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SUMMARY:Sensing Material Properties using Radio Frequency
DTSTART:20240227T130000
DTEND:20240227T150000
DTSTAMP:20260409T123619Z
UID:1f315ddff6af30ccffab730ec6f4a09160ad55365d08fed8474d7c42
CATEGORIES:Conferences - Seminars
DESCRIPTION:Hailan Zhang Shanbhag\nEDIC candidacy exam\nExam president: Pr
 of. Andreas Burg\nThesis advisor: Prof. Haitham Al Hassanieh\nCo-examiner:
  Prof. Yanina Shkel\n\nAbstract\nSensing the world around us has become in
 creasingly important in the age of automation and smart devices. Non-invas
 ive contactless material sensing is a key primitive that can enhance a ple
 thora of applications like robotic grasping and mapping\, liquid and food 
 quality monitoring\, soil and plant sensing\, quality control in warehouse
 s\, simpler security scanning as well as structural health monitoring of b
 uildings\, bridges\, planes\, trains\, etc. Unfortunately\, today material
  sensing requires bulky and specialized equipment like optical spectroscop
 y\, X-Ray\, and ultrasonography which typically cost tens of thousands of 
 dollars. Past work in material sensing using radio frequency studied extre
 mely limited scenarios using specialized equipment such as using ground pe
 netrating radars (GPR) for measuring permittivity of materials under the s
 oil\, and thus is not translational for a more ubiquitous solution for mat
 erial sensing.\n\nAs a result\, there has been significant interest\, in t
 he wireless and mobile research community\, to work towards enabling a sca
 lable and practical solution. In particular\, we will study recent work th
 at leverages wireless signals from IoT radios to capture material properti
 es which can enable a cheap\, non-invasive\, and ubiquitous alternative th
 at can be used for everyday applications. Some of the techniques discussed
  require physically touching the material or attaching an RFID tag to the 
 object a priori\, which is sometimes not feasible if the object being sens
 ed is unreachable or does not have a rigid surface. Other techniques we wi
 ll discuss analyze the wireless signal properties after it has penetrated 
 through the material to extract the material's permittivity. However\, suc
 h techniques have only been demonstrated for liquids\, require careful pla
 cement of the liquid container between two radios\, and depend on the cont
 ainer the liquid is in. Finally another realm of wireless research looks a
 t the reflection profiles from fruit to determine ripeness properties\, ho
 wever this requires THz frequencies which can be expensive. Thus\, we ask 
 the question: How can we push the performance of wireless sensing towards 
 a contactless\, cheap\, and more generalizable solution?\n\nBackground pap
 ers\nFood and Liquid Sensing in Practical Environments using RFIDs (https:
 //www.usenix.org/system/files/nsdi20-paper-ha.pdf)\nLiquID: A Wireless Liq
 uid Identifier (https://dl.acm.org/doi/pdf/10.1145/3210240.3210345)\nPermi
 ttivity Measurements of Multilayered Media with Monostatic Pulse Radar (ht
 tps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=563284)\n 
LOCATION:BC 329 https://plan.epfl.ch/?room==BC%20329
STATUS:CONFIRMED
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