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Full-Text Articles in Physical Sciences and Mathematics
Seeing The Invisible: Projects On Flow Imaging From The Fluid Mechanics Lab, Keith Stein
Seeing The Invisible: Projects On Flow Imaging From The Fluid Mechanics Lab, Keith Stein
Day of Scholarship
Shadowgraph and schlieren imaging are popular flow visualization techniques because, despite the straightforward setup and reliance on very simple geometrical optics principles, they provide powerful methods for capturing high-quality images of what would otherwise be invisible flow phenomena. Application of these methods along with high-speed video recording can reveal detailed pictures of fast flow events that may last for just a fraction of a millisecond. These techniques are being utilized in the Bethel Fluid Mechanics lab course (PHY423/ENR423) and in a number of student-faculty research projects. We present snapshots of a few recent student-faculty projects utilizing shadowgraph and schlieren imaging.
Glow Soap Faucets For Medical Settings - Partnering With A Startup, James Christenson
Glow Soap Faucets For Medical Settings - Partnering With A Startup, James Christenson
Day of Scholarship
Hand hygiene is critical in many sectors of society and particularly in medical settings. Abluo is a startup company that designed an automated faucet with a black light and glowing soap. This allows users to visualize soap coverage during lathering and soap removal during rinsing. A study run at Bethel University found that users had 2.7x fewer bacteria on their hands after using an Abluo glow soap faucet system compared to a standard handwash. A glow soap faucet system was also installed at Regions Hospital (St. Paul, MN). The response from medical professionals was overwhelmingly positive, with 95% agreeing with …
Search For Pair Production Of Vector-Like Quarks In Cms Run 2 Data, Julie Hogan
Search For Pair Production Of Vector-Like Quarks In Cms Run 2 Data, Julie Hogan
Day of Scholarship
The Compact Muon Solenoid experiment (CMS) at the CERN Large Hadron Collider records proton-proton collision data in order to study the particles and forces that exist in very high energy conditions. The 2012 discovery of the Higgs boson was a triumph for the field of particle physics, but pointed toward the probably existence of unknown high-mass particles. Vector-like quarks (VLQs) are a possible type of high-mass fermions, and their decays to lighter particles create exciting detector signatures. This search utilizes deep machine learning to both identify decay products of VLQs in the detector and to separate potential signal events from …
A New Algorithm For Determining Energy And Charge Deposition In Spacecraft Insulators, Brian P. Beecken
A New Algorithm For Determining Energy And Charge Deposition In Spacecraft Insulators, Brian P. Beecken
Day of Scholarship
Space if filled with highly energetic electrons, many of which originate from the sun. All earth satellites must have insulators. Unfortunately, the insulators absorb both the electrons and the energy that they are carrying. Once sufficient charge accumulates, it is released in a sudden and destructive pulse which can destroy the onboard electronics and solar panel. The depth of penetration of the electrons in the insulators varies with incident energy, flux, and material. Determining the deposition profiles is key to understanding and mitigating the threat to satellites.
Nano-Optics: Light, Matter, And Single-Molecule Imaging, Nathan Lindquist
Nano-Optics: Light, Matter, And Single-Molecule Imaging, Nathan Lindquist
Day of Scholarship
Light and matter interact in fascinating ways at the nano-scale, allowing scientists to image, probe, analyze, or manipulate single molecules. This interdisciplinary field has opened the doors to a vast array of insights and applications, including single-molecule sensors, advanced photonic devices, and novel forms of microscopy. This poster summarizes work done at Bethel over the past few years in the areas of nano-imaging, nano-sensing, and nano-manipulation.
Particle Discovery Lab For Education & Outreach, Julie Hogan
Particle Discovery Lab For Education & Outreach, Julie Hogan
Day of Scholarship
The Compact Muon Solenoid experiment (CMS) at the CERN Large Hadron Collider records proton-proton collision data in order to study the particles and forces that exist in very high energy conditions. CMS releases data to the public after several years of internal analysis. This data has a rich history of use for middle school or high school education, but is not widely used by college students in the US. Bethel students and I have built an intermediate-level undergraduate lab experience in which students reinforce physics learning objectives and learn statistical data analysis skills while "discovering" a particle. A short form …
Creation And Development Of A Next Generation Simulation Model For Spacecraft Charging, Brian P. Beecken
Creation And Development Of A Next Generation Simulation Model For Spacecraft Charging, Brian P. Beecken
Day of Scholarship
Spacecraft, particularly satellites, endure the bombardment of high-energy electrons. These electrons charge up the insulators on the spacecraft. Eventually, the charge commonaly can exceed 100,000 volts. The result is an electrostatic discharge which will potentially cripple the spacecraft. A computer simulation model has been developed that will predict if and when the discharge will occur.
Computational Chemistry At Bethel, Rollin King
Computational Chemistry At Bethel, Rollin King
Day of Scholarship
In the 21st century, computational methods play a significant role in all areas of chemistry, ranging from small-molecule spectroscopy to drug design. Research in computational chemistry is multidisciplinary, involving the application of physics, math, and computer science to address questions and challenges in chemistry. This poster will survey the field, highlight the outstanding work of Bethel students, and present a couple of ongoing projects.