93 citations · 302 across the 13 of their papers we have counts for
13 papers
Synthetic-to-real Composite Semantic Segmentation in Additive Manufacturing
Aliaksei Petsiuk, Harnoor Singh, Himanshu Dadhwal +1
The application of computer vision and machine learning methods in the field of additive manufacturing (AM) for semantic segmentation of the structural elements of 3-D printed prod…
Towards Smart Monitored AM: Open Source in-Situ Layer-wise 3D Printing Image Anomaly Detection Using Histograms of Oriented Gradients and a Physics-Based Rendering Engine
Aliaksei Petsiuk, Joshua M. Pearce
This study presents an open source method for detecting 3D printing anomalies by comparing images of printed layers from a stationary monocular camera with G-code-based reference i…
Open source disease analysis system of cactus by artificial intelligence and image processing
Kanlayanee Kaweesinsakul, Siranee Nuchitprasitchai, Joshua M. Pearce
There is a growing interest in cactus cultivation because of numerous cacti uses from houseplants to food and medicinal applications. Various diseases impact the growth of cacti. T…
Open Source 3-D Filament Diameter Sensor for Recycling, Winding and Additive Manufacturing Machines
Aliaksei L. Petsiuk, Joshua M. Pearce
To overcome the challenge of upcycling plastic waste into 3-D printing filament in the distributed recycling and additive manufacturing systems, this study designs, builds, tests a…
Open Source Computer Vision-based Layer-wise 3D Printing Analysis
Aliaksei L. Petsiuk, Joshua M. Pearce
The paper describes an open source computer vision-based hardware structure and software algorithm, which analyzes layer-wise the 3-D printing processes, tracks printing errors, an…
Optimal Design of Thin-film Plasmonic Solar Cells using Differential Evolution Optimization Algorithms
Ankit Vora, Satyadhar Joshi, Arun Matai +2
An approach using a differential evolution (DE) optimization algorithm is proposed to optimize design parameters for improving the optical absorption efficiency of plasmonic solar…
Multi-resonant silver nano-disk patterned thin film hydrogenated amorphous silicon solar cells for Staebler-Wronski effect compensation
Ankit Vora, Jephias Gwamuri, Joshua M. Pearce +2
We study polarization independent improved light trapping in commercial thin film hydrogenated amorphous silicon (a-Si:H) solar photovoltaic cells using a three-dimensional silver…
Exchanging Ohmic Losses in Metamaterial Absorbers with Useful Optical Absorption for Photovoltaics
Ankit Vora, Jephias Gwamuri, Nezih Pala +3
Using metamaterial absorbers, we have shown that metallic layers in the absorbers do not necessarily constitute undesired resistive heating problem for photovoltaics. Tailoring the…
The Effect of Hybrid Photovoltaic Thermal Device Operating Conditions on Intrinsic Layer Thickness Optimization of Hydrogenated Amorphous Silicon Solar Cells
M. J. M Pathak, K. Girotra, S. J. Harrison +1
Historically, the design of hybrid solar photovoltaic thermal (PVT) systems has focused on cooling crystalline silicon (c-Si)-based photovoltaic (PV) devices to avoid temperature-r…
Expanded microchannel heat exchanger: design, fabrication and preliminary experimental test
David C. Denkenberger, Michael J. Brandemuehl, Joshua M. Pearce +1
This paper first reviews non-traditional heat exchanger geometry, laser welding, practical issues with microchannel heat exchangers, and high effectiveness heat exchangers. Existin…
Effects on Amorphous Silicon Photovoltaic Performance from High-temperature Annealing Pulses in Photovoltaic Thermal Hybrid Devices
M. J. M. Pathak, J. M. Pearce, S. J. Harrison
There is a renewed interest in photovoltaic solar thermal (PVT) hybrid systems, which harvest solar energy for heat and electricity. Typically, a main focus of a PVT system is to c…
Effects of Substrate Temperature on Indium Gallium Nitride Nanocolumn Crystal Growth
S. Keating, M. G. Urquhart, D. V. P. McLaughlin +1
Indium gallium nitride films with nanocolumnar microstructure were deposited with varying indium content and substrate temperatures using plasma-enhanced evaporation on amorphous S…
Analytical Model for the Optical Functions of Indium Gallium Nitride with Application to Thin Film Solar Photovoltaic Cells
D. V. P. McLaughlin, Joshua M. Pearce
This paper presents the preliminary results of optical characterization using spectroscopic ellipsometry of wurtzite indium gallium nitride (InxGa1-xN) thin films with medium indiu…