Method of decomposing target and decomposition apparatus
AssigneeGenesis Research Institute, Inc.
InventorsYoshihiro Takeda, Fumitaka Mafune, Tamotsu Kondou
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Abstract
It is intended to provide a method whereby a target to be analyzed can be easily decomposed in a micro region and a decomposition apparatus. In the decomposition method of decomposing the target to be analyzed and the decomposition apparatus, the target is allowed to coexist with a microparticle and then the microparticle is put into the high-energy state. Then, the target located in the vicinity of the surface of the microparticle is decomposed due to the energy transfer from the high-energy microparticle toward the target. Thus, the target can be easily decomposed in a micro region.
Claims4
A method of decomposing a target, wherein the target which is a subject of decomposition is decomposed, the method comprising:
- making the target and metal microparticles coexist and putting the metal microparticles into a high-energy state by application of a laser, the making comprising
- making the target exist in the vicinity of the surface of the metal microparticles by adjusting a pH of a solution containing the target and the metal microparticles, or by changing an ionic state of the target in the solution or of the metal microparticles in the solution such that the target exists in the vicinity of the metal microparticles while non-target in the solution does not exist in the vicinity of the metal microparticles,
- wherein the laser is focused into a region with a volume within a range from approximately 1 μm3 to approximately 1 mm3, and the laser is a pulse laser having a laser intensity in a range from approximately 100 μJ/pulse to approximately 100 mJ/pulse;
- and
- decomposing the target existing in the vicinity of the surface of the metal microparticles by energy transfer from the metal microparticles put into the high-energy state to the target, wherein the target existing in a region no more than approximately 100 nm from the surface of the metal microparticles is decomposed.
A decomposition apparatus for decomposing a target, wherein the target is a subject of decomposition, the apparatus comprising:
- a receiving section used to make the target and metal microparticles coexist;
- an energy supply device for putting the metal microparticles into a high-energy state;
- and
- a solution in the receiving section, the solution containing the target and the metal microparticles, wherein:
- a pH of the solution containing the target and the metal microparticles is adjusted or an ionic state of the target or of the metal microparticles is adjusted to make the target exist in the vicinity of the surface of the metal microparticles, and
- the target existing in a region no more than approximately 100 nm from the surface of the metal microparticles is decomposed by energy transfer from the metal microparticles put into the high-energy state by application of a laser to the target, wherein the laser is focused into a region with a volume within a range from approximately 1 μm3 to approximately 1 mm3, and the laser is a pulse laser having a laser intensity in a range from approximately 100 μJ/pulse to approximately 100 mJ/pulse.
Dependencies are inferred from the claim text.