Nanophotonics Capabilities
Ultrafast Transient-Absorption Spectroscopy
- 230- to 2700-nm laser excitation
- 300- to 1550-nm probe wavelength range
- Delay times <100 fs-0.1 ms
- Pump1-pump2-probe capabilities
Time-Resolved Emission Spectroscopy and Microscopy
- Visible time-correlated single-photon counting
- 30-ps temporal resolution
- Two laser sources:
- Supercontinuum ultrafast laser source for tunable excitation
- Ti:Sapphire oscillator with 15-fs laser pulses centered at 800 nm
- Microscopy with diffraction limited spatial resolution
- Near-infrared time-correlated single-photon counting
- 300-ps temporal resolution
- 405- and 705-nm excitation
- 800- to 1650-nm detection
- Hamamatsu streak camera equipped with two photocathodes for broad spectral sensitivity covering 300-950 nm
- Temporal resolution down to 3 ps; 110-ps to 50-ns time window
- Transient spectra with up to a 400-nm-wide window
- Various visible and near-infrared array detectors and mid-infrared fluorescence
- Horiba Jobin-Yvon Nanolog Spectrofluorimeter for time-correlated single-photon counting
- 300- to 1000-nm detection
- Time-resolved fluorescence
- ~200-ps to 100-ms time window
- 488-, 560-, 625-nm excitation
- Time-resolved phosphorescence
- ~100-ms to 10-s time window
- 370-, 460-, 560-nm excitation
Sample-Handling Capabilities for Transient Absorption and Emission Spectroscopy
- Solution and thin-film sample handling with flow and raster scanning
- Temperature control from 2.6 to 800 K
- Sample pressurization via diamond anvil cells
- Oxygen-free and/or vacuum environments
Confocal Raman Microscopy
- 325-, 442-, 514-, 633-, 785-nm laser excitation
- Macro and micro sampling capability
- Fully automated Raman area mapping: <1-micron XY resolution
- Fully integrated temperature controlled stage: 77-875 K
Near-Field Scanning Optical Microscopy
- Dual scan heads
- Single micropositioning head
- Multiple configurations
- Collection mode
- Excitation mode
- Confocal mode
- Operates in transmission or reflection
- 400- to 900-nm laser excitation
Nanophotonics Nanoparticle Synthesis Laboratory
- Controlled synthesis of highly monodisperse colloidal nanoparticles
- Symmetric and asymmetric assembly of nanoparticles with multiple functionalities
- Engineering of surface chemistries of nanoparticles
Visible and Near-Infrared Microscopy
- Visible
- Transmission and reflection illumination
- Bright field and dark field microscopy and spectroscopy
- 400- to 900-nm illumination and detection
- TE-cooled CCD two-dimensional array detector
- Hyperspectral imaging with an electronically tunable optical filter
- Near-infrared
- Transmission illumination
- Bright field microscopy and spectroscopy
- 800- to 1600-nm illumination and detection
- Two-dimensional LN2-cooled InGaAs array detector
Varian Cary-50 UV/VIS Spectrophotometer
- 190- to 1100-nm scan range
- Variable-temperature cell holder
- Thi- film holder
Thermo-Nicolet Fourier-Transform Spectrometer
- Near-infrared from 800 to 2300 nm
- Mid-infrared from 2 to 20 mm
Horiba Jobin-Yvon Nanolog Spectrofluorimeter
- 240- to 1800-nm excitation
- Single-channel detection
- 300- to 1000-nm PMT detector
- 800- to 3000-nm PbS detector
- Two-dimensional emission spectroscopy (steady-state)
- 300- to 1000-nm LN2-cooled CCD array detector
- 800- to 1550-nm LN2-cooled InGaAs array detector
- 240- to 1800-nm excitation
- Integrating sphere for quantum yield measurements and for films
- 400- to 800-nm excitation
- 300- to 1000-nm detection
Size-Selected Clusters and Cluster-Based Nanomaterials
- Atomic precision synthesis in molecular beams and deposition of size- and composition selected sub-nanometer metal clusters (mass range 2000 amu)
- Tests of model catalysts under realistic reaction conditions of pressure and temperature (up to ~1.5 atm, ~400°C)
Note: Not all combinations of techniques are possible. Please contact a Nanophotonics Group staff member with any questions.
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