Engineering Commons^™

Formulation And Aerosol Jet Printing Of Nickel Nanoparticle Ink For High-Temperature Microelectronic Applications And Patterned Graphene Growth, Nicholas Mckibben, Michael Curtis, Olivia Maryon, Mone’T Sawyer, Maryna Lazouskaya, Josh Eixenberger, Zhangxian Deng, David Estrada

Materials Science and Engineering Faculty Publications and Presentations

Aerosol jet printing (AJP) is an advanced manufacturing technique for directly writing nanoparticle inks onto target substrates. It is an emerging reliable, efficient, and environmentally friendly fabrication route for thin film electronics and advanced semiconductor packaging. This fabrication technique is highly regarded for its rapid prototyping, the flexibility of design, and fine feature resolution. Nickel is an attractive high-temperature packaging material due to its electrical conductivity, magnetism, and corrosion resistance. In this work, we synthesized nickel nanoparticles and formulated an AJP ink, which was printed on various material surfaces. Thermal sintering experiments were performed on the samples to explore the …

Upper Limb Tensegrity Exoskeleton, Emily Mendyke, Sha'anan Levy, Alan Zhang

College of Engineering Summer Undergraduate Research Program

Tensegrity structures are composed of stiff rods and elastic cables suspended in a flexible tension network. Their inherent properties have several key advantages when used in assistive medical devices such as supportive braces or rehabilitation exoskeletons: 1) the lightweight and natural compliance reduces the power consumption required to operate the system; 2) the system stiffness and pretension can be individually tuned to accommodate the user’s needs; and 3) the impact-resistant properties can protect users in the event of collisions and falls. This project explores the design space of assistive tensegrity devices to augment human dexterity in the upper limb. Suitable …

Board 417: Understanding Capstone Design Activity Engagement In Mechanical Engineering, Elliot Clement, Sarah Oman, James L. Huff Ph.D., Shane A. Brown P.E.

Engineering and Physics Faculty Research and Publications

This paper summarizes the initial findings of our ongoing work studying design activity engagement for engineering students and professionals. With this introductory study, we aim to gain a better understanding of how engineering students engage in capstone design activities, and their motivations for doing so. This paper presents the initial findings from semi-structured interviews with three engineering students and will constitute the base for further research focusing on student and professional engagement in design activity across different engineering fields.

Leadership And Project Management In Engineering: Baja Tube Bender, Maysyn Tm Sorensen

Honors Theses

Typical coursework for Undergraduate Mechanical Engineering students does not deeply focus on project management and leadership. Detailed in the following documentation is review of my Mechanical Engineering Senior Design capstone project as well as analysis of final presentations of other capstone projects. The Senior Design capstone projects spanned both semesters of the ‘22-’23 academic school year. After the first semester of my project I produced a post-mortem report to analyze the project’s progress and suggest improvements for the project, design, and team interaction. These improvements were compiled into an action plan and implemented in the spring semester. When the project …

Exploring Methods For Recycling Filament Waste In 3d Printing, Max Rios Carballo

Publications and Research

The goal of the current study is to investigate cutting-edge techniques for recycling filament waste from 3D printing procedures. Appropriate waste management techniques are required to reduce this trash's harmful environmental consequences. The goal of the project is to look at new methods for recycling filament waste in order to minimize disposal and encourage reuse. To acquire data from pertinent papers and research, a thorough literature review methodology was used. The findings show that this issue may be resolved utilizing a variety of recycling techniques, including shredding, melting, and re-extrusion. The type of filament waste and the intended goal will …

Exploring The Application Of Chatgpt In Mechanical Engineering Education, Joan Puig-Ortiz, Rosa Pàmies-Vilà, Lluïsa Jordi Nebot

Practice Papers

The use of language models such as ChatGPT in the field of engineering has gained popularity in recent years due to their ability to assist engineers in their projects and tasks. In this study, we evaluated the effectiveness of ChatGPT in supporting students' learning in the Mechanism and Machine Theory (MMT) subject. The study involved participants who were asked to interact with ChatGPT to obtain concept clarification and factual information related to MMT.

Our results show that the majority of participants were familiar with ChatGPT and had used it for academic or technical questions. They also found it easy to …

Digitalisation As An Opportunity For Women In Stem: Researching The Nexus Of School, University And Labour Market, Yves Jeanrenaud, Anna-Kathrin Wimmer

Practice Papers

In Germany, women are still dramatically underrepresented in the fields of STEM, especially in engineering: less than 25 percent of engineering students are female. Correspondingly underrepresented are women in engineering positions, too. Research has shown that diversity in the work force is crucial to develop successful solutions for a complex and sustainability-oriented world.

Therefore, our ongoing research project (01FP22M01), funded by the Federal Ministry of Education and Research (BMBF), focusses on the underrepresentation of women in STEM, especially in mechanical and plant engineering. Using mixed methods of qualitative interviews and quantitative online surveys with female pupils, students and employees, as …

Nine Years Of Systematic Cad Course Development: What Did We Learn?, Kaur Jaakma, Panu Kiviluoma

Practice Papers

Computer-Aided Design (CAD) plays a vital role in the curriculums of mechanical engineering degree programs, empowering students to conceptualize and visualize their designs, thus enhancing their abilities as engineers. This abstract presents the implementation of a multi-CAD course conducted between 2014 and 2022, catering to hundreds of students from diverse disciplines, including mechanical and civil engineering. Throughout the course, student feedback was systematically collected to assess learning outcomes and measure the effectiveness of different learning tools and methods.

The course employed a range of tools, including automatically graded quizzes and a dedicated CAD model assessment system, which not only lightened …

Design Practice Book Of Mt-293 Parametric Computer-Aided Design, Raymond K.F. Lam, Md. Shahadat Hossain

Open Educational Resources

The design practice book is written for students who are enrolled in the MT-293 Parametric Computer-Aided Design course at CUNY Queensborough Community College. The book provides step-by-step instructions on creating two-dimensional models and three-dimensional models using SolidWorks software. The book also include laboratory assignments.

Oblique Packing And Tunable Excitonic Coupling In Dna-Templated Squaraine Rotaxane Dimer Aggregates, Matthew S. Barclay, Christopher K. Wilson, Simon K. Roy, Olga A. Mass, Azhad U. Chowdhury, Jonathan S. Huff, Daniel B. Turner, Paul H. Davis, Bernard Yurke, William B. Knowlton, Jeunghoon Lee, Ryan D. Pensack

Materials Science and Engineering Faculty Publications and Presentations

When molecules are aggregated such that their excited states form delocalized excitons, their spatial arrangement, or packing, can be coarsely controlled by templating and finely controlled by chemical substitution; however, challenges remain in controlling their packing on intermediate length scales. Here, we use an approach based on mechanically interlocked molecules to promote an elusive oblique packing arrangement in a series of three squaraine rotaxane dimers. We template the squaraine rotaxane dimers using DNA and observe two excitonically split bands of near-equal intensity in their absorption spectra – a distinct signature of oblique packing, validated by theoretical modeling of the experimental …

Wake Bifurcations Behind Two Circular Disks In Tandem Arrangement, Jianzhi Yang, Xiaowei Wu, Minghou Liu, Changjian Wang, Yuxin Wu, Zhihe Shen

Mechanical and Materials Engineering Faculty Publications and Presentations

The wake bifurcations behind two circular disks in tandem arrangement are investigated through numerical simulations. The separation distance between the disks, S/d, is chosen at 1, 2, 4, and 6, and the Reynolds number, Re, lies in the range of 100 Re 500. The wake dynamics are examined in terms of the flow structures as well as drag and lift coefficient characteristics. Seven main wake regimes are observed in the considered (Re, S/d) space: steady state (SS), Zig-zig (Zz) mode, standing wave mode, periodic state with reflectional symmetry breaking (RSB), periodic state with double-helical (DH) structures shedding, periodic state with …

Ballasting System For An Autonomous Underwater Vehicle, Noura Rayes, Bahram Nassersharif, Zach Champney, Kyle Alessandro, Jason Mirandou

Senior Honors Projects

NOURA RAYES (Mechanical Engineering); Ballasting System for an Autonomous Underwater Vehicle Sponsor: Bahram Nassersharif (Mechanical Engineering)

Over the last year, our Mechanical Engineering Capstone team, Nautilus, has been working to design a ballasting system for various Autonomous Underwater Vehicles (AUVs) sponsored by Raytheon Technologies. Common AUV systems are used for a wide range of applications from environmental monitoring, oceanic exploration, to data collection. AUVs also have many technical advantages that make underwater tasks more efficient, cost-effective, and generally safer. Raytheon Technology, specifically, is looking to improve their existing ballasting mechanism for their AUVs to use for military defense. For this …

Expanding Faculty-Student Interactions In Statics: An Exploratory Study Of A Statics Course With Learning Assistants, Valerie V. Bracho Perez

FIU Electronic Theses and Dissertations

Statics is one of the first fundamental engineering classes within the ME undergraduate curriculum, in which a student’s performance in the course can impact their overall academic success. Recent efforts to enhance students learning in fundamental engineering courses have included integrating Learning Assistants (LAs), undergraduate peers who have previously excelled in the course, into the instructional team of the course. The purpose of this Master's thesis is to explore the enactment of a Statics classroom with LAs, the interactions that characterize it, and the impact it has on the students and instructional teams. A qualitative case study of a Statics …

Influence Of Hydrophobicity On Excitonic Coupling In Dna-Templated Indolenine Squaraine Dye Aggregates, Olga A. Mass, Christopher K. Wilson, German Barcenas, Lan Li, Bernard Yurke, William B. Knowlton, Ryan D. Pensack, Jeunghoon Lee

Materials Science and Engineering Faculty Publications and Presentations

Control over the strength of excitonic coupling in molecular dye aggregates is a substantial factor for the development of technologies such as light harvesting, optoelectronics, and quantum computing. According to the molecular exciton model, the strength of excitonic coupling is inversely proportional to the distance between dyes. Covalent DNA templating was proved to be a versatile tool to control dye spacing on a subnanometer scale. To further expand our ability to control photophysical properties of excitons, here, we investigated the influence of dye hydrophobicity on the strength of excitonic coupling in squaraine aggregates covalently templated by DNA Holliday Junction (DNA …

Cool Thermal Energy Storage: Water And Ice To Alternative Phase Change Materials, Sandra K. S. Boetcher

Publications

Cool thermal energy storage has a long history dating back to ancient times with modern developments beginning in the mid-nineteenth century where blocks of ice were cut from frozen lakes for cooling applications. Today, the prevalent mode of thermal energy storage is the utilization of ice tanks in commercial buildings for peak shaving and load shifting. In this chapter, a summary of different types of water/ice thermal energy storage systems is provided; an overview of alternative phase change materials for use in cool thermal energy storage is given; and alternative phase change material thermal energy systems, their implementation, challenges, and …

Solution-Processed Flexible Broadband Zno Photodetector Modified By Ag Nanoparticles, N. P. Klochko, K. S. Klepikova, I. V. Khrypunova, V. R. Kopach, I. I. Tyukhov, S. I. Petrushenko, S. V. Dukarov, V. M. Sukhov, M. V. Kirichenko, A. L. Khrypunova

Faculty Research, Scholarly, and Creative Activity

In this work, we present flexible broadband photodetectors (PDs) fabricated by a deposition of nanostructured zinc oxide (ZnO) films on polyimide (PI) substrates by using cheap and scalable aqueous method Successive Ionic Layer Adsorption and Reaction (SILAR). In order to increase the long-wavelength absorption of the nanostructured ZnO layer, we created its intrinsic defects, including oxygen vacancies by post-treatment at 300 °C in vacuum and thus the light-sensitive material ZnO/PI was obtained. Then we applied silver nanoparticles (Ag NPs) from a silver sol onto a nanostructured ZnO film, which were visualized using SEM in the form of spheres up to …

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Viking Ax Cast by Students

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Dr. Cesmeci Awarded $1.1 mil DOE Grant
• Dr. Cesmeci Seeking to Student Researchers for DOE Grant

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Undergrad Researcher to Present at National Conference

College Of Engineering News, Georgia Southern University

Allen E. Paulson College of Engineering & Computing News (2012-2023)

• GS engineering student competes on Netflix baking show

College Of Engineering News, Georgia Southern University

Allen E. Paulson College of Engineering & Computing News (2012-2023)

• 2021-22 Undergraduate Research Awards Announced

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Department Hosts Summer Camp for HS Students

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Two Student Researchers Receive Engineering Awards

First-Principles Studies Of Substituent Effects On Squaraine Dyes, German Barcenas, Austin Biaggne, Olga A. Mass, Christopher K. Wilson, Ryan D. Pensack, Jeunghoon Lee, William B. Knowlton, Bernard Yurke, Lan Li

Materials Science and Engineering Faculty Publications and Presentations

Dye molecules that absorb light in the visible region are key components in many applications, including organic photovoltaics, biological fluorescent labeling, super-resolution microscopy, and energy transport. One family of dyes, known as squaraines, has received considerable attention recently due to their favorable electronic and photophysical properties. In addition, these dyes have a strong propensity for aggregation, which results in emergent materials properties, such as exciton delocalization. This will be of benefit in charge separation and energy transport along with fundamental studies in quantum information. Given the high structural tunability of squaraine dyes, it is possible that exciton delocalization could be …

Ball-On-Ring Test Validation For Equibiaxial Flexural Strength Testing Of Engineered Ceramics, Adrianna E. Lupercio, Ehsan Moshkelgosha, Riley C. Winters, Cayden Doyle, Mahmood Mamivand, Andrew T. Nelson, Brian J. Jaques

Materials Science and Engineering Faculty Publications and Presentations

The validation of a ball-on-ring, equibiaxial flexural strength method to obtain the transverse rupture strength (TRS) of right cylindrical ceramic specimens was performed in this study. Validation of the test method was achieved using commercially available engineered high purity alumina disks and finite element (FE) model analysis. The validated fixture was then used to obtain the TRS and Weibull statistical analysis of MgO-partially stabilized zirconia (MSZ) and Y₂O₃-partially stabilized zirconia (YSZ) ceramic disks. TRS data for alumina, MSZ, and YSZ agreed with the TRS values reported in the literature. A statistically relevant number of samples (N …

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Graduate Student Wins Excellence in Graduate Research Award

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Faculty and Students Mentor High School Design Competition

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Graduate Student to Present at Posters on the Hill

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• 2021 Engineering Design Challenge

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering News (2013-2023)

• Graduate Student Lands Position as Race Engineer