Results 11 to 20 of about 87,269 (310)

Micromotor-based lab-on-chip immunoassays [PDF]

Nanoscale, 2013
Here we describe the first example of using self-propelled antibody-functionalized synthetic catalytic microengines for capturing and transporting target proteins between the different reservoirs of a lab-on-a-chip (LOC) device. A new catalytic polymer/Ni/Pt microtube engine, containing carboxy moieties on its mixed poly(3,4-ethylenedioxythiophene ...
García, Miguel, Orozco, Jahir, Guix, Maria, Gao, Wei, Sattayasamitsathit, Sirilak, Escarpa, Alberto, Merkoçi, Arben, Wang, Joseph   +7 more
openaire   +5 more sources

Artificial Intelligence-Aided Low Cost and Flexible Graphene Oxide-Based Paper Sensor for Ultraviolet and Sunlight Monitoring

Nanoscale Research Letters, 2022
The adverse effect of ultraviolet (UV) radiation on human beings has sparked intense interest in the development of new sensors to effectively monitor UV and solar exposure.
Ahmed Abusultan, Heba Abunahla, Yasmin Halawani, Baker Mohammad, Nahla Alamoodi, Anas Alazzam   +5 more
doaj   +1 more source

Facile synthesis of graphene oxide/Fe3O4 nanocomposite for electrochemical sensing on determination of dopamine

Nanocomposites, 2022
Dopamine concentration abnormalities in the body can cause various disorders and diseases such as Parkinson's, Tourette's syndrome, and depression. In this study, graphene oxide (GO) was combined with Fe3O4 to sensitively and selectively detect dopamine.
Isa Anshori, Komang Arya Attyla Kepakisan, Lavita Nuraviana Rizalputri, Raih Rona Althof, Antonius Eko Nugroho, Rikson Siburian, Murni Handayani   +6 more
doaj   +1 more source

NeuriTES. Monitoring neurite changes through transfer entropy and semantic segmentation in bright-field time-lapse microscopy

Patterns, 2021
Summary: One of the most challenging frontiers in biological systems understanding is fluorescent label-free imaging. We present here the NeuriTES platform that revisits the standard paradigms of video analysis to detect unlabeled objects and adapt to ...
Arianna Mencattini, Alida Spalloni, Paola Casti, Maria Colomba Comes, Davide Di Giuseppe, Gianni Antonelli, Michele D'Orazio, Joanna Filippi, Francesca Corsi, Hervé Isambert, Corrado Di Natale, Patrizia Longone, Eugenio Martinelli   +12 more
doaj   +1 more source

Determining the antioxidant properties of various beverages using staircase voltammetry

Heliyon, 2020
Antioxidants are molecules that neutralize reactive oxygen species in the human body, reportedly reducing the risk of cancer and cardiovascular diseases. With multiple dietary products being advertised by their assumed high antioxidant concentration, the
W.H. Schilder, E. Tanumihardja, A.M. Leferink, A. van den Berg, W. Olthuis   +4 more
doaj   +1 more source

Functionalized multi-walled carbon nanotube/silver nanoparticle (f-MWCNT/AgNP) nanocomposites as non-enzymatic electrochemical biosensors for dopamine detection

Nanocomposites, 2021
Dopamine (DA) is an important neurotransmitter in the kidney, cardiovascular system, and central nervous system, which abnormality is associated with many diseases.
Isa Anshori, Lavita Nuraviana Rizalputri, Raih Rona Althof, Steven Sean Surjadi, Suksmandhira Harimurti, Gilang Gumilar, Brian Yuliarto, Murni Handayani   +7 more
doaj   +1 more source

Tunable Switching Behavior of GO-Based Memristors Using Thermal Reduction

Nanomaterials, 2022
This work reports on the fabrication of a novel planar reduced graphene oxide (rGO) memristor (MR) device. For the first time in the literature, the MR tunable resistive switching behavior is controlled by the GO reduction time at a constant temperature.
Muayad Abujabal, Heba Abunahla, Baker Mohammad, Anas Alazzam   +3 more
doaj   +1 more source

Patterning Biological Gels for 3D Cell Culture inside Microfluidic Devices by Local Surface Modification through Laminar Flow Patterning

Micromachines, 2020
Microfluidic devices are used extensively in the development of new in vitro cell culture models like organs-on-chips. A typical feature of such devices is the patterning of biological hydrogels to offer cultured cells and tissues a controlled three ...
Joshua Loessberg-Zahl, Jelle Beumer, Albert van den Berg, Jan C. T. Eijkel, Andries D. van der Meer   +4 more
doaj   +1 more source

Droplet microreactor for high-throughput fluorescence-based measurements of single catalyst particle acidity

Microsystems & Nanoengineering, 2023
The particles of heterogeneous catalysts differ greatly in size, morphology, and most importantly, in activity. Studying these catalyst particles in batch typically results in ensemble averages, without any information at the level of individual catalyst
Jeroen C. Vollenbroek, Anne-Eva Nieuwelink, Johan G. Bomer, Roald M. Tiggelaar, Albert van den Berg, Bert M. Weckhuysen, Mathieu Odijk   +6 more
doaj   +1 more source

Lab-on-chip systems for integrated bioanalyses [PDF]

Essays in Biochemistry, 2016
Biomolecular detection systems based on microfluidics are often called lab-on-chip systems. To fully benefit from the miniaturization resulting from microfluidics, one aims to develop ‘from sample-to-answer’ analytical systems, in which the input is a raw or minimally processed biological, food/feed or environmental sample and the output is a ...
Conde, João Pedro, Madaboosi, Narayanan, Soares, Ruben R.G., Fernandes, João Tiago S., Novo, Pedro, Moulas, Geraud, Chu, Virginia   +6 more
openaire   +2 more sources