Abstract: The invention relates to a system (1) for confocal Raman-spectroscopic measurements, comprising at least the following components: a sample chamber (10), wherein said sample chamber (10) is configured to house a sample (2) in a closed chamber volume (12) of the sample chamber (10), an excitation light source (3), an objective lens (4), configured to focus excitation light (32) of the excitation light source (3) through a ceiling portion (11) of the sample chamber (10) in a focal volume (31) in the chamber volume (12) and to collect inelastically scattered light (33) stemming from the focal volume (31), a confocal detection arrangement (20), comprising means for a confocal detection (22, 23) of a Raman signal comprised in the inelastically scattered light (33) from the focal volume (31), and a detector (21) that is configured to detect and to record said Raman signal, wherein the distance (5) between the ceiling portion (11) of the sample chamber (10) and the focal volume (31) is greater than one millim
Type:
Application
Filed:
December 15, 2016
Publication date:
June 22, 2017
Applicant:
rap.ID Particle Systems GMBH
Inventors:
Karsten GOEDE, Lothar HOLZ, Markus LANKERS, Oliver K. VALET
Abstract: Methods of fabricating and using a supporting substrate for the deposition, automated recognition and spectroscopic identification of particulate impurities in liquid or gaseous media are disclosed wherein the supporting substrate comprises a filter membrane of polymer materials of a defined pore width, wherein the surface of the filter membrane is coated with metal which in the selected wavelength range for spectroscopic identification has no spectral features and at the selected excitation wavelength absorbs no or only little of the laser energy which is radiated in, and has a very smooth structure.
Type:
Grant
Filed:
September 19, 2005
Date of Patent:
March 21, 2006
Assignee:
RAP.ID Particle Systems GmbH
Inventors:
Lothar Holz, Oliver Valet, Markus Lankers
Abstract: Methods of fabricating and using a supporting substrate for the deposition, automated recognition and spectroscopic identification of particulate impurities in liquid or gaseous media are disclosed wherein the supporting substrate comprises a filter membrane of polymer materials of a defined pore width, wherein the surface of the filter membrane is coated with metal which in the selected wavelength range for spectroscopic identification has no spectral features and at the selected excitation wavelength absorbs no or only little of the laser energy which is radiated in, and has a very smooth structure.
Type:
Application
Filed:
September 19, 2005
Publication date:
January 26, 2006
Applicant:
RAP.ID Particle Systems GmbH
Inventors:
Lothar Holz, Oliver Valet, Markus Lankers