Related Experiment Video
Updated: Feb 7, 2026

08:57
Focussed Ion Beam Milling and Scanning Electron Microscopy of Brain Tissue
Published on: July 6, 2011
28.8K
A fast imaging method of scanning ion conductance microscopy
1Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Institute of Automation, Jiangnan University, Wuxi 214122, Jiangsu, China.
Summary
This study introduces a fast Scanning Ion Conductance Microscopy (SICM) method using compressive sampling and a novel algorithm for quicker, high-definition imaging of biological samples like viruses and cells.
Area of Science:
- Biophysics
- Microscopy
- Image Reconstruction
Background:
- Scanning Ion Conductance Microscopy (SICM) offers noninvasive, high-resolution imaging.
- Improving SICM imaging speed is crucial for dynamic biological studies.
- Current methods face limitations in achieving rapid imaging rates.
Purpose of the Study:
- To develop a faster SICM imaging method.
- To enhance imaging efficiency for biological samples.
- To enable rapid and high-resolution visualization in microscopy.
Main Methods:
- Implemented a compressive sampling strategy for SICM.
- Utilized the 2D normalized iterative hard thresholding (2D-NIHT) algorithm for signal reconstruction.
- Validated the method through simulations and imaging of biological samples (virus, living cell).
Main Results:
- Achieved high-definition imaging of sample surface topography.
- Demonstrated a significant reduction in imaging time compared to conventional methods.
- The 2D-NIHT algorithm showed superior reconstruction performance.
Conclusions:
- The proposed fast SICM method significantly improves imaging efficiency.
- This technique allows for faster, high-resolution imaging of biological specimens.
- Offers a generalizable approach for scanning probe microscopy applications.
Related Concept Videos
Scanning Electron Microscopy
5.5K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Fundamental Principles
Accelerated...
5.5K
Common Ion Effect
46.9K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
46.9K
Precipitation of Ions
30.3K
Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
30.3K
Ion Channels
91.5K
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
91.5K
Leaky Scanning
5.7K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.7K
Formation of Complex Ions
26.2K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.2K

