Publications by authors named "Igor Paprotny"

Unlabelled: The recent COVID-19 pandemic has underscored the danger of airborne viral pathogens. The lack of model systems to study airborne pathogens limits the understanding of airborne pathogen distribution as well as potential surveillance and mitigation strategies. In this work, we develop a novel model system to study airborne pathogens using virus-like particles (VLPs).

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The recent COVID-19 pandemic has underscored the danger of airborne viral pathogens. The lack of model systems to study airborne pathogens limits the understanding of airborne pathogen distribution, as well as potential surveillance and mitigation strategies. In this work, we develop a novel model system to study airborne pathogens using virus like particles (VLP).

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Article Synopsis
  • COVID-19, caused by SARS-CoV-2, has highlighted the risk of airborne virus transmission, particularly in settings like dental clinics with aerosol-generating procedures.
  • A large-scale numerical simulation in a dentistry clinic examined how evaporating droplets from ultrasonic scaling procedures disperse, considering factors like droplet size, residence time, and surface contamination.
  • Findings indicated that aerosols can linger for over 7 minutes and travel more than 24 meters, raising concerns about contamination beyond patient areas and emphasizing the need for improved disinfection protocols in dental practices.
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This paper presents modeling, designs, and initial experimental results demonstrating successful untethered microscale flight of stress-engineered microscale structures propelled by thermal forces. These MEMS Microfliers are 300 μm×300 μm×1.5 μm in size and are fabricated out of polycrystalline silicon using a surface micromachining process.

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We present control strategies that implement planar microassembly using groups of stress-engineered MEMS microrobots (MicroStressBots) controlled through a single global control signal. The global control signal couples the motion of the devices, causing the system to be highly underactuated. In order for the robots to assemble into arbitrary planar shapes despite the high degree of underactuation, it is desirable that each robot be independently maneuverable (independently controllable).

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