BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20230312T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20231105T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20230423T155152Z UID:A3F69295-8553-467B-94E9-CF45BA532E89 DTSTART;TZID=America/New_York:20230420T133000 DTEND;TZID=America/New_York:20230423T143000 DESCRIPTION:Thermoacoutsic effect describes the generation of acoustic wave s from incident electromagnetic energy due to differential heat generation and absorption in an object. Thermoacoustic imaging (TAI) is a promising candidate for many biomedical applications including breast cancer detecti on. TAI creates an image of the internal morphological features of a diele ctrically lossy sample by employing generated acoustic waves from absorbed microwave energy in the sample owing to the thermoacoustic effect based o n thermoelastic expansion. Malignant tissues\, usually embracing higher di electric loss\, absorbing more energy and emanating stronger acoustic wave s than the surrounding healthy tissues\, may be distinguished in the image . The elegant marriage between microwave and ultrasound\, whose advantages and drawbacks in biomedical imaging are in many ways complementary\, endo ws TAI with the unique merit of high contrast inherited from microwave and excellent spatial resolution inherited from ultrasound. TAI is also non-i onizing and noninvasive compared with other existing breast cancer imaging modalities. A potential clinical feasible TAI system is more cost-efficie nt and compact than mammography and MRI.\n\nIn addition\, we explore anoth er novel potential application based on thermoacoustic effect for wireless communications\, which is referred to as thermoacoustic communications (T AC). It is proposed as a potential complementary method to mitigate the ch allenge in conventional wireless communication from air to water\, in whic h the electromagnetic wave cannot penetrate deep in water. TAC employs a m icrowave antenna in air to irradiate the water surface with a microwave si gnal encoded with information to be communicated. Some microwave energy is absorbed by the water and concomitant temperature increase and thermal ex pansion take place in the water. Acoustic waves are subsequently emanated from the water and propagate in the water with much less attenuation than electromagnetic waves and thus can propagate a long distance in the water. \n\nFinally\, an underwater device with an acoustic transducer can detect the generated acoustic signals and the information is acquired by decoding the signals. In this talk\, I will present our theoretical and experiment al studies on thermoacoustic effect and its applications\n\nSpeaker(s): Pr of Hao Xin\, \n\nRoom: 401\, Bldg: ITE\, UConn\, Storrs\, Connecticut\, Un ited States LOCATION:Room: 401\, Bldg: ITE\, UConn\, Storrs\, Connecticut\, United Stat es ORGANIZER:cblair@ieee.org SEQUENCE:0 SUMMARY:Thermoacoustic Effects and Applications in Medicine\, Security and Communication URL;VALUE=URI:https://events.vtools.ieee.org/m/358972 X-ALT-DESC:Description: <br /><p>Thermoacoutsic effect describes the genera tion of acoustic waves from incident electromagnetic energy due to differe ntial heat generation and absorption in an object. Thermoacoustic imaging (TAI) is a promising candidate for many biomedical applications including breast cancer detection. TAI creates an image of the internal morphologica l features of a dielectrically lossy sample by employing generated acousti c waves from absorbed microwave energy in the sample owing to the&nbsp\; t hermoacoustic effect based on thermoelastic expansion. Malignant tissues\, usually embracing higher dielectric loss\, absorbing more energy and eman ating stronger acoustic waves than the surrounding healthy tissues\, may b e distinguished in the image. The elegant marriage between microwave and u ltrasound\, whose advantages and drawbacks in biomedical imaging are in ma ny ways complementary\, endows TAI with the unique merit of high contrast inherited from microwave and excellent spatial resolution inherited from u ltrasound. TAI is also non-ionizing and noninvasive compared with other ex isting breast cancer imaging modalities. A potential clinical feasible TAI system is more cost-efficient and compact than mammography and MRI.</p>\n <p>In addition\, we explore another novel potential application based on t hermoacoustic effect for wireless communications\, which is referred to as thermoacoustic communications (TAC). It is proposed as a potential comple mentary method to mitigate the challenge in conventional wireless communic ation from air to water\, in which the electromagnetic wave cannot penetra te deep in water. TAC employs a microwave antenna in air to irradiate the water surface with a microwave signal encoded with information to be commu nicated. Some microwave energy is absorbed by the water and concomitant te mperature increase and thermal expansion take place in the water. Acoustic waves are subsequently emanated from the water and propagate in the water with much less attenuation than electromagnetic waves and thus can propag ate a long distance in the water.</p>\n<p>Finally\, an underwater device w ith an acoustic transducer can detect the generated acoustic signals and t he information is acquired by decoding the signals. In this talk\, I will present our theoretical and experimental studies on thermoacoustic effect and its applications</p> END:VEVENT END:VCALENDAR