ABSTRACT
A rapid home-diagnostic test for SARS-CoV-2 was developed that automates the reagent delivery and washing steps required for an enzyme-linked immunosorbent assay (ELISA). The device is made of inexpensive polyethylene film and double-sided adhesive that is patterned, cut, and laminated together to create hollow channels. After sample is added, sample, reagents, and washing buffer are sequentially delivered to and washed from a detection zone on a nitrocellulose test strip, giving the end-user a visual readout in <15 minutes. A smartphone camera was used to capture images, and an analytical limit of detection of 35 PFU/mL was determined. When 22 untrained end-users were asked to visually identify a positive result, 95% correctly identified 150 PFU/mL and above as positive. © 2021 MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.
ABSTRACT
This paper presents a novel unique microstrip fractal patch antenna with a COVID-19 shape designed for wireless applications. The COVID-19 antenna is a compact, miniature size, multiband, low weight, and low-cost patch antenna;the demonstrated patch antenna, simulated using the HFSS software program, consists of a circular printed patch with a radius of 0.4 cm surrounded by 5 pairs of crowns. The antenna is implemented on a double-sided copper plate with an FR4-epoxy substrate of 1 × 1 cm2 area and 1.6 mm thickness. This small patch operates and resonates on two frequencies 7.5 GHz and 17 GHz within C and Ku bands, respectively. The simulated and measured gains were respectively 0.8 dB and 0.2 dB at the lower frequency and 2.21 dB and 2 dB at the higher frequency. A coaxial probe feeding method is used in the simulation, and printed prototypes showed excellent consistency between measured and simulated resonance frequencies. © 2022, Electromagnetics Academy. All rights reserved.