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I/UCRC CBSS New Proposal Presentation – April 2012 Update on FY2007 programs

NSF REU in Integrated Nanomanufacturing – an Introduction to Prof Zhang’s Laboratory and Mesoporous Titanium Oxide Coating on Diatom

Frustules towards Dye-sensitized Solar Cell Applications

Ryan McNaughton Boston University; Biomedical Engineering

Faculty Mentor: Professor Xin Zhang Mechanical Engineering

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Brief overview of presentation

§  Introducing myself §  Background – high school to college §  Previous research experience

§  This summer’s research laboratory §  Summer research progress and goals §  Positives experiences and what to expect going forward

Presentation Overview NSF REU INM Introductory Day for RET Participants - July 6, 2015

About Myself

§  Ryan McNaughton §  Bishop Hendricken High School, Warwick, RI §  Boston University, Northeastern, Cornell,

Dartmouth, UCONN, URI, UVA §  Rising Senior, Biomedical Engineering §  Career Path: Medical Device or Medical/Cancer Research §  My path to research

§  Began October 2013

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Introduction NSF REU INM Introductory Day for RET Participants - July 6, 2015

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Influencing Factors for Biomedical Engineering

§  Strength of BU Engineering program §  Family history §  Desire to help others

§  Upon Graduation: §  Pursuing a Mechanical Engineering Masters/PhD degree

Influences NSF REU INM Introductory Day for RET Participants - July 6, 2015

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Previous Research & Work Experience

§  Boston Scientific: May 2014 - August 2014

§  Engineering Intern §  Helped improve company sterilization procedure §  Recorded sterilization results and reports to forecast potential

maintenance

§  Laboratory for Microsystems Technology: October 2013 - Present §  Research Assistant §  Fabricated micropillar arrays to measure cellular forces §  Coded a batch analyzation GUI §  Titanium Dioxide deposition

Research Experience NSF REU INM Introductory Day for RET Participants - July 6, 2015

This Summer’s Research Experience §  Laboratory for Microsystems Technology

§  Photonics Center: Rm. 903

§  Project Goals: §  Fabricate monolayers of titanium dioxide coated diatoms §  Reproduce two styles of solar cells:

§  Titanium nanoparticles §  Titanium dioxide pastes

§  What attracted you to an REU program? §  Familiarity §  Ability to continue my research

§  What do you expect to take away from this program? §  Key research experience §  Preparation for graduate school

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Summer Research NSF REU INM Introductory Day for RET Participants - July 6, 2015

Laboratory Members

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I/UCRC CBSS NSF REU Supplement Introductory Presentation – June 2012

Background: Diatoms and Solar Cells

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Summer Research Goals NSF REU INM Introductory Day for RET Participants - July 6, 2015

Hypovalve

Epivalve

Girdle

Cribellum

Cribrum

Areola

Coscinodiscus  sp.

Fig.1 Morphology of diatom frustules [1] Fig.2 Porous structures of diatom frustules [2]

Fig.3 Schematic of diatom based solar cells [3] Fig.4 I-V curves of traditional solar cells v.s. diatom based solar cells[3]

General Results

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Summer Research Goals NSF REU INM Introductory Day for RET Participants - July 6, 2015

Fig.5 Preliminary results: diatom surface before(upper) and after(lower) TiO2 deposition.

Fig.6 Preliminary results: STEM & EDX analysis of diatom cross sections.

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30

50

70

200 400 600 800 1000 1200 1400 1600

T%�

λ�

Light transmission

Diatoms

TiO2-diatom frustule particles

Fig.7 Diatom/TiO2-diatom frustule particles’ light transmissions.

Summer Research Goals

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Summer Research Goals NSF REU INM Introductory Day for RET Participants - July 6, 2015

§  Optimize deposition process §  Uniform coating

Fig. 8 0.05 g Diatom coated with TiO2

Fig. 9 0.15 g Diatom coated with TiO2

§  Incorporate monolayers into solar cells

§  Positives: §  Hands on clean room experience §  Opportunity to take a project from start to finish §  Dedicated faculty and graduate school mentors §  Provides both freedom and structure

§  Week 1: §  Step-by-step introduction to the process §  Goal – peace of mind and familiarity with progress

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What You Should Expect

Positives and Negatives NSF REU INM Introductory Day for RET Participants - July 6, 2015

Thank You!

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I/UCRC CBSS NSF REU Supplement Introductory Presentation – June 2012