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The use of a centrifugal microfluidic platform is an alternative to classical chromatographic procedures for radiochemistry. An ion-exchange support with respect to the light-addressable process of elaboration is specifically designed to be incorporated as a radiochemical sample preparation module in centrifugal microsystem devices. This paper presents a systematic study of the synthesis of the polymeric porous monolith poly(ethylene glycol methacrylate-co-allyl methacrylate) used as a solid-phase support and the versatile and robust photografting process of the monolith based on thiol-ene click chemistry. The polymerization reaction is investigated, varying the formulation of the polymerisable mixture. The robustness of the stationary phase was tested in concentrated nitric acid. Thanks to their unique "easy-to-use" features, centrifugal microfluidic platforms are potential successful candidates for the downscaling of chromatographic separation of radioactive samples (automation, multiplexing, easy integration in glove-boxes environment, and low cost of maintenance).
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http://dx.doi.org/10.3390/mi7030045 | DOI Listing |
Nan Fang Yi Ke Da Xue Xue Bao
August 2025
Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
Objectives: To synthesize a temperature-responsive multimodal motion microrobot (MMMR) using temperature and magnetic field-assisted microfluidic droplet technology to achieve targeted drug delivery and controlled drug release.
Methods: Microfluidic droplet technology was utilized to synthesize the MMMR by mixing gelatin with magnetic microparticles. The microrobot possessed a magnetic anisotropy structure to allow its navigation and targeted drug release by controlling the temperature field and magnetic field.
Adv Healthc Mater
September 2025
Micro and Nanosystems, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden.
Sepsis is a time-critical condition causing over 13 million deaths annually, with each hour of treatment delay in patients with septic shock increasing mortality by 8%. Rapid pathogen identification is crucial, yet current workflows depend on multiple culture steps that delay pathogen identification and targeted treatment by days. A plug-and-play, fully automated centrifuge tube is presented that isolates and concentrates bacteria directly from blood or blood culture using only conventional lab centrifuges.
View Article and Find Full Text PDFBiosens Bioelectron
December 2025
Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA. Electronic address:
Microfluidic devices with built-in microvalves hold particular promise for minimizing sample volume requirements while automating sample preparation workflows. Such devices have typically been implemented in polydimethyl siloxane (PDMS) using multi-layer soft lithography. Both the material and assembly process of devices present challenges for scalable manufacturing and limit utilization of microfluidic automation at the point of care.
View Article and Find Full Text PDFMicrosyst Nanoeng
August 2025
School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, 64849, Nuevo León, Mexico.
Biopolymer core-shell microspheres play a crucial role in various biomedical applications, including drug delivery, tissue engineering, and diagnostics. These applications require microparticles with consistent, well-controlled size and precise shape fidelity. However, achieving high-throughput synthesis of size and shape-controlled core-shell biopolymer microgels remains a significant challenge.
View Article and Find Full Text PDFBiosensors (Basel)
August 2025
Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
Microneedles represent an emerging transdermal drug delivery platform offering painless, minimally invasive penetration of the stratum corneum. This study addresses limitations of conventional lidocaine hydrochloride formulations, such as slow onset and poor patient compliance, by developing lidocaine hydrochloride-loaded dissolvable microneedles (LH-DMNs) for rapid local anesthesia. LH-DMNs were fabricated via centrifugal casting using polyvinyl alcohol (PVA) as the matrix material in polydimethylsiloxane (PDMS) negative molds, which imparts high mechanical strength to the microneedles.
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