Bio-contaminated Surfaces
Bio-contaminated Surfaces - Related Videos
08:49
Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Cited by 4 •
2017
This article summarizes the design attributes and the effectiveness of treatment systems that treat urban stormwater and agriculture irrigation runoff to remove pesticides and other contaminants associated with aquatic toxicity.
07:58
Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles
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Cited by 5 •
2018
A facile protocol is presented to functionalize the surfaces of nanodiamonds with polydopamine.
16:38
Bridging the Bio-Electronic Interface with Biofabrication
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Cited by 3 •
2012
This article describes a biofabrication approach: deposition of stimuli-responsive polysaccharides in the presence of biased electrodes to create biocompatible films which can be functionalized with cells or proteins. We demonstrate a bench-top strategy for the generation of the films as well as their basic uses for creating interactive biofunctionalized surfaces for lab-on-a-chip applications.
05:25
Patterning of Embryonic Stem Cells Using the Bio Flip Chip
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Cited by 2 •
2007
We demonstrate a simple method for placing cells at desired locations on a substrate. This method patterns cells by flipping a silicone chip containing microwells filled with cells onto the substrate. This method provides a new way to modulate diffusible and juxtacrine signaling between cells.
08:13
A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants
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Cited by 8 •
2016
A procedure for fabrication and performing the filter-based surface enhanced Raman spectroscopic (SERS) assay for the detection of chemical contaminants (i.e., pesticide ferbam and antibiotic ampicillin) is presented.
FAQs
Droplets can deposit biological material unevenly, then spread or contract as fluid interacts with the surface. Their behavior depends on surface wettability, which describes how readily a liquid spreads, as well as evaporation and surrounding conditions. These processes influence the size, location, and persistence of deposited residues, helping researchers interpret contamination patterns and model subsequent movement.
Surface roughness and wettability alter how biological material contacts and remains on a material. Roughness can change the physical interface where residues adhere, while wettability affects whether deposited fluid spreads across the surface or remains more localized. Because these properties influence retention and movement, they are important variables when evaluating sampling, protective coatings, and cleaning strategies.
Evaporation changes deposited droplets after they reach a surface, potentially modifying fluid distribution and the remaining biological residue. Environmental conditions influence how quickly this transformation occurs, so measurements made immediately after deposition may differ from those made later. Accounting for evaporation improves physical models of contamination and helps researchers interpret how residues may persist or redistribute.
Contact transfer occurs when biological material moves between surfaces during physical interaction, whereas airflow can transport droplets or residues without direct surface contact. These mechanisms create different pathways for contamination movement and require different physical considerations. Studying both helps researchers model transport across laboratories, healthcare settings, and public environments, where touching and air movement may operate together.
Sampling designs should account for where droplets deposit, how fluids spread, and whether evaporation, adhesion, contact, or airflow may have altered the material. Surface roughness and wettability also affect the distribution of residues. Considering these variables can make measurements more representative of the physical contamination pattern and support more reliable comparisons among surfaces or environmental conditions.
Physical analysis identifies how biological material adheres, spreads, and transfers across a surface. Those observations can inform strategies that address both localized residues and material moved by contact or airflow. Surface properties and environmental conditions provide additional context for evaluating whether a cleaning or disinfection approach is suited to the contamination behavior observed in laboratories, healthcare settings, or public environments.
Protective coatings can be designed or evaluated in relation to wettability, roughness, adhesion, and fluid spreading. Sensors, meanwhile, can support detection or measurement of material deposited on a surface. Physics connects these applications by describing how droplets and residues interact with materials, helping researchers assess surface performance and develop more informative monitoring approaches.
Transport models organize the processes that move biological material, including droplet deposition, fluid spreading, evaporation, adhesion, contact, and airflow. They can help relate surface properties and environmental conditions to observed contamination patterns. In practice, such models support interpretation of measurements and guide research on sampling, coatings, cleaning, disinfection, and sensing across varied environments.