled cells with small AC fields.

Rupal was President of the OSA student chapter in 2003-2004, and she was Education Chair for 2004-2005. In this capacity, she participated in numerous educational outreach activities to promote science careers for women. Ms.Varshneya is currently an engineer with the Night Vison Laboratory in Ft. Belvoir, VA.

Publications and Presentations:

J. Lambropoulos and R. Varshneya, "Glass material response to the fabrication process: examples from lapping," presented at the OSA Topical Meeting on Optical Fabrication and Testing, Rochester, NY, Oct. 10, 2004.

A. Trajkovska-Petkoska, R. Varshneya, T. Z. Kosc, K. L. Marshall, and S. D. Jacobs, "Enhanced Electro-Optic Behavior for Shaped Polymer Sholesteric Liquid Crystal (PCLC) Flakes Made by Soft Lithography," accepted by Adv. Funct. Mater. (July 2004).

A. Trajkovska-Petkoska, R. Varshneya, T. Z. Kosc, K. L. Marshall, and S. D. Jacobs, “Electric-Optical Response of Shaped Polymer Cholesteric Liquid Crystal Flakes in an AC Field,” Great Lakes Photonics Symposium, Cleveland OH, 7 - 11 June 2004 (manuscript to appear in symposium CD).

R. Varshneya, A. Trajkovska-Petkoska, T. Z. Kosc, and S. D. Jacobs, "Motion of Polymer Cholesteric Liquid Crystal Flakes in an Electric Field," Research Experience for Undergraduates (REU),University of Rochester, 8 August, 2003.

A. Trajkovska-Petkoska, R. Varshneya, T. Z. Kosc, K. L. Marshall, and S. D. Jacobs, “Manufacture of Shaped Polymer Cholesteric Liquid Crystal Flakes Using Soft Lithography,” 12th Annual University of Rochester Symposium on Materials Research (SOMR), Rochester, NY, 3 April 2004.

R. Varshneya, A. Trajkovska-Petkoska, T. Z. Kosc, and S. D. Jacobs, “Motion of Polymer Cholesteric Liquid Crystal Flakes in an Electric Field,” Industrial Associates of The Institute of Optics, University of Rochester, Rochester, NY, 10 October 2003.

R. Varshneya, J. E. DeGroote, L. L. Gregg, and S. D. Jacobs, "Characterizing Optical Polishing Pitch," Optifab 2003 (SPIE, Bellingham, WA,2003), Vol. TD02, pp. 87-89.

J. E. DeGroote, S. D. Jacobs, L. L. Gregg, A. E. Marino, J. C. Hayes, and R. Varshneya, “A Data Base for the Physical Properties of Optical Polishing Pitch,” in Optical Fabrication and Testing Digest (Optical Society of America, Washington, DC, 2002), pp. 55-59.

 

Ms. Katie Spencer obtained her BS degree in Optics from The Institute of Optics. Ms.Spencer started work with our group in January of 2004. Her initial project was the characterization of phosphate laser glass coupons for chemical durability against degradation from humidity in a 14 week test. In this work she became proficient with using the Zygo NewView 100 white light interference microscope for microroughness measurements. During the summer of 2004, Ms. Spencer worked on ideas and developed lesson plans to use in demonstrations for 100 middle school teachers attending OSA's Educator's Day in downtown Rochester on Tuesday, October 12th. Ms. Spencer works at the Naval Research Laboratories.

 

Publications and Presentations:

K. Spencer, R. Varshneya and S. Jacobs, "Polarizers and Polarized Light - a Lesson Plan for Middle School," prepared for Educator's Day, OSA Annual Meeting, Rochester, NY, October 12, 2004.

K. Spencer, R. Varshneya, A. Marino, and S. Jacobs, "Liquid Crystals and Mood Patches - a Lesson Plan For Middle School," prepared for Educator's Day, OSA Annual Meeting, Rochester, NY October 12, 2004.

A. E. Marino, K. E. Spencer, J. E. DeGroote, K. L. Marshall, A. Rigatti, and S. D. Jacobs, "Chemical durability of phosphate laser glasses polished with pitch, pads, or MRF," to be submitted to Applied Optics (September, 2004)

A. Marino, K. Spencer, J. DeGroote, and S. D. Jacobs, “Chemical Durability of Phosphate Glasses,” Industrial Associates of The Institute of Optics, University of Rochester, Rochester, NY, 5 April 2004

 

Ms. Katie Hasman obtained her BS and MS degrees in Optics from The Institute of Optics. As a graduate student she was awarded the Harvey M. Pollicove Memorial Scholarship. Ms. Hasman's work in our group centered around the fabrication of shaped polymer cholesteric liquid crystal flakes for electro-optics applications. Ms. Hasman was very active in youth career outreach. She is currently an optical design engineer at ITT Excelis Geospatial Systems in Rochester, NY.

Publications and Presentations:

A. Trajkovska Petkoska, T. Z. Kosc, K. L. Marshall, K. Hasman, and S. D. Jacobs, “Motion of Doped-Polymer-Cholesteric Liquid Crystal Flakes in a Direct-Current Electric Field,” J. Appl. Phys. 103, 094907 (2008).

 

K. L. Marshall, K. Hasman, M. Leitch, G. Cox, T. Z. Kosc, A. Trajkovska-Petkoska, and S. D. Jacobs, “Doped Multilayer Polymer Cholesteric-Liquid-Crystal (PCLC) Flakes: A Novel Electro-Optical Medium for Highly Reflective Color Flexible Displays,” in the SID 07 Digest, edited by J. Morreale (Society for Information Display, San Jose, CA, 2007), Vol. XXXVIII, Book II, pp. 1741–1744

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K. L. Marshall, A. Trajkovska-Petkoska, K. Hasman, M. Leitch, G. Cox, T. Z. Kosc, and S. D. Jacobs, “Polymer Cholesteric-Liquid-Crystal (PCLC) Flake/Fluid Host Electro-Optical Suspensions and Their Applications in Color Flexible Reflective Displays,” in The Proceedings of The International Display Manufacturing Conference 2007, edited by C. H. Chen and Y.-S. Tsai (Society for Information Display, Hsinchu, Taiwan, 2007), pp. 70–73.

 

“Development of Polymer Cholesteric Liquid Crystal Flake Technology for Electro-Optic Devices and Particle Displays,” T. Z. Kosc, K. L. Marshall, A. Trajkovska-Petkoska, C. J. Coon, K. Hasman, G. V. Babcock, R. Howe, M. Leitch, and S. D. Jacobs, in Emerging Liquid Crystal Technologies II, edited by L.-C. Chien (SPIE, Bellingham, WA, 2007), Vol. 6487, p.64870L

 

Ms. Amy Bishop obtained her BS degree in Optics from The Institute of Optics. Ms. Bishop's work in our group centered around the use of white light interferometry to characterize topography of glass surfaces after polishing with magnetorheological finishing. She also used a birefringence mapper to study alignment of liquid crystal fluids. Ms. Bishop was very active in youth career outreach. She is currently an engineer at the Naval Undersea Warfare Center in Middletown, RI.

 

Publications and Presentations:

 

J. E. DeGroote, A. E. Marino, J. P. Wilson, A. L. Bishop, and S. D. Jacobs, “The Role of Nanodiamonds in the Polishing Zone During Magnetorheological Finishing (MRF),” in Optical Manufacturing and Testing VII, edited by J. H. Burge, O. W. Faehnle, and R. Williamson (SPIE, Bellingham, WA, 2007), Vol. 6671, p. 66710Z.

 

J. E. DeGroote, A. E. Marino, J. P. Wilson, A. L. Bishop, and S. D. Jacobs,“Material Removal Rate Model for Magnetorheological Finishing (MRF) of Optical Glasses with Nanodiamond MR Fluid,” in Optifab 2007: Technical Digest, SPIE Technical Digest (SPIE, Bellingham, WA, 2007), Vol. TD04, pp. TF040F.

 

J. E. DeGroote, A. E. Marino, J. P. Wilson, A. L. Bishop, J. C. Lambropoulos, and S. D. Jacobs, “Removal Rate Model for Magnetorheological Finishing of Glass,” Appl. Opt. 46, 7927–7941 (2007).

 

 

 

 

Katie Hasman, Katie Schwertz (Edmund Scientific, Tucson, AZ) and Amy Bishop at a Jr. Girl Scout Optics Suitcase outreach activity on the U of R campus that they organized for the Society of Women Engineers (2/08).

 

 

 

Mr. Michael Skarlinski obtained his BS in Mechanical Engineering. His research concentrated on scaling up a process for coating magnetic carbonyl iron (CI) particles with a thick film of zirconia, and then determining how to make stable, aqueous-based magnetorheological (MR) fluids. In May, 2010,he won the President's Choice Award for Undergraduate Research for work entitled, "Fluid Rheology and Stability of Zirconia-coated Carbonyl Iron Powder for Magnetorheological Finishing." Mr.Skarlinski is now a Ph. D. student in the Mechanical Engineering Department doing research with Prof. David Quesnel.

Publications and Presentations:

 

S. Shafrir, H. Romanofsky, M. Skarlinski, M. Wang, C. Miao, S. Salzman, T. Chartier, J. Mici, J. Lambropoulos, R. Shen, H. Yang and S. D. Jacobs, "Zirconia coated carbonyl iron particle-based magnetorheological fluid for polishing, "Appl. Opt. 48, pp. 6797-6810 (2009).

 

M. D.Skarlinski and S. D. Jacobs, "Modifying the Rheological Properties of Zirconia Coated Carbonyl Iron Suspensions through Acid-Base Titration and the Addition of Di-Ammonium Citrate," OSA Topical Meeting on Optcial Fabrication and Testing, Jackson Hole, WY (2010).

 

 

 

 

 

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