Bulletin of the American Physical Society
Fall 2021 Meeting of the APS New England Section
Volume 66, Number 9
Friday–Saturday, October 22–23, 2021; Virtual; Eastern Time
Session B01: Contributed Session II |
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Chair: Richard Price, MIT |
Friday, October 22, 2021 6:30PM - 6:45PM |
B01.00001: A New Frontier for the Quantum Measurement Problem: The Humble Cloud Chamber Jonathan Schonfeld We are taught that quantum wavefunctions evolve smoothly until measurements, when they collapse. Making microscopic sense of this contrast is the measurement problem. Analysis of the microphysics underlying cloud chamber track initiation from radioactive decays shows that apparent collapse can be an idealization of a more complex but smooth process. We test this analysis with opportunistic data found in pedagogical video available on the internet. The results suggest a modification to the standard Born probability rule. [Preview Abstract] |
Friday, October 22, 2021 6:45PM - 7:00PM |
B01.00002: Electrical Properties of Liquid Crystal Cells David Webb, Yuriy Garbovskiy Liquid crystals are ubiquitous electro-optical materials. Their applications include liquid crystal displays, tunable optical components such as filters, lenses, waveplates, and shutters, to name a few. As a rule, the tunability of liquid crystal devices is achieved by applying electric fields across mesogenic materials resulting in a reorientation of liquid crystals. Ions present in liquid crystals in small quantities can alter this reorientation and compromise the overall performance of liquid crystal devices. Therefore, research into the electrical properties of liquid crystals is very important because it allows the identification of materials suitable for particular applications. Electrical properties of liquid crystals are studied using liquid crystal cells. In this talk, we discuss how interactions between ions and substrates of a liquid crystal cell can affect the measured values of DC conductivity. Because of these interactions, the measured DC conductivity of liquid crystals can depend on the cell thickness. Important information about ions in liquid crystals can be deduced by analyzing this dependence. [Preview Abstract] |
Friday, October 22, 2021 7:00PM - 7:15PM |
B01.00003: Neonatal diabetes mellitus and a review of a specific mechanism for mutation in the INS gene for human insulin on the genome using a computer model. Evidence is presented in support of further research and study of this variant. Robert Goshen, Harriet Papernick A variety of gene mutations are known to play a role in the development of diabetes mellitus in patients from the neonatal to the older adult. This study focuses on a DNA triplet involved in the translation of the preproinsulin precursor peptide (messenger) mRNA into the mature bioactive insulin protein. A successful translation of the mRNA creates a peptide chain with a length of 110 amino acids, but the failure of this triplet called the AUG start codon to properly initiate the translation could potentially yield a mutant chain that damages the pancreatic beta cells, leading to permanent neonatal diabetes disease. Our computer (MS C sharp) simulation model allows both novel and well reported genetic mutation patterns to be tested and evaluated. The results for the case of this AUG start codon are shown to merit further investigation by means of both in vitro processing and expanded collection and analysis of patient genetic information along with the data from medical records. [Preview Abstract] |
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