Gerry Knapp

Welcome! I am Gerry Knapp, and I am a graduate assistant at Pennsylvania State University co-advised by Dr. T. DebRoy and Dr. Todd Palmer. My research focuses on modeling heat transfer and fluid flow in additive manufacturing systems in order to calculate the driving forces of solidification kinetics (tempearture gradients and solidfication front velocities). If you have questions or want to talk, please get in touch; my contact information is below.

Picture of Me

Directed Energy Deposition


Please see the paper "Building blocks for a digital twin of additive manufacturing" (Acta Materialia, 2017) for further description of published research from my group.

Microfluidic Devices


Microfluidic device for reactivating frozen zebrafish zygotes.

Microfluidic mixing device for reactivating cryogenically frozen zebrafish sperm.

My first experience working in a research lab was in a biological engineering laboratory while I was a high school student. I was interested in biomaterials and interviewed with a professor fabricating biomedical devices. Over that summer, I joined a team with two high school teachers on an NSF-sponsored LA-SiGMA project to develop lesson plans and lab experiments for demonstrating microfluidic concepts and devices to high school students. Working with teachers as colleagues gave me key insights to the teaching process and made my learning more reflective.

I continued my work in this research lab for the two years after arriving at LSU. I used photolithography to manufacture polymer-based microfluidic device molds and subsequently fabricated and characterized the actual devices. The goal was to create low-cost devices to improve performance of cryogenically-stored zebrafish zygote reactivation, which reduces biological sample waste. For part of this time I was funded through the Howard Hughes Medical Institute (HHMI) Summer Scholars program. I co-authored a paper titled “Microfluidics and numerical simulation as methods for standardization of zebrafish sperm cell activation,” published May 2015, in Biomedical Microdevices.

Android Tablet Application Development


Application running on tablet

Application demo on an Android tablet.

During a break from working in the biological research lab, in my first year at LSU I worked on another research project, relating to Civil Engineering, as part of my Chancellor’s Research Scholarship. In this project, I developed a tablet application for building damage assessment after natural disasters such as hurricanes. While I was still interested in biology and biomaterials, this project offered a chance to learn about structural materials, and to indulge myself in learning a new technology. Over the year, I taught myself how to code in Java and worked with graduate students to make sure the application recorded all of the information they needed. While I determined that a computer science career was not for me, the experience showed me how a working knowledge of programming was critical to many facets of scientific research. The programming knowledge I gained in this project later qualified me to become part of a physical chemistry research group running materials analysis on a high performance computing cluster.

X-Ray Tomography and Visualization


Presenting poster at international conference

Presenting a poster on visualization data processing workflow at the International Conference on Tomography of Materials and Structures (Quebec, June 2015)


Avizo rendering of hydrogen fuel cell neutron imaging data

Visualization of neutron imaging data of a hydrogen fuel cell

After taking a course in scientific visualization, I was offered a summer research internship with the course’s professor, Dr. Butler. There, I transferred existing algorithms for processing x-ray tomography data into a format that could be parallelized in order to take advantage of high performance computing. In addition, I helped two high school teachers transfer the computer visualization aspect of the work into an eBook for their students. I worked in this research position while concurrently working part-time in the biological engineering laboratory, where I was training a new graduate student on the microfluidics project. The work with Dr. Butler led to co-authorship of a conference proceeding titled "Data Workflow and Visualization: X-Ray Interferometry, Vistrails and IPad/Android Collaboration” for the LA-SiGMA 2013 Symposium.

When I returned to LSU, I was offered an undergraduate research assistant position with Dr. Butler to work on a W.M. Keck Foundation grant building a novel grating-based x-ray interferometry instrument to be used on the LSU synchrotron x-ray beamline. My main role was to work with a multi-disciplinary team of physicists, chemists, and an electrical engineer to create a mechanical design and assemble the instrument, but I also continued on the development of the data workflow and visualization. This work led to the creation of an instrument capable of low-dose phase contrast and dark field imaging that will allow for x-ray sensitive medical samples to be observed, and an increased capability for data processing documentation and repeatability. Overall, this work produced two poster presentations at LSU, a refereed extended abstract and poster presentation at the 2015 ITCMS conference in Quebec City, and an in-preparation paper on the first results of using the instrument for analyzing 3-D printed ABS parts produced by fused deposition modelling.

Carbon-Boron Nitride Nanotube Synthesis


Carbon nanotube fabrication

Electric arc synthesis products

I decided materials science was the field I wanted to pursue for my graduate studies during a self-organized semester study abroad at UCBL 1 in Lyon, France, where I worked as a research assistant in a nanomaterials laboratory. My project was to create hybrid carbon and boron-nitride nanotubes via electric arc synthesis. That semester was an intense training in chemistry, French, and the importance of celebrating research progress with champagne. Near the end of the semester, when looking at the nanotubes at 1,000,000x resolution on a Transmission Electron Microscope, it became clear to me I wanted to continue in the field.

I have been fortunate to have had many opportunities for developing leadership skills while at LSU, and have made an effort to make sure that others have the same opportunities that I have. Below are some of the experiences I have had during my time at LSU.

Residential Life


Serving students/residents jambalaya at community event

Serving students/residents jambalaya at community event

As a Residential Assistant in the Honors College Residential Hall in my sophomore year, I was responsible for the safety, well-being, and sense of community of the students in my hall. In my first semester, I noticed that many bright students in the Honors College were not taking advantage of the many resources available to them around campus just because they weren’t talking to faculty. With so many opportunities to do undergraduate research or find a mentor in a professor or instructor, I came up with the idea for a program to help incoming students achieve more by becoming comfortable with networking through faculty at the university. I interviewed many research faculty at LSU, and developed a new presentation and workshop for students on the benefits of interacting with faculty while studying at LSU. Since then, I have been asked to repeat this presentation to students three times through the LSU's Communication across the Curriculum center.

Research and Development


I worked with the Office of Research and Economic Development to turn the successful application of our NSF I-Corps team into a catalyst for more entrepreneurial ventures to come from LSU. I have now spoken at two campus-wide seminars about our journey through the program, what we learned, and how it benefitted us, to help convince potential entrepreneurial mentors and LSU students and faculties who had research they might want to commercialize to become involved in I-Corps.

A podcast of one of the presentations I was part of can be found on the LSU CCT website.

Educational Outreach


Educational outreach for elementary school students.

Educational outreach for elementary school students

The Louisiana public school system often struggles to accommodate students who fall below their grade level and can be lacking in opportunities for hands-on STEM education. While at LSU, I have tutored students below grade level in reading and with English as Second Language. Currently, through the LSU Society of Peer Mentors, I go to local K-12 schools and teach students about magnetism, electronics, chemistry, and computer science. Outreach and tutoring has allowed me to see firsthand the curiosity and creativity of young students, and continuously inspires me to give back to the community.

I have also had multiple roles within the LSU College of Engineering's "Encounter Engineering camp" for incoming freshman (originally created as part of an NSF STEP grant). This camp is a week long program that gives incoming students an opportunity to meet each other, learn study skills, learn from mentor students, and to generally get a taste of what college is going to be like. I have been a peer mentor for the students, and when the camp doubled in size, I was selected to be part of a four-person team to create the engineering design project that helps students develop teamwork and engineering problem solving skills.

Professional Activity


The student American Society of Mechanical Engineers (ASME) chapter has played an important role in giving me a real-world point of view on engineering. Speakers from companies like Textron, Shell, and Cameron have provided many opportunities to learn about the various aspects of the petrochemical industry, engineering design, project management, and more. As a national member of ASME, I have participated in the ASME3D conference in Boston, MA. This was a unique experience where I was able to meet many professional engineers and listen to keynote speeches by the ASME leadership. Besides being a great networking opportunity, I was able to see role models in the form of the engineers at the forefront of the development and implementation of additive manufacturing technologies.

Internship


In addition to being active in ASME, I pursued and received a summer internship with an industrial air products producer. During my time as a reliability engineering intern, I was surprised at how minute improvements in reliability, like a part lasting a month longer, could save significant physical and fiscal resources. This realization made me further value the importance of improvements made possible through academic research.

Groupwork


Teamwork has been an important part of the engineering curriculum at LSU. Multiple group projects and labs have created opportunities to divide up work between team members, synergize the various skill sets of team members, and ultimately make a final product better than the individual parts could have created. The Sophomore Design project was the first real team project I encountered. Our group created a design for a low-cost radio-controlled UAV that would be able to pick up and deposit a payload of a camera for wildlife studies. Currently, I am the group leader for a multi-disciplinary senior design project to build a metal powder mixer to integration into a selective laser melting system (read: metal 3-D printer).

NSF I-Corps


During the summer of 2015 I co-authored a successful NSF Innovation Corps (I-Corps) grant proposal, for which I served as the Entrepreneurial Lead. Participation in this program gave me an education in how to startup a business and the complexity of transferring academic research into marketable technologies. I have followed companies like MakerBot as they turned a technology into a successful business, and the mindset to help improve people’s lives through technology greatly appeals to me. Research with Dr. Butler in Chemistry at LSU had led to the development of quality assessment algorithms for 3-D printed parts, which appeared to have uses in industrial and commercial settings. Through one hundred interviews with potential customers across the country, and weekly progress presentations, I gained invaluable communication and marketing skills, and the knowledge necessary to determine how our technology could benefit industry. The interviews also provided many key insights into needs of the additive manufacturing industry that are directing my planned graduate research.

Communication Workshop


Interview with professor

Interviewing Engligh professor about communication with students

During my time as an Residential Assistant, I developed a presentation to help my residents—mostly freshman—become more comfortable with talking to professors and more aware of what great networking opportunities they had while they were at LSU. In developing this presentation I worked with Boz Bowles and Becky Carmichael in the Engineering and Sciecne Communication Studios to make it interesting and effective. As part of this project, I:

  • Interviewed professors to figure out what were common communication mistakes students made.
  • Developed and led multiple workshops.
  • Arranged for professors to have casual conversations with students after the presentation.

The presentation slides can be found here. Please feel free to use as the basis for any similar presentations, and contact me if you would like further information.

Scanning Electron Microscopy


Cyclammina SEM Image

SEM image of Cyclammina shell

Energy Dispersion Spectroscopy imaging of foraminifera shell

Energy Dispersion Spectroscopy imaging of foraminifera shell

While taking an Advanced Materials Analysis course, I completed an additional project to investigate various small foraminifera and cyclammina samples obtained by the geography department. This investigation involved using both standard Scanning Electron Microscopy (SEM) and Energy Dispersion Spectroscopy (EDS) techniques. The goal was to correlate the elemental composition of the fossils found by EDS with data obtained by analyzing k-edge peaks in x-ray tomography.

A copy of the report can be read here. Please contact me before reproducing this work, or if you would like more information.