Article
Biotechnology & Applied Microbiology
Kyle Smith, Ching-Yi Lin, Yann Gilpin, Elizabeth Wayne, Marc Dandin
Summary: We report the use of a lab-on-CMOS biosensor platform to quantitatively track the proliferation of RAW 264.7 murine Balb/c macrophages. The proliferation of macrophages correlates linearly with the average capacitance growth factor measured at multiple electrodes in the sensing area. We also propose a temporal model that describes the evolution of cell numbers over long periods of time and relates them to the average capacitance growth factor.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Huijuan Zhang, Dong Wang, Duan Zhang, Tongtong Zhang, Longkun Yang, Zhipeng Li
Summary: A surface-enhanced Raman scattering (SERS) substrate functionalized with I- was developed for rapid and sensitive Hg2+ sensing on a microfluidic platform. The sensor demonstrated fast response, high sensitivity, and good selectivity towards Hg2+, with detectable concentrations as low as 1 fM. Real water sample detection showed promising results for on-site Hg2+ detection.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Samith Hettiarachchi, Gehan Melroy, Amith Mudugamuwa, Peshan Sampath, Charith Premachandra, Ranjith Amarasinghe, Van Dau
Summary: This paper discusses the modeling, simulation, and experimentation of an active droplet generator used in LOC devices, focusing on the key factor of droplet generation. The study found that optimized droplet contraction width and flow rate ratios are crucial for effective droplet generation. Experimental results show that droplet formation occurs within a certain range of flow rate ratios, with droplet diameter decreasing as the flow rate ratio decreases.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Biochemical Research Methods
R. D. Allert, F. Bruckmaier, N. R. Neuling, F. A. Freire-Moschovitis, K. S. Liu, C. Schrepel, P. Schaetzle, P. Knittel, M. Hermans, D. B. Bucher
Summary: Lab-on-a-chip (LOC) applications have become important scientific tools, offering miniaturization, complex functionality, reproducibility, and high throughput. However, extensive sensor miniaturization is needed for full advantage, which has been challenging for quantum sensors. This study presents a fully integrated microfluidic platform for solid-state spin quantum sensors, enabling novel chemical analysis capabilities within LOC devices.
Article
Engineering, Multidisciplinary
Agnieszka Krakos (Podwin), Anna Janicka, Justyna Molska, Maciej Zawis, Danylo Lizanets, Tomasz Bialecki, Bartosz Gawron, Tomasz Suchocki
Summary: This paper presents a lab-on-a-chip (LOC) for cellular studies and verifies its performance through numerical simulations and biological experiments. The toxicity of jet fuels on cells was evaluated using Euglena gracilis as a bioindicator. Exhaust gas chromatography analysis showed that the concentration of the most toxic BTEX group increased about two times with the addition of HEFAtype hydrocarbons.
Article
Chemistry, Multidisciplinary
Cristina Chircov, Alexandra Catalina Birca, Bogdan Stefan Vasile, Ovidiu-Cristian Oprea, Keng-Shiang Huang, Alexandru Mihai Grumezescu
Summary: This study investigated a one-step synthesis and functionalization of magnetite nanoparticles using microfluidics, and characterized the obtained nanoparticles using various analysis methods. The results demonstrated the potential of microfluidic platform for developing functionalized MNPs.
Article
Chemistry, Analytical
Tana Sebechlebska, Eva Vaneckova, Marta Katarzyna Choinska-Mlynarczyk, Tomas Navratil, Lukasz Poltorak, Andrea Bonini, Federico Vivaldi, Viliam Kolivoska
Summary: Fused deposition modeling 3D printing using electrically conductive filaments is an attractive tool for manufacturing sensing devices. This study explores the capabilities of 3D printed electrodes to measure electric properties of materials. The authors demonstrate the functionality of a bimaterial FDM-3DP platform for sensing conductivity and permittivity of liquids by impedance measurements. Additionally, they propose an original idea of using impedance measurements to investigate dimensions of 3D printed channels as base structures of microfluidic devices, complemented by optical microscopic analysis.
ANALYTICAL CHEMISTRY
(2022)
Review
Pharmacology & Pharmacy
Renata Maia, Violeta Carvalho, Rui Lima, Graca Minas, Raquel O. Rodrigues
Summary: This systematic review summarizes the recent progress in the use of microneedles (MNs) in biomedical applications, including drug delivery, biomarker detection, and their potential integration with microfluidic devices. Although MNs have been extensively utilized in lab-on-a-chip platforms, recent studies have also explored their applicability in organ-on-a-chip models. Overall, the presence of MNs in advanced microfluidic devices offers simplified drug delivery, microinjection, and biomarker detection through integrated biosensors, enabling real-time monitoring of various biomarkers in lab- and organ-on-a-chip platforms.
Review
Chemistry, Analytical
Peng Zhou, Wei Quan, Kai Wei, Zihua Liang, Jinsheng Hu, Lu Liu, Gen Hu, Ankang Wang, Mao Ye
Summary: In recent years, chip-scale atomic devices, especially chip-scale atomic magnetometers, have shown great potential in biomedical imaging, such as high resolution magnetocardiography and magnetoencephalography. This paper reviews the application of vertical cavity surface emitting lasers (VCSELs) as integrated pumping sources in chip-scale atomic devices. It discusses the integration of VCSELs in various atomic bio-sensing devices with different operating environments, the mode and polarization control of VCSELs in specific applications, and the packaging of VCSELs based on different atomic devices. Finally, it provides a detailed review of VCSEL-based chip-scale atomic magnetometers used for cardiac and brain magnetometry.
Article
Materials Science, Characterization & Testing
Remilson Cruz, Muhammad Nisar, Humberto Palza, Mehrdad Yazdani-Pedram, Hector Aguilar-Bolados, Raul Quijada
Summary: The use of biodegradable polymers to reduce environmental pollution has become a popular topic of research. This study synthesized graphene oxide (GO) nanoparticles functionalized with alkylamines and used them as fillers in PLA nanocomposites. The results showed that the addition of modified GO improved the barrier properties of PLA, making it suitable for food packaging applications.
Article
Chemistry, Analytical
Zimu Li, Min Zhu, Fang Li, Zhi Li, Anqi Zhao, Mohammad A. Haghighatbin, Hua Cui
Summary: This study presents a multicolor chemiluminescence sensing strategy for the discrimination of five antioxidants. By fabricating multilayer paper chips and utilizing chemiluminescence reactions, unique R, G, and B values were generated in the chemiluminescence images for antioxidant discrimination. The experimental results demonstrate the accuracy and feasibility of this strategy in identifying antioxidants.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Review
Pharmacology & Pharmacy
Ghazal Shabestani Monfared, Peter Ertl, Mario Rothbauer
Summary: Cutaneous wound healing is a complex process involving cell communication events and cell migration to achieve wound closure. Microfluidic and lab-on-a-chip technologies have improved in vitro wound healing assays to create more reliable models resembling the in vivo wound microenvironment.
Article
Chemistry, Multidisciplinary
Hao Dong, Xubin Zheng, Chen Cheng, Libin Qian, Yaoxuan Cui, Weiwei Wu, Qingjun Liu, Xing Chen, Yanli Lu, Qing Yang, Fenni Zhang, Di Wang
Summary: By leveraging dual-focus imaging, a complementary metal-oxide-semiconductor (CMOS) imager is transformed into a compact multimodal sensing platform capable of detecting visual information, chemicals, temperature, and humidity, and outputting them as a single image. It has been applied to micro-vehicles for multimodal environmental sensing and mapping, as well as to a multimodal endoscope for simultaneous imaging and chemical profiling along a porcine digestive tract. This multimodal CMOS imager is compact, versatile, and extensible, making it suitable for applications in microrobots, in vivo medical apparatuses, and other microdevices.
Article
Chemistry, Analytical
Lijiao Zu, Yu Chen, Jiwei Xie, Weiru Liu, Yue Feng, Zhaochuan Zhang, Xiujuan Zhao, Yan Ma, Qian Fang, Kaiwei Li, Tuan Guo, Mingxian Liu, Hui Wu
Summary: We propose a novel approach of using a nanotube-functionalized and microfluidic-controlling multiresonance optical fiber sensor for in situ and highly sensitive monitoring of tumor cells. The sensor can rapidly capture and precisely quantify tumor cells, enabling unambiguous discrimination between normal and tumor cells within a few minutes based on the spectral area interrogation method. It provides high sensitivity and a linear response for a large cell concentration range.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Harry Dawson, Jinane Elias, Pascal Etienne, Sylvie Calas-Etienne
Summary: The integration of optical circuits with microfluidic lab-on-chip devices has brought about new possibilities for sample manipulation and detection at the micro-scale, particularly in bio-chemical applications. However, challenges remain due to the complexity of combining photonics with micro-fabricated systems, which limits the industrial scaling of this technology.