Events: Centre: Physics Centrehttp://www.chalmers.se/sv/om-chalmers/kalendariumUpcoming events at Chalmers University of TechnologyWed, 19 Jan 2022 16:17:37 +0100http://www.chalmers.se/sv/om-chalmers/kalendariumhttps://www.chalmers.se/en/departments/physics/calendar/Pages/Master-thesis-presentation-Nasrin-Mosavi-220127.aspxhttps://www.chalmers.se/en/departments/physics/calendar/Pages/Master-thesis-presentation-Nasrin-Mosavi-220127.aspxNasrin Mosavi, TKMAS<p>PJ, seminar room, Kemigården 1, Fysik Origo</p><p>​Title of Master thesis: Investigation of Long Bow Vibrations</p><strong>Abstract:</strong><br />The work was about mapping which vibrations occur in bows and how they could affect accuracy. The work was carried out during the Corona pandemic, which meant limited resources for experimental measurement and the experiments were done in an office environment and not in the field. If possible, it was important to find applicable theory behind all experimental results. One goal was to measure with simple means and really understand what was to be measured and how. All experiments and measurements were done on a recurve bow. The measurements therefore began with recording sound using a microphone. Accelerometers were used for further measurements. To increase the understanding of these, a known source of vibration was needed. Thereby, a loudspeaker was modified with the possibility of attaching accelerometers in the middle of the diaphragm. The loudspeaker was powered by a signal generator via a power amplifier. A PC oscilloscope was used to record and interpret signals from the accelerometers. Three different oscillations were recorded, one elemental transverse oscillation of the string, the bending oscillation of the limbs and the third was transverse oscillation laterally with the string and arrow together. All three had a period that was much longer than the shooting. It was then considered important to be able to measure to describe the movement of the handle during the shooting process, which is specific to each combination archer and bow. Experiments on this were done with available equipment that was not sufficient due to too slow serial communication. After creating a theoretical model of the frame, ”cushioning pads” could be shown to have a positive but rather small effect.<br /><br />https://www.chalmers.se/en/departments/physics/calendar/Pages/Thesis-defense-Huaiqian-Yi-220128.aspxhttps://www.chalmers.se/en/departments/physics/calendar/Pages/Thesis-defense-Huaiqian-Yi-220128.aspxHuaiqian Yi, Physics<p>Online via Zoom</p><p>​Title of doctoral thesis: Investigation of a discrete ordinates method for neutron noise simulations in the frequency domain Follow the presentation online ​</p><strong>​Abstract:</strong> During normal operations of a nuclear reactor, neutron flux measurements show small fluctuations around mean values, the so-called neutron noise. These fluctuations may be driven by a variety of perturbations, e.g., mechanical vibrations of core components. From the analysis of the neutron noise, anomalous patterns can be identified at an early stage and corrected before they escalate. For this purpose, the modelling of the reactor transfer function, which describes the core response to a possible perturbation and is based on the neutron transport equation, is often required. In this thesis a discrete ordinate method is investigated to solve the neutron noise transport equation in the frequency domain. When applying the method, two main issues need to be considered carefully, i.e., the performance of the numerical algorithm and possible numerical artifacts arising from the discretization of the equation. For an efficient numerical scheme, acceleration techniques are tested, namely, the synthetic diffusion acceleration and various forms of the coarse mesh finite difference method. To reduce the possible numerical artifacts, the impact of the order of discrete ordinates and the use of a fictitious source method are studied. These analyses serve to develop the higher-order neutron noise solver NOISE-SN. The solver is compared with different solvers and used to simulate neutron noise experiments carried out in the research reactor CROCUS (at EPFL). The solver NOISE-SN is shown to provide results that are consistent with the results obtained from other higher-order codes and can reproduce features observed in neutron noise experiments.https://www.chalmers.se/en/departments/mc2/calendar/Pages/Connor-Skehan,-MC2.aspxhttps://www.chalmers.se/en/departments/mc2/calendar/Pages/Connor-Skehan,-MC2.aspxConnor Skehan, Microtechnology and Nanoscience - MC2<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>​Title: Low noise frequency combs and their use in broadly tunable lasers and optical coherence tomography</p>​<span style="background-color:initial">Connor Skehan is a PhD student at the Photonics Laboratory, MC2</span><div>Discussion leader will be Per Olof Hedekvist</div> <div>Examiner: Prof. Magnus Karlsson</div> <div>Main supervisor: Prof. Peter Andrekson</div> <div>The licentiate seminar will be held at Kollektorn and online: <a href="https://chalmers.zoom.us/j/69168595018">https://chalmers.zoom.us/j/69168595018​</a></div> <span style="background-color:initial">To be admitted, please enter the number: </span>667781​https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_7_feb.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_7_feb.aspxSmallTalks [about Nanoscience] DNP-NMR<p>Kollektorn and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. Hampus Karlsson, PhD; Dep. of Chemistry and Chemical Engineering will talk about DNP-NMR. ​The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593</p>​<img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:275px" /><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span><div><span style="background-color:initial">Click to get a larger picture.</span></div> <span style="background-color:initial"> </span>​https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_21_feb.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_21_feb.aspxSmallTalks [about Nanoscience] Graphene heat capacity measurements<p>Kollektorn, and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. Aamir Ali, postdoc at Quantum Techology Laboratory, Department of Microtechnology and Nanoscience will talk about Graphene heat capacity measurements.  The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593​</p>​<img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:275px" /><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span><div><span style="background-color:initial">Click to get a larger picture.</span></div> <div> </div> https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_awardees21.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_awardees21.aspx2D-TECH seminar: 2D-TECH PhD Award<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH seminar where we present the PhD Awardees.</p>https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_7_march.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_7_march.aspxSmallTalks [about Nanoscience] Proteins and polymers<p>Kollektorn, and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. Justas Svirelis PhD student; Dep. of Chemistry and Chemical Engineering, Applied Chemistry; Andreas Dahlin Group will talk about proteins and polymers.​ The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593​</p><img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:275px" /><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span><div><span style="background-color:initial">Click to get a larger picture.</span></div> https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_14march.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_14march.aspx2D-TECH seminar<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH seminar.  Speaker and title will be announced soon.</p>https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_21_march.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_21_march.aspxSmallTalks [about Nanoscience]<p>TBA</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. The speaker and title will be updated soon.​ The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593​</p>​<span style="background-color:initial">​</span><div><img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="float:none;margin:5px;height:275px;width:200px" /><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span></div> <div><span style="background-color:initial">Click to get a larger picture.</span></div> <div> </div>https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_28march.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_28march.aspx2D-TECH webinar with Daniel Neumaier<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH webinar with Prof. Dr. Daniel Neumaier​, Bergische Universität Wuppertal. ​</p>​​​P<span style="background-color:initial">lease join from PC, Mac, Linux, iOS or Android: <a href="https://chalmers.zoom.us/j/68261745009">https://chalmers.zoom.us/j/68261745009​<br /></a></span><span style="background-color:initial">Password: 923613​​​</span><div><br /></div> <div><span style="background-color:initial"></span>The title of the talk will be announced here soon. </div>https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_4_april.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_4_april.aspxSmallTalks [about Nanoscience]<p>Kollektorn, and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. The speaker and title will be updated soon.​ The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593​</p><div><span style="background-color:initial"><img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:275px" />In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span></div> <div><span style="background-color:initial">Click to get a larger picture.</span></div> <div> ​</div> https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_11april.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_11april.aspx2D-TECH seminar with Dmitri K. Efetov<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH seminar with Prof. Dr. Dmitri K. Efetov, Ludwig-Maximilians-Universität, München. ​</p><span style="background-color:initial">Please join from PC, Mac, Linux, iOS or Android: <a href="https://chalmers.zoom.us/j/68261745009">https://chalmers.zoom.us/j/68261745009​<br /></a></span><span style="background-color:initial">Password: 923613​​</span><div><span style="background-color:initial"></span>​<div>The title will be announced soon. </div></div>https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_25april.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_25april.aspx2D-TECH seminar<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH seminar.  Speaker and title will be announced soon.</p>https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_2_may.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_2_may.aspxSmallTalks [about Nanoscience]<p>Kollektorn MC2, and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. The speaker and title will be updated soon.​ The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593​</p><img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:275px" /><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span><div><span style="background-color:initial">Click to get a larger picture.</span></div> https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_9May.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_9May.aspx2D-TECH seminar<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH seminar.  Speaker and title will be announced soon.</p>https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_16_may.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_16_may.aspxSmallTalks [about Nanoscience]<p>Kollektorn MC2, and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. The speaker and title will be updated soon.​ The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593 ​</p>​<span style="background-color:initial">​<img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:276px" /></span><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span><div><span style="background-color:initial">Click to get a larger picture.</span></div> <div> </div> https://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_23May.aspxhttps://www.chalmers.se/en/centres/2d-tech/calendar/Pages/2d-tech_23May.aspx2D-TECH seminar<p>Kollektorn, lecture room, Kemivägen 9, MC2-huset</p><p>Welcome to a 2D-TECH seminar.  Speaker and title will be announced soon.</p>https://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_30_may.aspxhttps://www.chalmers.se/en/research/strong/nano/calendar/Pages/ei_nano_seminar_30_may.aspxSmallTalks [about Nanoscience]<p>Kollektorn MC2, and on Zoom</p><p>​​​Welcome to a seminar in the series SmallTalks [about Nanoscience] arranged by the Excellence Initiative Nano​. The speaker and title will be updated soon.​ The seminar will be held both live and on Zoom  Join from PC, Mac, Linux, iOS or Android: https://chalmers.zoom.us/j/63018620593 ​</p>​<span style="background-color:initial">​<img src="/SiteCollectionImages/Areas%20of%20Advance/Nano/SmallTalk%20about%20Nanoscience/Decisiontree_EI_NanoSeminar2021_SC%203.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:275px" /></span><span style="background-color:initial">In c</span><span style="background-color:initial">ase you are not sure yet, whether you want to attend or not, we have prepared a decision tree that might help you! </span><div><span style="background-color:initial">Click to get a larger picture.</span></div> <span style="background-color:initial"> </span>