Fast and Noninvasive Temperature Measurement byUsing Magnetic Nanoparticles
Prof. Wenzhong Liu
It is of significantinterest to develop a noninvasive, accurate and biocompatible temperaturemeasurement methods for the study of bio-medical application. It belongs to oneof the most challenge in the field of bio-thermo-physical. Magneticnanothermometry (MNTM) and magnetic heat using magnetic nanoparticles (MNPs)has a unique property that allows non-invasive temperature probing and in vivothermal manipulation.
In the past five years, ourgroup reported different approaches for remote temperature measurement by usingthe MNPs. The majority of the reported methods used the first-order Langevinfunction to describe static magnetic properties of MNPs. The MNTM usingLangevin function and finite terms of Taylor expansion of Langevin function tomodel the magnetization and the inverse susceptibility of MNPs in dc magneticfield was proposed to measure temperature by our group.
The experiments performed inMPMS SQUID VSM (QUANTUM Design, USA) were time-consuming with an accuracy of0.57 K in the temperature range from 310 to 350 K. Under the calibration ofBloch’s Law, maximum temperature estimation error of 0.022 K with a standarddeviation of 0.017 K was achieved using the experiment data obtained inSQUID. In weak sinusoidal magnetic field, a real-time MNTM with maximum temperatureestimation error of 0.67 K and standard deviation of 0.29 K in 1 s measurementwas achieved, whereas the experiments shown the maximum temperature estimationerror was 0.48 K with a standard deviation of 0.19 K in sinusoidal ac plusdc magnetic fields.
In order to improve theresolution and responding time of temperature measurement, triangle wavemagnetic field was used to in real-time MNTM. We employ time-varying MNP-basedsample, induced by low frequency (f = 25 Hz) triangular-wave magnetic field, toachieve the approach of real-time recording of magnetization curve. We foundthat by employing the magnetization curve of a magnetic fluid sample containingmagnetite nanoparticles of about 30 nm in diameter the accuracy of thetemperature probing is about 0.32 K (0.1% relative accuracy), with responsetime of 1 s.
A model based on Brownianrelaxation time was constructed to temperature measurement by using the ACsusceptibility of magnetic nanoparticles (30 nm average diameter). The newapproach for remote MNTM was achieved with measured AC susceptibility by thedesigned system and the proposed model. Our experimental results show that ourMNTM allows temperature errors lower than 0.3 K with standard deviations lowerthan 0.1 K in the temperature range from 310 to 320 K.
Whereas in the applicationof laser heating, our experiments showed that the MNP DC magnetizationtemperature-measurement system can detect a 14.4 ns laser pulse at least.
Author’s Short Biography
WenzhongLiu joinedthe Huazhong University of Science and Technology (HUST) in 2000, and became afull professor in 2011. Currently he is Chair of the Department of MeasurementScience and Instruments, HUST.
Dr. Liu earned his B.S.,M.S. degrees and Ph. D. from HUST’s Department of Control Science andEngineering in 1997, 2000 and 2004 respectively. At HUST he teaches Sensor andTransducer, and Digital Signal Processing. He specializes in weak signaldetecting, focusing on issues related to characterization of magneticnanoparticles (MNP), temperature pulse detection and temperature imaging usingMNP. His current research interests include non-invasive temperature estimationusing MNP, and characterization of MNP.
Dr. Prof. Liu has published articles in numerous scholarly outlets, includingThe Scientific Reports， Nanotechnology, IEEE Transaction onNanotechnology, Nano Scale Research, Review of Scientific Instruments, Sensors& Actuators: A and Measurement Science & Technology. He also holds 15Chinese patents, 2 US patents and 1 Japanese patent.
Industrial Use of Smart Sensors and Sensing Systems in Internet
Environment for Contaminant Detection of Drinking Water,
A Case Study of Remote Surveillance
Prof. Joyanta Kumar Roy
More than three millionpeople in the world die of water-related diseases due to contaminated water,which includes 1.2 million children. In India, it is reported that groundwaterin one-third of India’s 600 districts is not fit for drinking as theconcentration of fluoride, iron, salinity and arsenic exceeds the tolerancelevels. The treated surface water is better than the ground water but stringentsurveillance of quality monitoring and control are very essential under singleumbrella. Water management system deserves single point Water Quality Monitoring& Surveillance (WQM&S) from source to the entire distribution network.It is a grand challenge to monitor large number of remote access points whichmay under water contamination threat and are very difficult to protect. Thedeployment of Smart online water quality sensors, programmable logic controllerbased wireless remote terminal unit (RTU) at various points along withSupervisory Control and data acquisition (SCADA) system provides single pointcontinuous surveillance to potable water from source to the distributionend.It monitors plant and processparameters, logs all data in real time, analysis the data with historicaltrends. It integrates online data from sensor along with laboratory data andpublishes the same for water generation and supply management. ICTinfrastructure provides real time pictures of treatment plant and on line waterquality parameters through internet and which is accessible globally throughsecure channel. A typical application in water treatment plant is discussed. Thistalk covers key aspects of real time monitoring of water quality using smartsensors and linked water testing laboratory data under cloud based ICT and IoTenvironment. This talk also focuses on the challenges, current technology,experiences gained during implementation.
Author’s Short Biography
Joyanta Kumar Roy graduated from theDepartment of Physics from University of Calcutta, India and received Master ofScience degree in Physics in 1977. He started his carrier as entrepreneur inthe year 1984 founded a small manufacturing enterprise named System AdvanceTechnologies Pvt. Ltd., dealing turnkey execution of SCADA, Automation andindustrial instrumentation system. Now he is associated with his company asfounder chairman and technical advisor.In 2004 he obtained PhD (Technology) degree in Applied Physics fromUniversity of Calcutta, India and executed number of projects, related tocontrol, automation and instrumentation in several engineering sectors. Afterlong association with industry he started his academic carrier from 2005. Heworked with many Educational Institutes as Principal and Dean. He wasassociated with MCKV Institute of Engineering as Dean (Research andConsultancy). He executed several projects on Instrumentation, SCADA and remotemonitoring on IoT environment and developed number of indigenous sensors andsensing technology for industrial process.
He is technical speaker andactive researcher in inter-disciplinary field of Science and Technology. Hereceived several awards and published book and book chapters on low costsensors and sensing system. He published many research articles ininternational & national journals and organized many conferences innational and international level. He is senior member IEEE, Chairman and EC memberIET (UK) Kolkata Network, Fellow of IWWWA and Fellow of IETE. Presently he isworking as Editor of S2IS and regular reviewer of research articles. Hispresent research interest includes development of smart measurement and controlsystem for water production and distribution, multifunction sensor, ICT based mhealth, Technology Assisted Living, smart home and city.
Unobtrusive SmartSensing and Pervasive Computing for Healthcare: Cardio-respiratory and PhysicalRehabilitation Assessment
Prof. Octavian Adrian Postolache
The ageing phenomenarequires the development in the near future of new systems and services thatwill provide healthcare quality with costs optimization. In this context thedistinguished lecture will present a set of unobtrusive sensing solutions forhealth status and daily activity monitoring for regular elderly people and userunder physical rehabilitation process. Will be highlighted vital signalsacquisition and processing by sensing modules embedded in clothes and/or accessoriesand walking aid equipment. The strength and drawbacks of different solutionsfor cardiac and respiratory assessment will be discussed special attention willbe granted to the ballistocardiography and radar ballistocardiographyimplementations but also to other cardiac assessment sensing solutions.
Motor activity monitoringfor normal users but also for users under physical rehabilitation represent animportant field of research. Novel solutions for motions assessment based onmicrowave radar motion sensor, MEMS inertial sensors associated with walkingaids used in gait rehabilitation process for objective evaluation of appliedrehabilitation plan success will be presented together appropriate signalprocessing techniques. Elements of the electronic health record as so as theinteraction between user and the mixed reality scenarios developed for physicaltherapy are also included in the talk. Additional as part of remote physicalrehabilitation unobtrusive sensing solution integration with virtual realityserious games will be considered for the presentation as so as several elementsconcerning the usage of thermography to evaluate the physical rehabilitationsessions effectiveness.
Author’s Short Biography
Octavian Adrian Postolachegraduated in Electrical Engineering at the Gh. Asachi Technical University ofIasi, Romania, in 1992 and he received the PhD degree in 1999 from the sameuniversity, and university habilitation in 2016 from Instituto SuperiorTecnico, Universidade de Lisboa, Portugal. In the period 1992-2000 he worked asassistant and assistant professor at Technical University of Iasi. In 2000 hebecame principal researcher of Instituto de Telecomunicações where he is nowSenior Researcher. He served as invited professor at EST/IPS Setubal, Portugalbetween 2001 and 2012 when he joined Instituto Universitario de Lisboa/ISCTE-IUL Lisbon where he is currently Aux. Professor. His fields of interestsare smart sensors for biomedical and environmental applications, pervasivesensing and computing, wireless sensor networks, signal processing withapplication in biomedical and telecommunications, non-destructive testing anddiagnosis based on eddy currents smart sensors, computational intelligence withapplication in automated measurement systems. He was principal researcher ofdifferent projects including EHR-Physio regarding the implementation ofElectronic Health Records for Physiotherapy and he is currently principalresearcher of TailorPhy project Smart Sensors and Tailored Environments forPhysiotheraphy.He served as technical principal researcher in projects suchCrack Project related non-destructive testing of conductive materials. He isvice-director of Instituto de Telecomunicações/ISCTE-IUL delegation, directorof PhD program Science and Communication Technologies at ISCTE-IUL, and he wasleader of several collaboration projects between the Instituto deTelecomunicaçoes and the industry such as Home TeleCare project with PortugueseTelecommunication Agency for Innovation (PT Inovação), Integrated SpectrumMonitoring project with National Communication Agency (ANACOM). He is activemember of national and international research teams involved in Portuguese andEU and International projects. Dr. Postolache is author and co-author of 9patents, 4 books, 16 book chapters, 67 papers in international journals withpeer review, more than 220 papers in proceedings of international conferences.He is IEEE Senior Member I&M Society, Distinguished Lecturer of IEEE IMS,chair of IEEE I&MSTC-13 Wireless and Telecommunications in Measurements,member of IEEE I&M TC-17, IEEE I&M TC-18, IEEE I&MS TC-25, IEEEEMBS Portugal Chapter and chair of IEEE IMS Portugal Chapter. He is AssociateEditor of IEEE Sensors Journal, and IEEE Transaction on Instrumentation andMeasurements, he was general chair of IEEE MeMeA 2014, and TPC chair of ICST2014, Liverpool and ICST 2015 in Auckland. He received IEEE best reviewer andthe best associate editor in 2011 and 2013 and other awards related to hisresearch activity in the field of smart sensing.