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Related Concept Videos

Methods of Sterilization I: Physical Methods01:29

Methods of Sterilization I: Physical Methods

As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation.
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
Methods of Sterilization II: Chemical Methods01:30

Methods of Sterilization II: Chemical Methods

In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...

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Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
06:14

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Published on: September 11, 2018

High speed water sterilization using one-dimensional nanostructures.

David T Schoen1, Alia P Schoen, Liangbing Hu

  • 1Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA.

Nano Letters
|August 24, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel textile device for rapid electrical water sterilization. The innovative material design effectively inactivates over 98% of bacteria in seconds, offering a significant advancement in water purification technology.

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Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro
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Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro

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Area of Science:

  • Materials Science
  • Environmental Engineering
  • Biotechnology

Background:

  • Water purification is critical for public health and industrial processes, with biofouling posing a significant challenge.
  • Existing methods for removing microorganisms from water face limitations in speed and efficiency.

Purpose of the Study:

  • To develop a high-speed, efficient, and scalable method for electrical water sterilization.
  • To investigate the efficacy of a novel textile-based multiscale device for bacterial inactivation.

Main Methods:

  • Fabrication of a textile-based device using silver nanowires, carbon nanotubes, and cotton.
  • Implementation of a gravity-fed system for continuous water flow.
  • Application of an electrical sterilization mechanism leveraging nanoscale material properties.

Main Results:

  • The device achieved a flow rate of 100,000 L/(h m(2)).
  • Demonstrated inactivation of over 98% of bacteria within seconds of incubation.
  • The electrical mechanism proved more effective than size exclusion for bacterial removal.

Conclusions:

  • The textile-based multiscale device offers a highly effective and rapid solution for electrical water sterilization.
  • The combination of materials and electrical mechanism enables efficient bacterial inactivation at high flow rates.
  • This technology holds promise for diverse applications in drinking water, sanitation, and industrial water treatment.