Related Experiment Video
Updated: Jan 28, 2026
10:16
A Protocol for Real-time 3D Single Particle Tracking
Published on: January 3, 2018
15.3K
Identifying Single Particles in Air Using a 3D-Integrated Solid-State Pore.
Makusu Tsutsui1, Kazumichi Yokota1,2, Takeshi Yoshida1
1The Institute of Scientific and Industrial Research , Osaka University , Mihogaoka 8-1 , Osaka , Ibaraki 567-0047 , Japan.
ACS Sensors
|February 22, 2019
Summary
This study introduces a novel all-electrical sensor using solid-state nanopores to identify airborne particles like pollen. Machine learning differentiates particle types, enabling real-time air quality monitoring.
Area of Science:
- Nanotechnology
- Environmental Science
- Analytical Chemistry
Background:
- Solid-state nanopores detect single particles in liquids via ionic current.
- Current methods for airborne particle identification can be complex and time-consuming.
Purpose of the Study:
- To adapt nanopore sensing technology for the identification of airborne particulate matter.
- To develop a real-time, single-particle analysis method for air quality monitoring.
Main Methods:
- Particles from air were captured and introduced into microfluidic channels.
- Electrophoretic forces controlled particle delivery into a nanopore detector.
- Resistive pulse measurements and machine learning were used for particle discrimination.
Main Results:
- Successfully discriminated between different types of airborne pollen (cypress and cedar) at the single-particle level.
- Demonstrated the feasibility of using nanopore sensing for airborne particle analysis.
- Achieved single-particle resolution for intragranular content analysis.
Conclusions:
- Solid-state nanopore technology offers a promising platform for real-time airborne particle identification.
- The all-electrical sensing approach simplifies particle analysis and monitoring.
- This technique has potential for future environmental and health-related air quality applications.
Related Concept Videos
01:27Calculation of Volume of Solids by Integration
88
Volume calculation often begins with simple geometric solids. For example, the volume of a rectangular box is obtained by multiplying the area of its base by its height. This straightforward approach relies on the fact that the cross-sectional area of the box remains constant throughout its length. Many real-world objects, however, do not have uniform cross-sections, and their volumes cannot be determined using elementary geometric formulas.To address this limitation, the Slicing Method...
88
02:22Structures of Solids
17.7K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.7K
02:37Metallic Solids
20.6K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.6K
01:10Angular Momentum: Single Particle
7.8K
Angular momentum is directed perpendicular to the plane of the rotation, and its magnitude depends on the choice of the origin. The perpendicular vector joining the linear momentum vector of an object to the origin is called the “lever arm.” If the lever arm and linear momentum are collinear, then the magnitude of the angular momentum is zero. Therefore, in this case, the object rotates about the origin such that it lies on the rim of the circumference defined by the lever arm...
7.8K
02:54Molecular and Ionic Solids
20.0K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.0K
01:20Principle of Linear Impulse and Momentum for a Single Particle
1.6K
Linear momentum is a fundamental concept in physics that describes the motion of an object. It is a vector quantity, having a magnitude equal to the product of its mass and its velocity, and direction along the object's velocity. On the other hand, linear impulse, also known as momentum impulse, is a concept in physics related to the change in the linear momentum of an object. Impulse is a vector quantity defined as the product of force and the time over which the force is applied.
Delving...
Delving...
1.6K