{ "121463-21846575": { "datetime_modified":"20240905T175211", "datetime_start":"20240920T150000", "datetime_end":"20240920T160000", "has_end_time":1, "date_start":"2024-09-20", "date_end":"2024-09-20", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"AIM Seminar: Harnessing Structural Periodicity for Wave Control Toward Sensing, Harvesting, and Space Applications", "occurrence_title":"", "combined_title":"AIM Seminar: Harnessing Structural Periodicity for Wave Control Toward Sensing, Harvesting, and Space Applications: Serife Tol, Mechanical Engineering, University of Michigan", "event_subtitle":"Serife Tol, Mechanical Engineering, University of Michigan", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"The study of structural periodicity in engineered materials, such as metamaterials, phononic crystals, and metasurfaces, has opened new frontiers in wave control. Our research group explores the fundamental principles and advanced techniques for harnessing structural periodicity to manipulate wave propagation for diverse applications in sensing, energy harvesting, and space technology. By leveraging the unique properties of these periodic structures, we demonstrate how they can be used to enhance ultrasonic sensing and nondestructive testing, improve the efficiency of energy harvesters, and develop innovative solutions for space applications. The first part of my talk will focus on gradient index phononic crystal (GRIN-PC) lenses conforming pipe-like structures. Conformal GRIN-PC lenses are designed by tailoring unit cell geometry according to a specific refractive index profile. We explore the focusing of multi-mode guided waves at the desired locations (i.e. sensor nodes) along the pipe structure to address the attenuation problem in long-range pipelines. Then, I will explain how we exploit the negative refraction property of phononic crystals for designing a super lens. Unlike GRIN-PC lenses, which have at least minimum wavelength resolution as their natural limit, negative refraction-based PC lenses can potentially overcome the diffraction limit, which is highly favorable in medical imaging or other applications requiring localized wave intensity in areas smaller than a square wavelength. The second part of my talk will deal with reconfigurable metasurfaces for full wavefront control with an emphasis on energy harvesting of low frequency elastic waves. We fully analyze and design the elastic metasurfaces by tailoring the phase gradient of individual unit structures for different wave functions and present theoretical findings along with experimental validation. The last part of my talk will highlight the potential of metamaterials in space applications, such as novel in-space manufacturable extended solar arrays and antennas with high precision and mass efficiency.\r\n\r\nContact: Silas Alben", "occurrence_notes":null, "guid":"121463-21846575@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/121463", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"1084", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Applied Interdisciplinary Mathematics (AIM) Seminar - Department of Mathematics", "group_id":"4882", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21846575 } , "126157-21856608": { "datetime_modified":"20241005T123314", "datetime_start":"20240920T150000", "datetime_end":"20240920T160000", "has_end_time":1, "date_start":"2024-09-20", "date_end":"2024-09-20", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Dream Big with Your Degree: Virtual University Information Session", "occurrence_title":"", "combined_title":"Dream Big with Your Degree: Virtual University Information Session", "event_subtitle":"", "event_type":"Careers \/ Jobs", "event_type_id":"2", "description":"BE THE FUTURE. GROW WITH US.At Booz Allen, we believe that great ideas can come from anyone\u2014which is why we give everyone aseat at the table. If you\u2019re looking to start your career and use your passion and skills to help change the world, we want to connect with you. Join us for our virtual Dream Big with Your Degree: University Information Session with our University Recruiting team on Friday, September 20th from 3:00 pm \u2013 4:00 pm ET. Register Here to receive the link to join!:https:\/\/careers.boozallen.com\/events\/JobDetail?jobId=102080 Link to Join:https:\/\/bah.rev.vbrick.com\/#\/events\/d7d8edfe-a505-4ed0-87c0-cbf42ed14180  At Booz Allen, you\u2019ll join a culture of innovation, rooted in a collective desire to make a\u202flasting impact that you\u2019ll realize.\u202fThe\u202fskills you\u2019ll bring to our\u202fteam,\u202fcoupled\u202fwith\u202fthe\u202funparalleled\u202fmissions you\u2019ll serve, will shift the way the world works.Interested in applying to Booz Allen? Check out our University opportunities here:https:\/\/careers.boozallen.com\/talent\/university\/University Join us. The world can't wait.", "occurrence_notes":null, "guid":"126157-21856608@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/126157", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"", "has_livestream":0, "cost":"", "tags":[], "website":"", "sponsors":[ { "group_name":"University Career Center UCC", "group_id":"1140", "website":"http:\/\/careercenter.umich.edu" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21856608 } , "125383-21854889": { "datetime_modified":"20240909T120501", "datetime_start":"20240920T150000", "datetime_end":"20240920T160000", "has_end_time":1, "date_start":"2024-09-20", "date_end":"2024-09-20", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Forks and their uses (combinatorics seminar)", "occurrence_title":"", "combined_title":"Forks and their uses (combinatorics seminar): Tucker Ervin, University of Alabama", "event_subtitle":"Tucker Ervin, University of Alabama", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Mutation-finite quivers --- those mutation-equivalent to only a finite number of quivers --- are relatively well-understood objects. However, their counterpart, mutation-infinite quivers, are not. Using a special type of quiver called a fork, we give two results related to mutation-infinite quivers. First, we prove that a quiver being mutation-equivalent to a finite number of non-forks is a hereditary property, i.e., one preserved by restriction to any full subquiver. Second, using only forks and elementary methods, we show that 3-vertex quivers that are not mutation-equivalent to an acyclic quiver have sign-coherent c-vectors.", "occurrence_notes":null, "guid":"125383-21854889@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/125383", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"4096", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Combinatorics Seminar - Department of Mathematics", "group_id":"4885", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2024\/09\/event_125383_original-1.jpeg" }, "occurrence_count":1, "first_occurrence":21854889 } }