News
December 02, 2024
Dr. Xian has been elevated to the grade of IEEE Senior Member! Congratulations!
November 20, 2024
Our paper "Metal-Organic Frameworks (MOFs)-Based Piezoelectric-Colorimetric Hybrid Sensor for Monitoring Green Leaf Volatiles" has been accepted for publication in ACS Sensors. Please read more here: https://doi.org/10.1021/acssensors.4c02016Â
November 19, 2024
Dr. Xian delivered an invited talk in the 2024 Ovarian Cancer Midwest Focus (OCMF) Conference, Sioux Falls, South Dakota. The title of the talk is "Point-of-Care Assessment of Anticancer Drug Dosage for Evaluating the Efficacy of Cancer Treatment."
November 01, 2024
Dr. Xian delivered an invited talk in the NSF I-CORPS at SDSU Pitch Day, Brookings, South Dakota. The title of the talk is "HypoxiTrackTM, A Wearable, Accurate, and Inclusive Hypoxemia Monitor."
October 29, 2024
Dr. Xian delivered an invited talk in the University of South Dakota (USD) Chemistry Seminar, in Vermillion, South Dakota. The title of the talk is "Wearable Chemical and Biosensors for Environmental Health Monitoring and Assessment."
October 17, 2024
Our paper "A Metal-Organic Framework-Based Colorimetric Sensor Array for Transcutaneous CO2 Monitoring via Lensless Imaging" has been accepted for publication in Biosensors. Please read more here: https://doi.org/10.3390/bios14110516
October 09, 2024
Our paper "CVD-Synthesized Titanium Carbide Nanoflowers as High-Performance Anode for Sodium-Ion Batteries" has been accepted for publication in Nano Letters. Please read more here: https://doi.org/10.1021/acs.nanolett.4c03597
October 07, 2024
Our paper "Optical Sensors for Transdermal Biomarker Detection: A Review" has been accepted for publication in Biosensors and Bioelectronics. Please read more here: https://doi.org/10.1016/j.bios.2024.116844
September 26, 2024
Dr. Xian delivered an invited talk in the Biomedical Engineering Society (BMES) Meeting, Brookings, South Dakota. The title of the talk is "Wearable Sensors and Devices for Biomarker Detection and Healthcare Monitoring."
September 09, 2024
Yuhang Xia joined our research group as a MS student. Welcome Yuhang!
September 04, 2024
Matthew Wieberdink joined our research group as an undergraduate research assistant. Welcome Matt!
August 26, 2024
Jiahui Yuan joined our research group as a PhD student. Welcome Jiahui!
August 22, 2024
Our paper "Low-Cost and Point-of-Use Sensing Device Based on 2D Diffusion-Controlled Colorimetric Sensing Array for Continuous and Multiplexed Air Pollution Monitoring" has been accepted for publication in ACS ES&T Engineering. Please read more here: https://doi.org/10.1021/acsestengg.4c00416
August 19, 2024
Dr. Xian gave a talk in the Division of Analytical Chemistry in ACS Fall 2024 in Denver, CO. The title of the talk is "High-Performance Micro Quartz Tuning Fork (MQTF)-Based Gas Sensors for Air Pollutant Monitoring."
May 22, 2024
Syed Ahmed joined our research group as a MS student. Welcome Syed!
May 21, 2024
Dr. Xian gave a invited talk in the 4th International Electronic Conference on Biosensors. The title of the talk is "CMOS Imager-Based Wearable Sensors for Environmental Health Monitoring."
March 06, 2024
Dr. Xian gave a talk in the 20th Anniversary Symposium for the Biodesign Center for Bioelectronics and Biosensors at Arizona State University, Tempe, AZ. The title of the talk is "Wearable Sensing for Environmental Health Monitoring."
February 12, 2024
Our paper "Highly Sensitive and Reversible MXene-Based Micro Quartz Tuning Fork Gas Sensors with Tunable Selectivity" has been accepted for publication in njp 2D Materials and Applications. Please read more here: https://www.nature.com/articles/s41699-024-00452-1
January 11, 2024
Our paper "A Novel Colorimetric Tuning Fork Sensor for Ammonia Monitoring" has been accepted for publication in Sensors and Actuators B-Chemical. Please read more here: https://www.sciencedirect.com/science/article/abs/pii/S0925400524000716
October 29, 2023
Our paper "Frontiers of Wearable Biosensors for Human Health Monitoring" has been accepted for publication in Biosensors. Please read more here: https://www.mdpi.com/2079-6374/13/11/964
September 21, 2023
Jyotshna Pokharel successfully passed her PhD defense. The title of her dissertation is "Electrochemical Innovations: Advancements in Lithium Metal Batteries & Supercapacitor for Energy Storage." Congratulations, Dr. Pokharel!
August 14, 2023
Amirhossein Amjad joined our research group as a PhD student. Welcome Amir!
July 19, 2023
Buddhi Lamsal successfully passed his PhD defense. The title of his dissertation is "Nitrogen Plasma Treatment on Triple Cation Mixed Halide Perovskite Surface for High Efficiency Perovskite Solar Cells." Congratulations, Dr. Lamsal!
July 18, 2023
Sarwar Ahmed successfully passed his MS defense. The title of his thesis is "NiO Nanoparticles-Decorated Carbon Fiber Cloth As Lithiophilic Host Material For Stable Lithium Metal Batteries." Congratulations, Sarwar!
April 17, 2023
Our paper "Diffusion-Modulated Colorimetric Sensor for Continuous Ammonia Detection" has been accepted for publication in IEEE Sensors Journal. Please read more here: https://ieeexplore.ieee.org/document/10107696
March 27, 2023
Dr. Xian gave a talk in the Division of Analytical Chemistry in ACS Spring 2023. The title of the talk is "Diffusion-modulated colorimetric sensors for continuous gas monitoring."
March 23, 2023
Wei He successfully passed his PhD defense. The title of his dissertation is "Electrode And Electrolyte Design to Develop Advanced Battery Technologies for Large Scale Energy Storage." Congratulations, Dr. He!
March 19, 2023
Dr. Xian gave an invited talk on 2023 Pittcon Gas Sensor Symposium at Philadelphia, PA on March 19, 2023. The title of the talk is "Colorimetric Gas Sensors for Air Quality Monitoring and Biomarker Detection."
December 28, 2022
Rick Kittleson Receives Future Innovators Fellowship from Jerome J. Lohr College of Engineering
Highlights
Kittleson, a senior from Baltic, will work under the direction of assistant professor Xiaojun Xian on a project that uses chemical sensing to detect changes in health.Â
Kittleson is awarded $5,000 with $4,500 as a stipend and $500 to cover the cost of lab supplies or travel to disseminate the results of the project.
News Link
October 20, 2022
Prof. Xian gave invited talk in Biomedical Engineering Society (BMES) Meeting
Highlights
Prof. Xian was invited to give a talk in Biomedical Engineering Society (BMES) Meeting in Brookings, SD.
The title of the talk is "Wearable Sensors and Devices for Healthcare Monitoring".
October 06, 2022
Our paper "A Multiplexed Chemical Sensing CMOS Imager" has been accepted for publication in ACS Sensors. Please read more here: https://pubs.acs.org/doi/abs/10.1021/acssensors.2c01277
November 13, 2021
Prof. Xian gave invited talk in Midwest Applied Materials Symposium (MAMS)
Highlights
Prof. Xian was invited to give a talk in Midwest Applied Materials Symposium (MAMS) in Brookings, SD.
The title of the talk is "Wearable Bio/Chemical Sensors for Biomarkers and Personal Exposure Monitoring".
October 14, 2021
Our paper on skin biomarkers detection was published in Biosensors and Bioelectronics
Highlights
A wearable biosensing system for transdermal biomarkers detection
Noninvasive, low-cost, and wearable tool for assessing dietary macronutrients
The gradient-based colorimetric array capable for multiplexed detection of multiple analytes simultaneously
Paper Link
Jingjing Yu, Di Wang, Vishal Varun Tipparaju, Wonjong Jung, and Xiaojun Xian, Detection of Transdermal Biomarkers of Macronutrients Intake Using Gradient-Based Colorimetric Array Sensor, Biosensors and Bioelectronics, 195, 113650 (2022)
September 23, 2021
Our paper on mitigation of data packet loss in wearable healthcare ecosystem was published in Biosensors
Highlights
Systematically evaluated packet losses in Android and iOS based wearable ecosystems
Developed a mitigation protocol to address the data packet loss issue in Bluetooth Low Energy (BLE) for wearable healthcare ecosystems
Paper Link
Vishal Varun Tipparaju, Kyle Mallires, Di Wang, Francis Tsow, and Xiaojun Xian, Mitigation of Data Packet Losses in Bluetooth Low Energy for Wearable Ecosystem, Biosensors, 11, 350 (2021)
July 15, 2021
Our paper on hydrogel-assisted colorimetric sensors was published in Sensors and Actuators B: Chemical
Highlights
Water-rich hydrogel-incorporated colorimetric gas sensor with high humidity tolerance
Real-time detection of environmental gases in high humid conditions
Paper Link
Jingjing Yu, Francis Tsow, Mora, S. Jimena, Vishal Varun Tipparaju, and Xiaojun Xian, Hydrogel-Assisted Colorimetric Sensors with High Humidity Tolerance for Environmental Gases Sensing, Sensors and Actuators B: Chemical, 345, 130404 (2021)
May 24, 2021
Our paper on wearable transcutaneous CO2 monitor was published in IEEE Sensors Journal
Highlights
Developed a truly wearable sensor for continuous monitoring of transcutaneous carbon dioxide
Integrated a miniaturized nondispersive infrared sensor with a hydrophobic membrane to address the humidity interference
Paper Link
Vishal Varun Tipparaju, Sabrina Jimena Mora, Jingjing Yu, Francis Tsow, Xiaojun Xian, Wearable Transcutaneous CO2 Monitor Based on Miniaturized Nondispersive Infrared Sensor, IEEE Sensors Journal, 21, 17327-17334 (2021)
January 15, 2021
Our paper on mitigation of humidity interference in colorimetric gas sensors was published in ACS Sensors
Highlights
Analyzed the mechanisms of the humidity interferenceÂ
Discussed the approaches to eliminate the humidity interference in colorimetric sensing of environmental gases and breath biomarkers
Paper Link
Jingjing Yu, Di Wang, Vishal Varun Tipparaju, Francis Tsow, and Xiaojun Xian, Mitigation of Humidity Interference in Colorimetric Sensing of Gases, ACS Sensors, 6, 2, 303-320 (2021)
October 26, 2020
Congratulations to Vishal for successfully passing his PhD dissertation defense!
Highlights
Vishal Varun Tipparaju defended a PhD thesis "Wearable Devices for Non-Invasive Cardiorespiratory Monitoring" on October 26, 2020.
Vishal will work as a Senior software Engineer in Amazon.
Congratulations, Vishal!! Wish you a successful career!
September 12, 2020
Our paper on respiration pattern recognition by wearable mask device was published in Biosensors and Bioelectronics
Highlights
Designed and built a wearable, stand-alone, fully integrated mask device for accurate tracking of respiration in free-living conditions
Accurate measurement of respiratory rate, tidal volume, respiratory minute volume, and peak flow rate
Respiration pattern recognition via Principle Component Analysis (PCA) algorithms
Paper Link
Vishal Varun Tipparaju, Di Wang, Jingjing Yu, Fang Chen, Francis Tsow, Erica Forzani, Nongjian Tao, and Xiaojun Xian, Respiration Pattern Recognition by Wearable Mask Device, Biosensors and Bioelectronics, 169, 112590 (2020)