{"id":1488,"date":"2025-06-15T23:02:21","date_gmt":"2025-06-15T16:02:21","guid":{"rendered":"https:\/\/mee.vgu.edu.vn\/home\/?page_id=1488"},"modified":"2026-09-10T16:22:10","modified_gmt":"2026-09-10T09:22:10","slug":"highlights-publications","status":"publish","type":"page","link":"https:\/\/mee.vgu.edu.vn\/home\/mee\/highlights-publications\/","title":{"rendered":"Highlights: Publications"},"content":{"rendered":"\n<div class=\"page-wrapper-global\">\n\n\n\n<style>\n.pub-intro-container {\n    max-width: 800px;\n    margin: 20px auto 18px auto;\n    padding: 22px 22px;\n    background-color: #121212;\n    background: \n        linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),\n        \/*linear-gradient(rgba(255,255,255,0.65), rgba(255,255,255,0.65)),*\/\n        url('https:\/\/mee.vgu.edu.vn\/home\/wp-content\/uploads\/2026\/01\/bg_img-01-resized.jpg');\n    background-size: cover;\n    background-position: center;\n    background-repeat: no-repeat;\n    will-change: transform, opacity;\n    box-shadow: 0px 8px 18px rgba(0,0,0,0.18);\n}\n.pub-intro-container p {\n    margin: 0 0 10px 0;\n    font-size: 16px;\n    line-height: 1.7;\n    text-align: left;\n    color: white;\n    font-weight: 600;\n}\n.pub-intro-container strong { color: #f2c48d; }\n@media (max-width: 600px) {\n    .pub-intro-container { padding: 18px 16px; background-position: 70% center; }\n    .pub-intro-container p { font-size: 15px; }\n}\n<\/style>\n<div class=\"pub-intro-container cinematic\">\n<p>Explore <a style=\"color:red !important; text-decoration: none !important;\">research publications<\/a> authored by our faculty, students, and industry collaborators, showcasing the academic contributions of the MEE program at VGU. These works reflect our commitment to advancing knowledge in Radio Frequency \/ Microwave \/ Millimeter-waves, Antennas Systems, Communications, and Microelectronics.\n<br><br>\nThis collection is expanding for each academic intake, highlighting innovative research, pratical engineering solutions, and interdisciplinary collaborattions that contribute to both academic progress and real-world technological applications.<\/p>\n<\/div>\n\n\n\n<style>\n  .responsive-line {\n    width: 100%;\n    display: flex;\n    text-align: center;\n    margin: 1em 0;\n  }\n  .responsive-line-inner {\n    display: block;\n    width: 100%;\n    max-width: 800px;\n    margin: 0 auto;\n    border-top: 3px solid #000000;\n  }\n  body.dark-mode .responsive-line-inner {\n    border-top: 3px solid #ffffff;\n  }\n<\/style><div class=\"responsive-line cinematic\"><div class=\"responsive-line-inner\"><\/div><\/div>\n\n\n\n<div class=\"scrollbar-top\"><div class=\"scrollbar-top-inner\"><\/div><\/div>\n<p class=\"mobile-swipe-hint\">Tap open to read the abstracts<br>Swipe to read more \u2192<\/p>\n<div class=\"publication-container\">\n  <table id=\"publicationTable\">\n    <thead>\n      <tr>\n        <th onclick=\"sortTable()\">Title \u2b0d<\/th>\n        <th>Authors<\/th>\n        <th>Details<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody> \n<!-- start copying the entry from here -->\n<tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Contact-Based Glucose Measurements Without Any Vector Network Analyzer,<\/strong><\/td>\n        <td>Liu, Louis W. Y., Thien Vinh Bui, Ninh Tran Hai Truong, Choon Kit Chan, and Ngoc Hong Nguyen,<\/td>\n        <td> Electronics 15, no. 17: 3922. https:\/\/doi.org\/10.3390\/electronics15173922<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n Most experimental RF\/microwave glucose sensors have to operate in conjunction with a vector network analyzer (VNA). Not only is a VNA bulky and expensive, but the process of a VNA-based glucose measurement is extremely tedious. For the first time, a fully customized system has been developed to demonstrate the feasibility of contact-based glucose measurement without any VNA. Method: A sweeping RF synthesizer (LMX2595) was used for scanning a specific range of frequencies that covered the perturbed frequencies of a membrane-supported glucose sensing head (MSSH), which was around 1.3 GHz. During the frequency sweeping process, a gain\u2013phase detector (AD8302) was used to capture the gain, which was one of the parameters for determining the MSSH\u2019s reflection coefficients (S11). During the frequency sweeping process, the measured voltage gains and phases from the AD8302 module were serially sent to a computer, where the reflection coefficients were retrieved and smoothed with a Savitzky\u2013Golay filter augmented with a multilevel neural network implemented in PyTorch 2.13.0. Results: The proposed system was able to conduct continuous measurements on glucose concentrations from 0 to 111 mg\/dL with no VNA and no manual intervention. Moreover, it was able to generate highly reproducible results consistent with those of a commercial VNA. Conclusion: The proposed non-VNA glucose sensing system was able to continuously measure the concentrations of a glucose\u2013water solution with results consistent with those of a VNA.\n<\/p>\n            <br>\n            <p><a href=\"https:\/\/www.mdpi.com\/2079-9292\/15\/17\/3922\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n<!-- Copy the template down to here -->\n\n <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Wireless Power Transfer by Spoof Surface Plasmon Polaritons at Ultrasonic Frequencies,<\/strong><\/td>\n        <td>Louis W. Y. Liu, Abhishek Kandwal, Timo Oster, Klaus Hofmann, and Choon Kit Chan,<\/td>\n        <td> Progress In Electromagnetics Research M, Vol. 137, 79-86, 2026, doi:10.2528\/PIERM25121707<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n Long-range wireless power transfer (WPT) is difficult with unguided radio waves or magnetic coupling. In this work,\na plasma-assisted quasi-parallel planar waveguiding medium is proposed for overcoming the transmission range issues. Method: A\ndielectric layer sitting on a conductive object or grid was used as a medium for WPT. At the transmitting end, a plasma ball shielded with\na spark-gap activated hemispheric metal cap was used to ionize the air in the space, thereby forming the top cladding layer of the quasi\nparallel-plate waveguide. At the receiving end, the transmitted power was coupled out of the waveguide over the entire ultrasonic spectrum\nusing Avramenko diode configurations. A Kretschmann-like configuration was used at both ends for conversion between a plasmonic\ncurrent and the surface waves. Results: In the proposed experimental setups, the transmitted power was successfully harvested over a\nfrequency range from near DC to 230 MHz, with the ratio of the received power to the transmitted power significantly surpassing the\nvalue predicted by the Friis\u2019 two-ray ground reflection model. Conclusion: WPT based on surface waves is technically feasible with the\nhelp of Kretschmann-like configurations.\n<\/p>\n            <br>\n            <p><a href=\"https:\/\/www.jpier.org\/ac_api\/download.php?id=25121707\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n<!-- start copying the entry from here -->\n<tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Compact Image Rejection Mixer for A Portable Non-VNA Based Glucose Sensor,<\/strong><\/td>\n        <td>Le Ha Bao Hoang, Louis Wai Yip Liu, Kiet Huynh Du, Truong Tran Hai Ninh, Ngoc Nguyen Hong, Jan Hesselbarth,<\/td>\n        <td> The International Conference of Multidisciplinary Research (ICMR 2025), 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n For the first time, a portable glucose sensor has been built for in-vitro glucose measurements without a vector network analyzer. The proposed glucose sensor is currently being extended to work at 9 GHz, whilst the key component of this system (i.e. the gain phase detector) can cope with a maximum of 2.7GHz.   In this study, we addressed the hardware limitation issue of the gain phase detector by developing a highly compact image rejection mixer to down-convert the 9 GHz sensing signal to 500MHz without using any filter. Methodology: An image rejection mixer was initially designed without a power combiner, simulated using uSimmics, and photolithographically fabricated on a 0.25 mm thick Rogers Duroid substrate. After probing the in-phase and quadrature mixing outputs, these mixing products were combined using a modified lumped-element Wilkinson power combiner that completely ignored the even modes. Results: The final fabricated mixer occupies an area smaller than 3 cm \u00d7 2 cm. With an 8.6 GHz, 22 dBm local oscillator input, the image rejection mixer achieved a conversion loss of approximately 7.07 dB across the 8.5 GHz to 9 GHz frequency range. Conclusion: Overall, the outcomes of this study indicated how the lumped element Wilkinson power combiner can be advantageously changed and shrunk to reduce the physical size of the suggested image rejection mixer without significantly sacrificing the conversion efficiency.\n\nKeywords: COVID-19, Split-ring resonator, metamaterial, metasurface, hyperglycemia, hypoglycemia, image rejection mixer, Wilkinson power combiner\n<\/p>\n<!-- start copying the entry from here -->\n<\/div><\/td><\/tr><tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Quasi-Optic Biomedical Sensing at Millimeter-wave Frequencies,<\/strong><\/td>\n        <td>Phuoc Van Dang, Louis Wai Yip Liu, Jan Hesselbarth,<\/td>\n        <td> The International Conference of Multidisciplinary Research (ICMR 2025), 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n This paper presents the design and validation of a robust 60 GHz quasi-optical radar system for biomedical sensing, culminating in the identification of an optimal antenna configuration for practical use. Through a systematic comparison of 3.0 mm and 3.5 mm dielectric waveguides, both with and without a novel protective ePTFE coating, the 3.5 mm coated rod was unequivocally identified as the superior design. This configuration achieves a narrow 26\u00b0 beamwidth while, most critically, maintaining over 75% signal integrity under significant mechanical bending\u2014a key requirement for clinical applications. The system demonstrates a +5 to +15 dB gain improvement over the baseline sensor. A key contribution of this work was a cost-effective biomedical sensing method which enabled the directivity to be measured with the radar sensor in the absence of an vector network analyzer (VNA). This research establishes a complete, theory-driven methodology for developing mechanically resilient, high-performance mmWave antennas suitable for clinical-grade diagnostic devices.\nKeywords: Millimeter-wave radar, biomedical sensing, dielectric waveguide, quasi-optical systems, 60 GHz, pulsed coherent radar\n<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n<!-- Copy the template down to here -->\n<tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Wireless Power Transfer using Plasma at Ultrasonic Frequencies,<\/strong><\/td>\n        <td>Louis Wai Yip Liu, Truong Tran Hai Ninh, Huynh Nhat Nam, Khanh Nguyen Tuan, Timo Oster, Klaus Hofmann,<\/td>\n        <td> The International Conference of Multidisciplinary Research (ICMR 2025), 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n \n<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n<!-- Copy the template down to here -->\n<!-- Copy the template down to here -->\n<tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Glucose Measurement Without a Vector Network Analyzer<\/strong><\/td>\n        <td>Louis Wai Yip Liu, Thien Bui Vinh, Kiet Huynh Du, Jan Hesselbarth<\/td>\n        <td> The International Conference of Multidisciplinary Research (ICMR 2025), 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n \n<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n<tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Low Noise Amplifier (LNA) Design for 5G IoT Systems using 45 nm CMOS Technology<\/strong><\/td>\n        <td>Le Vu Dang Minh, Huynh Du Kiet, Tuan-Khanh Nguyen, Louis Wai Yip Liu<\/td>\n        <td> The International Conference of Multidisciplinary Research (ICMR 2025), 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n \n<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Frequency selective metasurface based radio frequency glucose sensor with a periodic array of meta cells<\/strong><\/td>\n        <td>Abhishek Kandwal, Sudershan Dutt, Louis WY Liu, Zedong Nie, Rohit Jasrotia, Choon Kit Chan, Ali M Almuhlafi, Hamsakutty Vettikalladi<\/td>\n        <td> Scientific Reports 14 (1), 25716<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n Nowadays, the operating principle of most of the experimental electromagnetic glucose sensors is based on the effect of an anomalous dispersion caused by a direct contact between an object under test and a two-dimensional metasurface. Due to the repeated uses, the metasurface will be subjected to a chemical attack over time. To avoid this problem, this work proposes a novel glucose sensor that is equipped with an interfacial dielectric layer of 0.254 mm thickness to separate the object under test and the metasurface. The results of our analysis suggest that, if the interfacial dielectric layer is sufficiently thin, there will be no shortage of sensitivity in the proposed sensor. Consistent with our theoretical prediction, the proposed sensor was found to resonate at 9\u201310 GHz, with its resonant frequency responding to the glucose concentration in a dose dependent manner. The correlation the resonant frequency shift and \u2026\n<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n      <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>A dual-band microwave sensor for glucose measurements utilizing an enclosed split ring metamaterial-based array<\/strong><\/td>\n        <td>Hamsakutty Vettikalladi Abhishek Kandwal, Ziheng Ju, Louis W.Y. Liu, Rohit Jasrotia, Choon Kit Chan, Zedong Nie, Ali M. Almuhlafi<\/td>\n        <td> Engineering Science and Technology, Vol. 62, 101947, 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n<\/p>Diabetes is currently a major public health concern, partly exacerbated by the recent outbreak of coronavirus. Most of the published EM-wave based glucose sensors of this date allow a glucose concentration to be determined through a resonance frequency shift, inevitably with a questionable accuracy. To overcome the accuracy problem, a dual-band glucose sensor with dimensions 50 mm \u00d7 20 mm is proposed in this work to enable a glucose concentration to be measured at one resonance frequency band and cross-checked at another. An array of split-ring resonators (SRRs) was fabricated at a rectangular sensing area on the top surface of a 0.3 mm thick PET substrate, forming a metasurface with dual resonance bands at 4.5 GHz and 9.2 GHz. The backside of the PET substrate was fabricated with a defected ground plane designed to suppress the Q-factor associated with 4.5 GHz while leaving the Q-factor associated with 9.2 GHz unchanged. During a glucose concentration measurement, a drop of glucose solution was applied to the rectangular metasurface sensing area. The glucose concentration was determined in the form of a resonance frequency shift of the reflection coefficient at 4.5 GHz and a magnitude change of the reflection coefficient at 9.2 GHz. Consistent with our theoretical prediction, the fabricated sensor has indeed exhibited a dual resonant band characteristics, with one resonance occurring at 4.5 GHz and the other at 9.2 GHz. By measuring the reflection coefficient near 4.5 GHz, a positive and linear correlation in the log scale was observed between the glucose concentration and the resonant frequency shift with a sensitivity of 0.6 \n. At 9.2 GHz, there was no significant resonant frequency shift with varying glucose concentrations, but the magnitude of the reflection coefficient changed with the glucose concentration nonlinearly in an amount-dependent manner, with a sensitivity of 16.6 dB per unit glucose concentration within the clinical diabetic range. Overall, the log scale of the glucose concentration has exhibited a positive and linear correlation within the clinical diabetic range with both the resonant frequency shift at 4.5 GHz and the magnitude change at 9.2 GHz, thereby allowing the glucose concentration to be measured at 4.5 GHz and further cross-checked at 9.2 GHz at the same time.\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n      <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Emerging EM wave sensors for non-invasive glucose monitoring: Review, techniques and developments<\/strong><\/td>\n        <td>Choon Kit Chan, Sudershan Dutt, Rajat Thakur, Abhishek Kandwal, Pawan Kumar, Rohit Jasrotia, Natrayan Lakshmaiya, Louis WY Liu, Sachin Kumar , Bancha Luadang<\/td>\n        <td>Sensors and Actuators Reports, Vol. 9, 100282, 2025.<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\n As a chronic disease, diabetes has impacted millions of individuals across the globe and is spreading at a very fast rate among adults mainly. Continuous observations of essential indicators like pulse rate, arterial pressure, and blood sugar levels, and oxygen saturation are crucial to maintain a healthy life and preventing severe complications associated with these. Using non-invasive method of blood glucose monitoring has paved its way to be one of the most prominent safest technique without harming the skin of the patients. This examination delves into the application of planar resonant sensors utilizing microwaves for quantifying glucose concentrations. The sensors based on RF EM waves mainly operating in the region from few MHz to GHz frequencies have garnered notable attention in the scientific community in recent years due to their significant contributions. They can detect alterations in dielectric properties caused by fluctuations in glucose concentrations. These sensors exhibit electrical reactions that rely on the dielectric properties of their surroundings. This review offers a current assessment of this sensing methodology, categorized by sensing parameters, and suggests typical non-invasive microwave sensor varieties for assessment. It further examines the key aspects of different sensor types, outlines potential future avenues, and addresses challenges in the field of glucose monitoring.\n<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n    \n    <\/tbody><tbody>\n      <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Glucose Sensing at RF\/Microwave Frequencies: Review and Portability Issues<\/strong><\/td>\n        <td>Thien Bui Vinh, Thao Dinh Thu,  Anh Le Hoang Van, Louis Wai Yip Liu<\/td>\n        <td>in Emerging Diagnostic Glucose Sensing Approaches, Elsevier, Paperback ISBN: 9780443363481 or 9780443363498 (ebook), 2025, ch. 9, Pages 163-183<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong> \nGlucose monitoring is a critically important issue of health care, particularly in the aftermath of the COVID pandemic. \nIn the field of glucose sensing, the issues currently receiving major attention from the research community include the \naccuracy, sensitivity, ease of use, repeatablity of measurements, selectivity and portability. Most of the published \nelectromagnetic-wave (EM) based glucose sensors of this date have reasonable degrees of accuracy, sensitivity, ease of \nuse, repeatability and selectivity, but these sensors must be operated in conjunction with a vector network analyzer, \nwhich is not only an expensive but also bulky and difficult to use. At the time of this writing, there is hardly any \nsensor capable of differentiating glucose from other substances such as water, fat, bones and some other glucose like \ncompounds. Only a small subset of experimental devices have been through the in-vivo trials. In this work, the background \nunderstanding as well as the current status of the research in glucose sensing are reviewed with particular reference given \nto the important findings contributing to improvement in terms of portability. Overall, more research is needed in the areas \nof in-vivo tests, portability and selectivity.<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n      <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Roles of Surface Waves and Goubau Lines<\/strong><\/td>\n        <td>Louis W.Y. Liu, Tuan Nguyen Thien, Hoang Le Ha Bao, Phuoc Dang Van, Huy Cao Ngoc Nhat, Ninh Truong Tran Hai<\/td>\n        <td>in Emerging Diagnostic Glucose Sensing Approaches, Elsevier, Paperback ISBN: 9780443363481 or 9780443363498 (ebook), 2025, ch.10, Pages 185-207<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong>\nSurface electromagnetic waves (also known as surface plasmon polaritons or SPP\u2019s) propagate in the form of a slow \ntravelling waves along the interface between one dielectric material and one highly conductive material. Since the \ngroup velocity of SSP is always less than the speed of light, it has a tendency of sub-wavelength confinement of \nelectromagnetic waves at frequency below the plasma frequency.  The idea of SSP has been further extended to spoof \nsurface plasmon polaritons (SSPP), allowing the slow-wave nature of metamaterials or the like to be integrated in \nRF\/microwave circuits. This paper takes advantage of some of the already known but seemingly unrelated features of \nSSPP\u2019s to explain the role of glucose sensing in a slow wave medium. Particular reference has been given to the \nevolution from SSPP\u2019s to glucose sensing using an SSPP based antenna. The presentation of this work has been \nsubstantiated with a successfully replicated experiment.\n<br><br>\n<strong>Keywords \u2014 <\/strong>antenna, RF ground, capacitance, spark gap,current harmonics, transmission line input impedance, wireless power transfer, surface plasmon polaritons.<\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n      <tr class=\"pub-row\" onclick=\"toggleAbstract(this)\">\n        <td><strong>Sensing and Control: Future and Vision<\/strong><\/td>\n        <td>Phuoc Dan Van, Louis Wai Yip Liu, Jan Hesselbarth, Suresh Kumar<\/td>\n        <td>in Emerging Diagnostic Glucose Sensing Approaches, Elsevier, Paperback ISBN: 9780443363481 or 9780443363498 (ebook), 2025, ch.13, Pages 247-259<\/td>\n      <\/tr>\n      <tr class=\"abstract-row\">\n        <td colspan=\"3\">\n          <div class=\"abstract-content\">\n            <p><strong>Abstract:<\/strong> \nIn the field of dielectric sensing using electromagnetic waves, most of the studies of this date currently focus excessively on in-vitro measurement of an dielectric object under test. However, what was more urgently needed in the aftermath of the COVID pandemic was a functional device appropriate for in-vivo sensing.  This paper reviews the status of in-vivo sensing, followed by proposing an extension of the existing research coverage from the conventional in-vitro contact based sensing to a non-contact based in-vivo sensing. With the rising need for non-contact biomedical sensing, millimeter-wave radars have emerged as promising tools for detecting vital signs and dielectric contrasts in biological tissue. A 60 GHz coherent radar (Acconeer XM125) with quasi-optical components was adopted to investigate the detectability of shallow inclusions that mimic tumors. Four phantom conditions were prepared: a water box, flat metal surface, empty box (control), and phantom box with saline-soaked sponge (inclusion). Each condition was measured in three runs by recording radar returns, with analysis focused on amplitude variations across distance. A consistent amplitude difference was observed between the control and inclusion phantoms, confirming that the radar can detect shallow dielectric anomalies. This proof-of-concept experiment is an ongoing feasibility study that investigates the sensitivity of millimeter-wave radar to surface inclusions,. The future work can be directed at in-vivo sensing of blood glucose on the tongue, or sublingual gland, millimeter-wave imaging of mouth tumors, millimeter-wave glucose sensing without any VNA and improvement of phantom and exploration of lower frequencies for deeper penetration. <\/p>\n            <br>\n            <p><a href=\"#\" target=\"_blank\" style=\"font-weight: bold;\">Click to access this Publication (to be announced)<\/a><\/p>\n          <\/div>\n        <\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n<style>\n.publication-container {\n  max-width: 800px;\n  padding-bottom: 10px;\n}\ntable {\n  width: 100%;\n  border-collapse: collapse;\n  font-family: Arial, sans-serif;\n  font-size: 14px;\n}\nth, td {\n  padding: 12px 16px;\n  border-bottom: 1px solid #ccc;\n  text-align: left;\n}\nth {\n  background-color: #333;\n  color: white;\n  cursor: pointer;\n}\n.pub-row {\n  transition: transform 0.7s, box-shadow 0.7s;\n  background-color: #fff;\n  color: black;\n}\n.pub-row td:first-child strong {\n  color: red;\n}\n.pub-row:hover {\n  transform: translateY(-5px);\n  box-shadow: 0px 8px 20px rgba(0, 0, 0, 0.3);\n}\n.abstract-row {\n  max-height: 0;\n  height: auto;\n  text-align: justify;\n}\n.abstract-row td {\n  padding: 0 !important;\n  border-bottom: 1px solid black;\n}\n.abstract-content {\n  max-height: 0;\n  overflow: hidden;\n  text-align: justify;\n  opacity: 0;\n  padding: 0 18px;\n  transition: max-height 0.85s ease-in-out, opacity 0.8s ease-in-out, padding 0.85s ease-in-out;\n}\n.abstract-content a {\n  color: rgb(105, 105, 255);\n  text-decoration: underline;\n}\n.abstract-row.open .abstract-content {\n  max-height: 1000px;\n  opacity: 1;\n  padding: 18px;\n}\n  .mobile-swipe-hint {\n    display: none;\n    font-style: italic;\n    font-weight: bold;\n    opacity: 0.85;\n    margin-bottom: 8px;\n  }\n@media screen and (max-width: 600px) {\n  .publication-container {\n    overflow-x: auto;\n  }\n  table {\n    width: 150%;\n    display: block;\n  }\n  th, td {\n    font-size: 14px;\n  }\n  .abstract-content {\n    font-size: 14px;\n  }\n  .mobile-swipe-hint {\n    display: block;\n    padding-bottom: 5px;\n  }\n\/* special bottom scroll bar for mobile display *\/\n.publication-container::-webkit-scrollbar {\n  height: 14px;\n}\n.publication-container::-webkit-scrollbar-track {\n  background: rgba(0,0,0,0.08);\n  border-radius: 10px;\n  margin: 1.5px 0;\n}\n.publication-container::-webkit-scrollbar-thumb {\n  background: rgba(255, 255, 255, 0.8);\n  border-radius: 10px;\n  border: 1px solid transparent;\n  background-clip: content-box;\n}\n.publication-container::-webkit-scrollbar-thumb:hover {\n  background: rgb(82, 82, 82);\n}\n\/* special top scroll bar for mobile display *\/\n.scrollbar-top {\n  overflow-x: auto;\n  overflow-y: hidden;\n  height: 14px;\n  margin-bottom: 20px;\n  background: transparent;\n}\n.scrollbar-top-inner { width: 150%; height: 2px; }\n.scrollbar-top::-webkit-scrollbar {\n  height: 14px;\n}\n.scrollbar-top::-webkit-scrollbar-track {\n  background: rgba(0,0,0,0.08);\n  border-radius: 10px;\n  margin: 1.5px 0;\n}\n.scrollbar-top::-webkit-scrollbar-thumb {\n  background: rgba(255, 255, 255, 0.8);\n  border-radius: 10px;\n  border: 1px solid transparent;\n  background-clip: content-box;\n}\n.scrollbar-top::-webkit-scrollbar-thumb:hover {\n  background: rgb(82, 82, 82);\n}\n}\n<\/style>\n<script>\nfunction toggleAbstract(row) {\n  const allAbstracts = document.querySelectorAll('.abstract-row');\n  allAbstracts.forEach(abstractRow => {\n    if (abstractRow !== row.nextElementSibling) {\n      abstractRow.classList.remove('open');\n    }\n  });\n  const nextRow = row.nextElementSibling;\n  if (nextRow && nextRow.classList.contains('abstract-row')) {\n    nextRow.classList.toggle('open');\n  }\n}\nfunction sortTable() {\n  const table = document.getElementById(\"publicationTable\");\n  const rows = Array.from(table.rows).slice(1); \/\/ exclude header\n  const sortedRows = [];\n  for (let i = 0; i < rows.length; i += 2) {\n    sortedRows.push([rows[i], rows[i + 1]]);\n  }\n  sortedRows.sort((a, b) => {\n    const titleA = a[0].cells[0].innerText.toLowerCase();\n    const titleB = b[0].cells[0].innerText.toLowerCase();\n    return titleA.localeCompare(titleB);\n  });\n  const tbody = table.querySelector(\"tbody\");\n  tbody.innerHTML = \"\";\n  sortedRows.forEach(pair => {\n    tbody.appendChild(pair[0]);\n    tbody.appendChild(pair[1]);\n  });\n}\n\/\/ Top scroll bar script: testing version\nwindow.addEventListener('load', () => {\n  const tableContainer = document.querySelector('.publication-container');\n  const topScroll = document.querySelector('.scrollbar-top');\n  const topInner = document.querySelector('.scrollbar-top-inner');\n  function syncScrollWidth() {\n    topInner.style.width = tableContainer.scrollWidth + 'px';\n  }\n  syncScrollWidth();\n  window.addEventListener('resize', syncScrollWidth);\n  topScroll.addEventListener('scroll', () => {\n    tableContainer.scrollLeft = topScroll.scrollLeft;\n  });\n  tableContainer.addEventListener('scroll', () => {\n    topScroll.scrollLeft = tableContainer.scrollLeft;\n  });\n});\n<\/script>\n\n\n\n<style>\n  .responsive-line {\n    width: 100%;\n    display: flex;\n    text-align: center;\n    margin: 1em 0;\n  }\n  .responsive-line-inner {\n    display: block;\n    width: 100%;\n    max-width: 800px;\n    margin: 0 auto;\n    border-top: 3px solid #000000;\n  }\n  body.dark-mode .responsive-line-inner {\n    border-top: 3px solid #ffffff;\n  }\n<\/style><div class=\"responsive-line cinematic\"><div class=\"responsive-line-inner\"><\/div><\/div>\n\n\n\n<br\/><p style=\"text-align:center;\"><strong>\ud83d\udce2 Research and applications are being actively pursued by the program&#8217;s faculty as well as our students in various fields. Some of the most profound publications and achievements will be updated soon. Stay tuned for more!<\/strong><\/p>\n\n\n\n<style>\n  .cinematic {\n    opacity: 0;\n    transform: translateY(20px) scale(0.98);\n    filter: blur(4px);\n    transition: opacity 1.2s ease, transform 1.2s ease, filter 1.2s ease;\n  }\n  .cinematic.show {\n    opacity: 1;\n    transform: translateY(0) scale(1);\n    filter: blur(0);\n  }\n<\/style>\n<script>\ndocument.addEventListener(\"DOMContentLoaded\", function() {\n  const items = document.querySelectorAll(\".cinematic\");\n  const observer = new IntersectionObserver(entries => {\n    entries.forEach(entry => {\n      if (entry.isIntersecting) {\n        entry.target.classList.add(\"show\");\n        observer.unobserve(entry.target);\n      }\n    });\n  }, { threshold: 0.15 });\n  items.forEach(item => observer.observe(item));\n});\n<\/script>\n\n\n\n<\/div>\n<style>\n.page-wrapper-global {\n    max-width: 800px;\n    margin: 0 auto;\n    padding: 0 14px;\n    box-sizing: border-box;\n}\n.page-wrapper-global img,\n.page-wrapper-global video,\n.page-wrapper-global iframe {\n    max-width: 100%;\n    height: auto;\n    display: block;\n} \/* Prevent overflow *\/\n<\/style>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Explore research publications authored by our faculty, students, and industry collaborators, showcasing the academic contributions of the MEE program at VGU. These works reflect our commitment to advancing knowledge in Radio Frequency \/ Microwave \/ Millimeter-waves, Antennas Systems, Communications, and Microelectronics. This collection is expanding for each academic intake, highlighting innovative research, pratical engineering solutions, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":16,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1488","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/pages\/1488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/comments?post=1488"}],"version-history":[{"count":182,"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/pages\/1488\/revisions"}],"predecessor-version":[{"id":4327,"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/pages\/1488\/revisions\/4327"}],"up":[{"embeddable":true,"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/pages\/16"}],"wp:attachment":[{"href":"https:\/\/mee.vgu.edu.vn\/home\/wp-json\/wp\/v2\/media?parent=1488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}