Electrospray is a technique used to produce a fine, electrically charged aerosol consisting of highly charged droplets, by applying a strong electric field via high voltage to a liquid flowing through a capillary. This method accelerates the development of surface treatments and functional materials. Key applications include Electrospray Ionization (ESI) for Liquid Chromatography-Mass Spectrometry (LC-MS), Electrostatic Atomization (EAS), and Electrostatic Precision Dispensing (EPD).
Furthermore, electrospray technology is integral to advanced research, such as Femto-reactor applications, enabling the rapid synthesis and development of new materials, compounds, and pharmaceuticals.
Technical Principle of Electrospray
The electrospray process begins when a high voltage creates a powerful electric field between the capillary tip and a counter electrode. This field pulls the liquid into a conical shape, known as the Taylor cone, from which highly charged droplets are emitted.
As these droplets travel through the air, the solvent evaporates, causing the droplets to shrink and the surface charge density to increase. This eventually leads to "Coulombic explosions," resulting in the production of gas-phase ions. This mechanism makes electrospray an essential ionization source (ion source) for ESI sources used in mass spectrometry.
To maintain a stable spray and a consistent Taylor cone, precise control over flow rates and voltage stability is paramount. Any fluctuation in the power supply can disrupt the ionization process, which is why ultra-stable high-voltage power supplies are critical for high-resolution analysis.
Stable high-voltage output is critical for maintaining a consistent Taylor cone and ensuring uniform droplet size in these processes. For ESI analysis, which typically requires 2 kV to 5 kV, and for demanding Femto-reactor applications, Matsusada Precision offers high-performance high-voltage power supplies. Our units are engineered to deliver the low ripple and high stability necessary for precise, repeatable results.
Academic paper on electrospray, electrostatic inkjet featuring Matsusada Precision's high-voltage power supply
- Related Terms:
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- Electrospray Ionization (ESI)
- Mass Spectrometry (MS)
- Electrostatic Atomization System (EAS)
- Electrostatic Precision Dispensing (EPD)
