Abstract: A joining layer of a joined body includes a joining material which contains, as a main component, a metal having a surface tension of 1000 mN/m or less at its melting point, and a metal layer which has a plurality of pores formed therein and in which at least some of the pores are impregnated with the joining material.

Abstract: A joined body includes a first member and a second member which are joined together via a joining portion including a metal layer having a plurality of pores communicating with each other. The first member and the metal layer have respective through holes formed in the first member and the metal layer, respectively, and communicating with each other. A tubular member is disposed between an inner side portion of the through hole formed in the metal layer and an interior portion of the metal layer.

Abstract: A joined body includes a first member, a second member, and a joining portion disposed therebetween and joining the first member and the second member. The joining portion includes a first joining layer on a side toward the first member and formed of a first joining material, a second joining layer on a side toward the second member and formed of a second joining material, and a metal layer therebetween and having a plurality of holes communicating with one another. The metal layer includes a first-joining-material-impregnated layer on a side toward the first joining layer and in which the plurality of holes are impregnated with the first joining material, a second-joining-material-impregnated layer on a side toward the second joining layer and in which the plurality of holes are impregnated with the second joining material, and an unfilled hole layer therebetween and in which the plurality of holes are void.

Abstract: A wavelength conversion member includes a ceramic fluorescent body for converting a wavelength of incident light, a heat radiation member for radiating heat of the ceramic fluorescent body to an outside atmosphere, and a solder layer for joining together the ceramic fluorescent body and the heat radiation member. The solder layer includes a joining portion disposed between the ceramic fluorescent body and the heat radiation member and a protruding portion protruding outward from an outer circumferential portion of the ceramic fluorescent body. The protruding portion is spaced apart from a side surface formed on the outer circumferential portion of the ceramic fluorescent body. In the solder layer, the maximum value of thickness of the protruding portion is greater than the average value of thickness of the joining portion.

Abstract: A wavelength conversion member includes a ceramic fluorescent body for converting a wavelength of incident light, a heat radiation member for radiating heat of the ceramic fluorescent body to an outside atmosphere, and a solder layer for joining together the ceramic fluorescent body and the heat radiation member. The solder layer includes a joining portion disposed between the ceramic fluorescent body and the heat radiation member and a protruding portion protruding outward from an outer circumferential portion of the ceramic fluorescent body. The protruding portion is spaced apart from a side surface formed on the outer circumferential portion of the ceramic fluorescent body. In the solder layer, the maximum value of thickness of the protruding portion is greater than the average value of thickness of the joining portion.

Abstract: A wavelength conversion member for soldering includes a ceramic fluorescent body for converting a wavelength of light entering from an incident surface of the ceramic fluorescent body, a reflection layer disposed on a back surface of the ceramic fluorescent body on a side opposite the incident surface and partially or entirely covering the back surface, and a junction layer composed of one or more films and covering at least the reflection layer selected from the back surface of the ceramic fluorescent body and the reflection layer. The junction layer has a projecting portion which projects, in relation to an outer circumferential portion of the junction layer, in a center portion of a surface on a side opposite a surface on a side where the junction layer covers at least the reflection layer selected from the back surface and the reflection layer.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.