Johan A. Yapo, Ph.D.

Computational Chemistry and Materials Science Expert leveraging AIML for novel materials discovery

About

Johan A. Yapo is a highly motivated and passionate individual with a strong background in physical chemistry. He received his Bachelor of Science in Chemistry from the University of Illinois Urbana-Champaign in 2017 and completed his Ph.D. in Chemistry at the University of California Riverside. Throughout his academic career, Johan has been involved in various research projects and internships that have allowed him to gain hands-on experience in the field of chemistry. He has worked as a Graduate Student Researcher at UCR, where he conducted research on both developing ML models to accelerate the discovery of magnetic materials studying the structure-property relationships of novel catalysts for renewable energy storage using computational chemistry models. He also worked as a Volunteer Research Associate at the University of Illinois at Chicago, where he assisted developing AI models to predict the risk of pancreatic cancer from non-invasive means. In addition to his research experience, Johan has also held positions in industry. He worked as a Quality Control Technician II at Chemtool Incorporated, where he performed various analytical tests on raw materials and finished products to ensure quality standards were met. He also worked as a Java Developer Intern at Optum Insight, where he utilized his programming skills to develop software for data analysis. Johan has a strong passion for teaching and has been involved in various teaching and mentoring roles. He has served as a Teaching Assistant at UCR, where he assisted in undergraduate chemistry courses and provided one-on-one tutoring to students. He also worked as a Course Developer and Instructor at the UCR Office of Diversity Equity and Inclusion, where he developed and taught courses on diversity and inclusion in STEM fields. In addition to his academic and professional pursuits. He also enjoys outdoor activities such as hiking and camping, and loves to travel and explore different cultures. With his strong academic background and diverse experiences, Johan is well-equipped to make significant contributions in the field of Chemistry and Materials Science. He is dedicated to furthering his knowledge and skills and is committed to making a positive impact in both the scientific and local communities.

Education

University of California Riverside (UCR)

PhD in Physical Chemistry / 2025

University of Illinois Urbana-Champaign (UIUC)

BSc. in Chemistry / 2017

Experience

University of California, Riverside

Graduate Student Researcher / September, 2019June, 2025

Chemtool Incorporated

Quality control technician II / June, 2017July, 2019

Quality Control Technician II / June, 2017August, 2019

Applied meticulous attention to detail and instrument maintenance proficiency through regular calibrations and upkeep of sophisticated analytical equipment. Rigorously tested aerospace-grade lubricants against stringent specifications to ensure compliance with quality standards. Managed a fast-paced workflow with a cross-functional team of chemists and engineers performing up to 30 daily tests to ensure the quality and compliance of lubricants.

Optum Insight

Java developer intern / July, 2013August, 2013

UCR

Graduate Student Researcher / September, 2019June, 2025

Led the development of AIML methods to accelerate the discovery and design of novel magnetic inorganic materials focusing on predicting magnetic properties and generating actionable insights for materials development. Curated a comprehensive dataset of 8438 inorganic materials from the Materials Project Database, strategically extracting key chemical and structural descriptors for training advanced AI and Machine Learning models in a materials informatics workflow. Engineered and validated high-performance ML and AI algorithms including Graph Neural Networks (GNNs) Sequential Neural Networks (SNNs) XGBoost and Random Forest models achieving correlation coefficients of 0.90 significantly exceeding published benchmarks for similar materials prediction tasks. Executed high-throughput computational predictions on over 60000 theoretical compounds identifying 544 promising candidates for novel magnetic borides directly contributing to the data-driven design of functional materials relevant to advanced energy applications. Synthesized and characterized novel materials via arc-melting and x-ray diffraction to experimentally validate magnetic properties directly supporting the project's discovery pipeline. Contributed to an interdisciplinary team conducting ab-initio simulations to analyze catalytically active sites of inorganic materials relevant to energy applications. Bridged computational predictions with experimental efforts by providing critical computational insights that directly guided the synthesis and characterization of electro-catalysts leading to 6 peer-reviewed publications including a contribution to ACS Materials Letters. Developed a methodology to link structure-property relationships of crystalline materials to catalytic enhancement by calculating Hydrogen adsorption sites via VASP software for 10 Transition Metal Borides (TMBs) creating a robust dataset for inorganic electro-catalysts. Pioneered vacancy engineering as a novel design strategy for developing high-efficiency HER electro-catalysts through in-depth DFT and COHP bond analysis identifying key metal-metal metal-boron and boron-boron bond characteristics.

Teaching Assistant / September, 2020August, 2024

Created tailored lesson plans lectures and in-class activities for chemistry courses emphasizing inclusive pedagogical practices to support first-generation college students. Demonstrated leadership and cross-functional collaboration skills as a DEI practitioner advancing STEM accessibility and fostering an equitable research environment. Developed and implemented a rubric for teaching assistants to promote inclusive practices and equitable participation in introductory STEM laboratory courses resulting in improved student engagement and achievement.

University of Illinois at Chicago (UIC)

Volunteer Research Associate / May, 2025December

Co-developed a noninvasive biosensing device in a collaborative team of bioengineers and biochemists to enable early detection of pancreatic cancer. Engineered and deployed a machine learning pipeline utilizing Support Vector Machine (SVM) and Neural Network models to predict the risk of pancreatic cancer based on electrical impedance data of target biomarkers for biosensing applications. Expanded training dataset for neural networks by generating 3000 synthetic data points using generative AI principles leading to improved accuracy in pancreatic cancer screening.

UCR Office of Diversity Equity and Inclusion

Course Developer and Instructor / January, 2024June, 2024

Demonstrated leadership and collaboration skills as a DEI practitioner advancing STEM accessibility through the application of inclusive practices and cultural competence. Worked as part of a cross-functional team with the UCR School of Education and Office of DEI to develop curriculum and content for a new online DEI course tailored to international graduate students. Developed and delivered instructional materials to teach crucial DEI concepts to students with minimal prior experience strengthening communication and educational outreach skills.

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