摘要:
The present invention provides an improved method for imaging mass spectrometry using an ionization-assisting matrix of a test sample, wherein the ionization efficiency is high, migration and visual information reduction are inhibited, no interference peaks originating from the matrix occur, and the analysis can be performed at high spatial resolution.Specifically, the present invention provides a method for imaging mass spectrometry using a sample prepared by physical vapor depositing platinum nanoparticles on the surface of a test sample to be subjected to imaging mass spectrometry.
摘要:
The present invention provides an improved method for imaging mass spectrometry using an ionization-assisting matrix of a test sample, wherein the ionization efficiency is high, migration and visual information reduction are inhibited, no interference peaks originating from the matrix occur, and the analysis can be performed at high spatial resolution.Specifically, the present invention provides a method for imaging mass spectrometry using a sample prepared by physical vapor depositing platinum nanoparticles on the surface of a test sample to be subjected to imaging mass spectrometry.
摘要:
To achieve soft ionization more easily when a slight amount of substance is ionized under an atmosphere pressure. An ionization method for a substance contained in a liquid, including: supplying the liquid to a substrate from a probe and forming a liquid bridge made of the liquid containing the substance dissolved therein, between the probe and the substrate; oscillating the probe; and generating an electric field between an electrically conductive portion of the probe in contact with the liquid and an ion extraction electrode.
摘要:
To achieve soft ionization more easily when a slight amount of substance is ionized under an atmosphere pressure. An ionization method for a substance contained in a liquid, including: supplying the liquid to a substrate from a probe and forming a liquid bridge made of the liquid containing the substance dissolved therein, between the probe and the substrate; oscillating the probe; and generating an electric field between an electrically conductive portion of the probe in contact with the liquid and an ion extraction electrode.
摘要:
An object of the present invention is to provide copper nanoparticles that suppress the oxidation of copper, have an average particle diameter of 10 nm or less and therefore undergo a remarkable reduction in the melting point, are highly dispersible, can be sintered at a low temperature, allow the removal of the protective layer during low-temperature sintering at 150° C. or less, and can be suitably used as a conductive copper nanoink material; and to also provide a method for preserving copper nanoparticles, whereby the copper nanoparticles can be stably preserved at room temperature for a long period of time, and can be transported.The present invention provides copper nanoparticles each having a central portion comprising a copper single crystal, and a protective layer surrounding the central portion; (1) the copper nanoparticles having an average particle diameter of 10 nm or less; (2) the protective layer containing at least one member selected from the group consisting of C3-6 primary alcohols, C3-6 secondary alcohols, and derivatives thereof; and (3) the protective layer having a boiling point or thermal decomposition point of 150° C. or less.
摘要:
The present invention has an object to achieve soft ionization more easily when a slight amount of substance is ionized under an atmosphere pressure. The present invention provides an ionization method for a substance contained in a liquid, including: supplying the liquid to a substrate from a probe and forming a liquid bridge made of the liquid containing the substance dissolved therein, between the probe and the substrate; oscillating the substrate; and generating an electric field between an electrically conductive portion of the probe in contact with the liquid and an ion extraction electrode.
摘要:
An object of the present invention is to provide copper nanoparticles that suppress the oxidation of copper, have an average particle diameter of 10 nm or less and therefore undergo a remarkable reduction in the melting point, are highly dispersible, can be sintered at a low temperature, allow the removal of the protective layer during low-temperature sintering at 150° C. or less, and can be suitably used as a conductive copper nanoink material; and to also provide a method for preserving copper nanoparticles, whereby the copper nanoparticles can be stably preserved at room temperature for a long period of time, and can be transported.The present invention provides copper nanoparticles each having a central portion comprising a copper single crystal, and a protective layer surrounding the central portion; (1) the copper nanoparticles having an average particle diameter of 10 nm or less; (2) the protective layer containing at least one member selected from the group consisting of C3-6 primary alcohols, C3-6 secondary alcohols, and derivatives thereof; and (3) the protective layer having a boiling point or thermal decomposition point of 150° C. or less.
摘要:
The present invention has an object to achieve soft ionization more easily when a slight amount of substance is ionized under an atmosphere pressure. The present invention provides an ionization method for a substance contained in a liquid, including: supplying the liquid to a substrate from a probe and forming a liquid bridge made of the liquid containing the substance dissolved therein, between the probe and the substrate; oscillating the substrate; and generating an electric field between an electrically conductive portion of the probe in contact with the liquid and an ion extraction electrode.