Report of Contributions
Total Page:16
File Type:pdf, Size:1020Kb
2016 CAP Congress / Congrès de l’ACP 2016 Report of Contributions https://indico.cern.ch/e/CAP2016 2016 CAP Congr … / Report of Contributions **WITHDRAWN** Nanoengineeri … Contribution ID: 980 Type: Oral (Non-Student) / orale (non-étudiant) **WITHDRAWN** Nanoengineering materials: a bottom-up approach towards understanding long outstanding challenges in condensed matter science Thursday, 16 June 2016 08:30 (15 minutes) Chemists have made tremendous advances in synthesizing a variety of nanostructures with control over their size, shape, and chemical composition. Plus, it is possible to control their assembly and to make macroscopic materials. Combined, these advances suggest an opportunity to “nanoengineer” materials ie controllably fabricate materials from the nanoscale up with a wide range of controlled and potentially even new behaviours. Our group has been exploring this opportunity, and has found a rich range of material elec- tronic behaviours that even simple nano-building blocks can generate, e.g. single electron effects, metal-insulator transitions, semiconductor transistor-like conductance gating, and, most recently, strongly correlated electronic behaviour. The latter is particularly exciting. Strongly correlated electrons are known to lie at the heart of some of the most exotic, widely studied and still out- standing challenges in condensed matter science (e.g. high Tc superconductivity in the cuprates and others). The talk will survey both new insights and new opportunities that arise as a result of usingthis nanoengineering approach. The talk will also outline how such materials have provided inspiration for new technologies. Primary author: Prof. DHIRANI, Al-Amin (University of Toronto) Presenter: Prof. DHIRANI, Al-Amin (University of Toronto) Session Classification: R1-2 Strongly Correlated Systems (DCMMP) / Systèmes fortement corrélés (DPMCM) Track Classification: Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) September 29, 2021 Page 1 2016 CAP Congr … / Report of Contributions Quantitative Magnetic Resonance … Contribution ID: 981 Type: Oral (Non-Student) / orale (non-étudiant) Quantitative Magnetic Resonance Imaging of the Hippocampus in Single Transgenic Mouse Models of Alzheimer’s Disease Thursday, 16 June 2016 08:45 (15 minutes) In this study, quantitative magnetic resonance imaging (MRI) was used to determine if it could detect atrophy and microstructural changes in the hippocampus, and damage to peripheral white matter (WM) structures in mouse models of Alzheimer’s disease (AD). The aim of ourstudywasto determine if T1 relaxation, diffusion tensor imaging (DTI), and quantitative magnetization transfer imaging (qMTI) metrics could reveal changes within the hippocampus and surrounding WM struc- tures in ex vivo transgenic mouse brains with the goal of these changes being used as biomarkers for AD. Mice were either wild type controls (n=6), or had overexpression of the presenilin-1 (PS1) protein (n=6) or the amyloid precursor protein (APP) (n=6), and were imaged at 7.5 months of age using a 7T MRI system. Three coronal slices were selected in each mouse to span the hippocampus. Anatomical details visible in DTI color maps allowed delineation of hippocampal cell layers, which contained more significant differences between groups of mice than did the entire unsegmented hippocampus. This work demonstrates that multiparametric quantitative MRI methods are useful for characterizing changes within the hippocampus and surrounding WM tracts of APP and PS1 mouse models of AD. Primary authors: WHITTAKER, Heather (Biopsychology, University of Winnipeg); THIESSEN, Jonathan (Imaging Program, Lawson Health Research Institute); MARTIN, Melanie (Physics, Univer- sity of Winnipeg and Radiology University of Manitoba); BUIST, Richard (Radiology, University of Manitoba); ZHU, Shnghua (Pharmacology and Therapeutics, University of Manitoba); LI, Xin-Min (Psychiatry, University of Alberta) Presenter: MARTIN, Melanie (Physics, University of Winnipeg and Radiology University of Mani- toba) Session Classification: R1-4 Nuclear Physics in Medicine (DPMB-DNP-DIAP) / Physique nucléaire en médecine (DPMB-DPN-DPIA) Track Classification: Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB) September 29, 2021 Page 2 2016 CAP Congr … / Report of Contributions **WITHDRAWN** A nanogap, im … Contribution ID: 982 Type: Oral (Non-Student) / orale (non-étudiant) **WITHDRAWN** A nanogap, impedance microchip for sensitive and surface tunable sensing Thursday, 16 June 2016 13:15 (15 minutes) We have microfabricated and evaluated the performance of nanogap conductivity/dielectric con- stant sensors with a novel architecture. The “apertured impedance microchips” (AIM) feature aluminum metal/silicon-oxide/silicon layers, where the top metal layer has apertures and the mid- dle oxide layer has wells. This layered yet open geometry enables molecules to have accessto detection electric fields induced by a voltage applied between the top metal/bottom silicon elec- trode layers. Our design rationale surmised that the AIM device’s large footprint area and thin nanoscale oxide layer should enable impedance detection of molecules with high sensitivity in a variety of solvents. The present study confirms this hypothesis and explores the effects thatsimple surface modifications have on the device’s response. Specifically, devices were incorporated into a high performance liquid chromatography (HPLC) system already equipped with an ultra-violet–visible (UV–vis) detector. A range of analytes was injected using both normal and reverse phase modes; and the signals generated by each microchip device and UV–vis detector were recorded simultaneously and compared. The microchip devices’ responses were found to vary for analytes according to the surface modification used. To demon- strate the novel dielectric constant capability of AIM, as a case study, an AIM device was used to detect left and right handed versions a synthesized chiral molecule separated by a chiral column using an insulating eluent, namely hexanes/isopropanol. Primary author: DHIRANI, Al-Amin (University of Toronto) Presenter: DHIRANI, Al-Amin (University of Toronto) Session Classification: R2-6 General Instrumentation II (DIMP) / Physique générale des instruments II (DPIM) Track Classification: Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM) September 29, 2021 Page 3 2016 CAP Congr … / Report of Contributions Innovative use of collaborative vid … Contribution ID: 983 Type: Oral (Non-Student) / orale (non-étudiant) Innovative use of collaborative video annotation system in physics teacher education Thursday, 16 June 2016 09:30 (15 minutes) At the University of British Columbia (UBC) we educate 8-14 future physics teachers annually. Most of them already have B.Sc. degrees in physics or related fields, while some are a completing the B.Sc. concurrently. As part of their secondary teacher education program, teacher-candidates participate in a 3-credit physics methods course taught by the author. Its goal is to help teacher- candidates to acquire Pedagogical Content Knowledge (the knowledge about physics teaching). In order to practice its implementation in a classroom-like situations, teacher-candidates teach four 10-15 minute long mini-lessons during the course. This practice is especially important, as in order to complete the teacher education program, they have to complete successfully a school-based 13- week practicum where they teach real students (under teacher’s supervision). To achieve this goal, we started using Collaborative Learning Annotation System (CLAS) (http://ets.educ.ubc.ca/clas/) developed by our UBC colleagues and freely available to the students. CLAS allows physics teacher- candidates to upload videos of their mini-lessons and collaboratively comment and reflect on them. As a result, every teacher-candidate received multiple feedback about their lessons from their peers, the course Teaching Assistant, and the course instructor. During the feedback stage, all of us commented on mini-lessons emphasizing their strengths and suggesting areas for improvement. Then teacher-candidates were asked to incorporate relevant suggestions and reteach the lessons. From teacher-candidates’ feedback and our observations, we found CLAS to be extremely useful for preparing future physics teachers. It is especially valuable considering English is not the first language for many of our teacher-candidates. We hope that other faculty members involved in physics (and in general mathematics and science) teacher education will consider incorporating CLAS in their courses. Primary author: MILNER-BOLOTIN, Marina (The University of British Columbia) Presenter: MILNER-BOLOTIN, Marina (The University of British Columbia) Session Classification: R1-1 Interactive Teaching: Teaching with Technology (DPE) / En- seignement interactif et à l’aide de la technologie (DEP) Track Classification: Physics Education / Enseignement de la physique (DPE-DEP) September 29, 2021 Page 4 2016 CAP Congr … / Report of Contributions A 16-Microcantilever Array Sensin … Contribution ID: 984 Type: Oral (Non-Student) / orale (non-étudiant) A 16-Microcantilever Array Sensing System for the Rapid and Simultaneous Detection of Analyte Thursday, 16 June 2016 13:30 (15 minutes) A new 16 microcantilever sensor system for performing sensing experiments in liquid or gas will be presented. The system uses two 8-microcantilever