Overview
Nanofinder®FLEX is fiber type confocal Raman microspectroscopy system with high sensitivity, high 3D-spatial resolution. This system allows users to take Raman mapping images with sub-micrometer resolution within short time. Each module (excitation laser, Raman optical unit, spectrometer) are coupled with optical fibers that make system layout flexible and compact. Typically the system comes with an up-right microscope. Piezo-stage or (and) step-motor scanners are available for fast sample mapping/positioning.
“Line Scan option” – Safe measurement for sensitive samples
・Focusing laser beam in line to decrease power density and prevent sample damage.
・Simultaneous collection of Raman spectra from many points along the laser line.
・Easy switching between traditional Point Scan and innovative Line Scan modes with integrated slider.
※Available for:Nanofinder®FLEX2 ・Nanofinder®FLEX(soon)
Application example: Li-Ion batteries
Raman intensity image of LiCoO2 (red ) and
Carbon (blue) distribution in X-Y plane
LiCoO2 and Carbon spectra , averaged (1x1µm)
Raman intensity image of LiCoO2 (red) and Carbon (blue ) distribution in X-Z plane
Laser power on sample: 1.7 mW
Number of spectra: ~21,000
Mapping time: ~20 min
Sample courtesy of Kanamura Laboratory,
Faculty of Urban Environmental Sciences,
Tokyo Metropolitan University.
“Large Area Scan option” – Fast mapping of big samples
・Raman mapping with step motor stage of millimeter, centimeter or even larger scanning area.
・Fast scan by synchronized constant speed sample movement and data collection.
・Easy switching between point scan and fast scan.
・Combinable with “Line Scan” option.
※Stepping motor stage is required for this scan option.
Application example 1: Large test grid
Size: 27.5 mm X 3.85 mm
Number of spectra: 218,827 (2,751x77)
Mapping time: ~25 min (~7.2 ms/point)
Application example 2: Pharmaceutical tablet
Raman intensity Image of
Aspirin (blue) and Paracetamol (red)
distribution.
Aspirin and Paracetamol spectra,
40xNA0.6, exposure 1 min
Size: 7.75 mm X 7.75 mm
Number of spectra: 24,025 (155x155)
Mapping time: 50 min (~125 ms/point)
| System configuration | Upright microscope |
| Raman optical unit | |
| Imaging spectrometer | |
| Cooled CCD detector | |
| Piezo stage (XYZ) | |
| Excitation laser | |
| Controller/software/23 inch LCD | |
| Spatial resolution | XY <300 nm, Z <900 nm |
| Sensitivity | High sensitivity measurement of 4th-order Si Raman peak within 1 min/point(488 nm/5 mW) |
Each unit specification
| Raman optical unit | One excitation laser is available(Unit exchange depending on lasers) FC connector coupling between spectrometer and laser |
Imaging spectrometer MS3504i
| Coupling fiber | SUS sleeve Φ10×60 mm |
| Focal length | 35 cm, F/3.8 |
| Reciprocal linear dispersion | 2.37 nm/mm@1200 G/mm |
| Wavelength resolution | 0.06 nm@550 nm, 1200 G/mm |
| Wavenumber resolution | 2 cm-1@550 nm, 1200 G/mm |
| Maximum gratings | 4 |
Cooled CCD detector (DU401A-BV, DU401A-BRDD)
| Elements | 1024×127 |
| Element size | 26×26 μm2 |
| Image area | 26.6×3.3 mm |
| Maximum cooling temperature | －100 ℃(water), －80 ℃(air) |
Piezo stage (Closed loop)
| X-Y-Z stroke | 100 μm |
| Resolution | 5 nm |
| Repetition accuracy | ±5 nm |
| Built-in sensor | capacitive sensor |
Excitation laser
| Common specification | fiber output, FC connector coupling fiber length 2m continuous variable power |
| DPSS laser | Wavelength: 532 nm Power : 25 mW (@fiber exit) |
| LD laser | Wavelength：785 nm Power : 40 mW(@fiber exit) |
| Others | 473 nm, 488 nm, 514 nm, 633 nm, 671 nm etc. Pulse laser(for FLIM) available |
| Control/analysis software : Nanofinder®software |
Mapping control |
| Data acquisition/save | |
| Display of Raman/fluorescence spectrum | |
| Spectrometer calibration | |
| 2D/3D imaging, slice at arbitrary cross-section | |
| Spectrum/image analysis | |
| Spectral peak fitting | |
| Deconvolution | |
| Installation space | Microscope and Raman optical unit 600(W)×700(H)×850(D) mm (Including spectrometer/CCD, piezo stage, controller） |
| Power consumption | 1200 W, 100 V |
| Options | cryostat, heating stage, electrochemical cell, TCSPC board, spectrum database etc. |
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