LabRAM Soleil Nano – TERS/nanoRaman

Real-time and Direct Correlative Nanoscopy including TERS

In TERS, the Raman excitation laser is focused at the tip of an SPM probe coated with either gold or silver . Matching the wavelength of the Raman laser to the natural surface plasmonic frequency of the noble metal generates an intense localized evanescent electromagnetic field or «hot spot» at the probe tip . The field extends only for a few nanometres from the tip  surface.
Since the intensity of the Raman spectra from the sample is proportional to the local electric field, bringing the hot spot close to the sample significantly enhances the Raman signal, often by a power of 10^5 or 10^6 .

Key Features

MULTI-SAMPLE ANALYSIS PLATFORM
Macro, micro and nano scale measurements can be performed on the same platform.
EASE OF USE
Fully automated operation, start measuring within minutes, not hours!
TRUE CONFOCALITY
High spatial resolution, automated mapping stages, full microscope visualization options.
HIGH COLLECTION EFFICIENCY
Top-down, oblique and bottom Raman detection for optimum resolution and throughput in both co-localized and tip-enhanced measurements.
HIGH SPECTRAL RESOLUTION
Ultimate spectral resolution performance, multiple gratings with automated switching, wide spectral range analysis for Raman and Photoluminescence.
HIGH SPATIAL RESOLUTION
Nanoscale spectroscopic resolution (down to 10 nm) through Tip-Enhanced Optical Spectroscopies (TERS: Tip-Enhanced Raman Spectroscopy and TEPL: Tip-Enhanced Photoluminescence).
MULTI-TECHNIQUE / MULTI-ENVIRONMENT
Numerous SPM modes including AFM, conductive and electrical modes (cAFM, KPFM), STM, liquid cell and electrochemical environment, together with chemical mapping through TERS/TEPL.
Full control of the two instruments through one workstation and a powerful software control, SPM and spectrometer can be operated simultaneously or independently.
ROBUSTNESS / STABILITY
High resonance frequency AFM scanners, operation far away from noises! High performance is obtained without active vibration isolation.

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Description

Real-time and Direct Correlative Nanoscopy including TERS and TEPL

Fully integrated system based on our OmegaScope scanning probe microscope and LabRAM Soleil Raman microscope. LabRAM Soleil Nano offers unprecedented capabilities for direct co-localised AFM-Raman and photoluminescence measurements. AFM imaging modes (topographic, electrical, mechanical, etc.) and Raman acquisition can be performed either sequentially or simultaneously at the same location of the sample surface. Optical nano-resolution is also achievable with Tip-Enhanced Raman Spectroscopy and Photoluminescence (TERS/ TEPL). LabRAM Soleil Nano is compatible with the environmental chamber for AFM and Raman measurements in controlled atmosphere and at low temperatures.

Specifications:

SmartSPM Scanner and Base

Sample scanning range: 100 µm x 100 µm x 15 µm (±10 %)

Scanning type by sample: XY non-linearity 0.05 %; Z non-linearity 0.05 %

Noise: 0.1 nm RMS in XY dimension in 200 Hz bandwidth with capacitance sensors on; 0.02 nm RMS in XY dimension in 100 Hz bandwidth with capacitance sensors off; < 0.04 nm RMS Z capacitance sensor in 1000 Hz bandwidth

Resonance frequency: XY: 7 kHz (unloaded); Z: 15 kHz (unloaded)

X, Y, Z movement: Digital closed loop control for X, Y, Z axes; Motorized Z approach range 18 mm

Sample size: Maximum 40 x 50 mm, 15 mm thickness

Sample positioning: Motorized sample positioning range 5 x 5 mm

Positioning resolution: 1 µm

AFM Head

Laser wavelength: 1300 nm, non-interfering with spectroscopic detector

Registration system noise: Down to < 0.1 nm

Alignment: Fully automated cantilever and photodiode alignment

Probe access: Free access to the probe for additional external manipulators and probes

SPM Measuring Modes

Contact AFM in air/(liquid optional); Semicontact AFM in air/(liquid optional); Non -contact AFM; Phase imaging; Lateral Force Microscopy (LFM); Force Modulation; Conductive AFM (optional); Magnetic Force Microscopy (MFM); Kelvin Probe (Surface Potential Microscopy, SKM, KPFM); Capacitance and Electric Force Microscopy (EFM); Force curve measurement; Piezo Response Force Microscopy (PFM); Nanolithography; Nanomanipulation; STM (optional); Photocurrent Mapping (optional); Volt-ampere characteristic measurements (optional)

Spectroscopy Modes

Confocal Raman, Fluorescence and Photoluminescence imaging and spectroscopy

Tip-Enhanced Raman Spectroscopy (TERS) & Tip-Enhanced Photoluminescence (TEPL)  in AFM, STM, and shear force modes

Near-field Optical Scanning Microscopy and Spectroscopy (NSOM/SNOM)

Options

  • Conductive Unit: Current range 100fA ÷ 10uA / 3 current ranges (1nA, 100nA and 10 µA) switchable from the software
  • Liquid Cell / Electrochemical Cell
  • Temperature control for liquid cell: Heating up to 60°C
  • Environmental Chamber
  • Humidity control system: Relative humidity range 10-85% / Relative humidity stability ±1%
  • Heating Cooling module: From -50°C to +100°C
  • Heating module: heating up to 300°C / Temperature stability 0.1°C, or heating up to 150°C / Temperature stability 0.01°C
  • Combined Shear-force and Normal force tuning fork holder
  • STM holder
  • Signal Access Module

Optical Access

Capability to use simultaneously top and side plan apochromat objective: Up to 100x, NA = 0.7 from top or side; Up to 20x and 100x simultaneously

Closed loop piezo objective scanner for ultra stable long term spectroscopic laser alignment: Range 20 µm x 20 µm x 15 µm; Resolution: 1 nm

Spectrometer

Wavelength range: UV-VIS-NIR; Broadband high throughput achromatic mirror-based system, optimized from 300 nm to 1600 nm without changing optics.

Built-in lasers: Up to 4 Solid-state lasers, NUV to NIR wavelengths available.

External lasers: Unlimited, for large gas and ultrafast lasers typically.

Spectrometer scanning speed: Up to 400 nm/s, with 600g/mm grating, mounted on standard 4-grating turret.

Number of gratings: unlimited; 4-grating exchangeable motorized turret.

Fast Imaging: <1ms/spectrum  SWIFT, SWIFT XS EMCCD, SWIFT repetitive, SWIFT eXtended Range and SmartSampling for ultrafast imaging.

Standard wavenumber cut-off: 30 cm-1, with edge filters for 532, 638 and 785 nm wavelengths, injection rejection, >99% transmission

Software

Integrated software package including full featured SPM, spectrometer and data acquisition control, spectroscopic and SPM data analysis and processing suite, including spectral fitting, deconvolution and filtering, optional modules include univariate and multivariate analysis suite (PCA, MCR, HCA, DCA), particle detection and spectral search functionalities.

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