Ion Optical Elements
Ion Optical Elements - Related Videos
02:54
Classification of Elements and Compounds
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2020
Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units. Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
11:45
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Cited by 19 •
2017
This paper presents a microfabrication methodology for surface ion traps, as well as a detailed experimental procedure for trapping ytterbium ions in a room-temperature environment.
03:27
Ions and Ionic Charges
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2020
In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element — remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons to form electrically charged particles called ions. When...
04:00
Periodic Classification of the Elements
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2020
The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
09:39
Optical Biosensing
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2023
Optical biosensors utilize light to detect the binding of a target molecule. These sensors can utilize a label molecule, which produces a measurable signal such as fluorescence, or these sensors can be label-free and use the changes in optical properties, such as refractive index, to sense for the binding of the target molecule. This video introduces both label and label-free optical biosensors, demonstrates their use in the laboratory, and shows some applications of the technology.
FAQs
Electrostatic elements primarily use electric fields to accelerate, focus, or redirect ions, while magnetic fields also control trajectories and can support separation based on ion behavior. In an instrument, these functions may be combined so ions are transported efficiently while their energies, directions, or spatial distribution are adjusted for subsequent analysis.
An ion’s charge affects how strongly it responds to an applied electric or magnetic field, while its kinetic energy influences how readily its path can be changed. These properties determine whether an ion is focused, steered, accelerated, or transmitted efficiently. Matching field conditions to the ion beam therefore helps reduce unwanted losses during analysis.
Their design creates a balance between guiding ions efficiently and controlling them precisely. Limiting beam divergence can improve transport and reduce ion loss, whereas selective control of ion trajectories or mass-to-charge ratio can support higher mass resolution. Because fewer ions may be lost before detection, appropriate design can also improve sensitivity and measurement reliability.
After ion formation, the beam is transferred through a series of optical components that can accelerate, focus, steer, or filter the ions. Ion guides and lenses help maintain a useful trajectory, deflectors redirect the beam when needed, and mass-selective elements limit transmission according to mass-to-charge ratio. This staged control prepares ions for chemical measurement.
They are especially important in mass spectrometry, where ions must travel from an ion source through the instrument before their signals can support molecular identification. The elements help preserve ion transmission and control beam behavior during this path. Their performance consequently affects how reliably a chemical system can distinguish and measure ionic species.
Changes in transmission, beam divergence, mass resolution, sensitivity, or ion loss provide evidence about how effectively the optical arrangement is handling the beam. Comparing these outcomes helps assess whether ions are being transported and filtered as intended. In chemistry, that assessment is relevant to the reliability of measurements used for molecular identification and chemical analysis.