9 Results for:
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Structured Glass-Ceramic Scintillators
The Problem: For portal imaging at MeV energies, electronic portal imaging devices (EPIDs) based on indirect flat panel detector (I-FPD) technology, as depicted below, have become standard. The highest-performing I-FPDs that are currently available have very low (~1%) detective quantum efficiency (DQE) performance at MeV energies. This limitation is... (read more) -
Biomimetic Topology Optimization and Robotic Fabrication of 3-D Printed High-Performance Construction Systems
Biomimetic Topology Optimization and Robotic Fabrication of 3-D Printed High-Performance Construction Systems The Problem: Conventional construction methods produce a large amount of global waste, which causes major negative financial and environmental impacts on the global economy. 3D printing offers innovative alternatives to conventional... (read more) -
Micro Scalable Thrusters for Adaptive Mission Profiles in Space
The Problem: State-of-the-art electrospray-based micro-propulsion thrusters for Cubesats are designed around arrays of sharp micro-emitters protruding directly into space. These emitters are responsible for generating the intense electric fields needed to electrospray a propellant and generate thrust. Sharper emitters require lower voltages to operate,... (read more) -
A Charge Pump Gate Drive for SiC MOSFETs to Reduce Switching Losses
The Problem:Compared to other transistors, silicon carbide (SiC) MOSFETs have improved properties due to lower conduction loss and specific capacitance and higher switching speed and maximum junction temperature. However, high turn-on switching losses due to lower transconductance remains a problem; thus, it is still difficult to implement SiC MOSFETs... (read more) -
Low-Density Syntactic Foam for Material Extrusion Additive Manufacturing
The Problem: Materials with low density, high strength, and high stiffness are desirable for many applications. Cellular materials like syntactic foams possess high compressive strength and stiffness at an extremely low density. 3D-printable foams would assist in creating a novel class of 3D-printed hybrid materials and structures with unprecedented... (read more) -
Metallic Nanowire Structure for Bioactive Filtration
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3D Printed Ergonomic Face Shield
The Current Problem:There is a need for a 3D printed protective face shield for doctors, nurses, and healthcare professionals in the front lines. Currently, this is urgently needed for those responding to the COVID-19 pandemic.The Solution: The face shield design features an ergonomic, comfortable head temple that doesn’t require an elastic band,... (read more) -
Manufacture of Carbon Fiber Intermediate Products In-Line with Carbon Fiber Production
The Problem:Carbon fiber composite materials have expanded significantly over the past 30 years into numerous application areas. However, continued growth is limited due to high costs of the materials and the cost to produce intermediate products such as pre-impregnated tapes and compounded molding pellets that are needed for downstream application... (read more) -
Dynamic Mixer for 3D Printing Fiber-Containing Reactive Polymer Systems
The Problem:Large-scale additive manufacturing (AM) of thermoset polymer composites requires mixing of fiber-containing components at the point of deposition. Traditional baffle-type passive mixers significantly increase the energy and pressure required to pump material while also limiting the fiber content in the deposited material. Passive-type mixers... (read more)