Argonne National Laboratory Center for Nanoscale Materials U.S. Department of Energy

Nanophotonics Group Capabilities

Transient absorption spectroscopy

  • Laser excitation: 250-1200 nm
  • Probe wavelength range: 300-1450 nm
  • Delay times <100 fs-0.1 ms

Time-resolved emission spectroscopy

  • Visible time-correlated single-photon counting (TCSPC)
    • 300- to 1000-nm detection
    • Time-resolved fluorescence
      • 200 ps-100 ms time window
      • 488-, 560-, 625-nm excitation
    • Time-resolved phosphorescence
      • 100 ms-10 s time window
      • 370-, 460-, 560-nm excitation
  • Near-infrared TCSPC
    • 300-ps temporal resolution
    • 405- to 705-nm excitation
    • 800- to 1650-nm detection
  • Spectrally resolved streak camera
    • Hamamatsu detector, 300-950 nm
    • 3-ps temporal resolution; 110-ps to 50-ns time window
    • 400-nm-wide spectral window
  • TCSPC microscopy
    • 40-ps temporal resolution
    • Laser sources:
      • Tunable supercontinuum source
        • 390-1000 nm
        • 5-nm bandwidth, 6-ps pulsewidth
      • Ti:Sapphire oscillator
        • 15-fs pulsewidth
        • Centered at 800 nm
      • Tunable Ti:Sapphire oscillator
        • 120-fs pulsewidth
        • 710- to 980-nm, 360- to 490-nm doubled output
      • Ti:Sapphire pumped OPO
        • 120-fs pulsewidth
        • 525-665 nm
      • Two-photon 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

Raman spectroscopy

  • Laser excitation:  325, 442, 514, 633, and 785 nm
  • Macro and micro sampling capability
  • Fully automated Raman area mapping:  <1-micron XY resolution
  • Fully integrated temperature-controlled stage: 77-875 K

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
  • UVO surface cleaner

Visible and near-infrared microscopy

  • Visible
    • Transmission and reflection illumination
    • Bright field and dark field microscopy/spectroscopy
    • 400- to 900-nm illumination/detection
    • Laser illumination
    • TE-cooled CCD array detector
    • Hyperspectral imaging with an electronically tunable optical filter
  • Near-infrared
    • Transmission illumination
    • Bright field microscopy/spectroscopy
    • 800- to 1600-nm illumination/detection
    • LN2-cooled InGaAs 2D array detector

Bench-top spectroscopies

  • UV/VIS: Cary-50 spectrophotometer
    • 190- to 1100-nm scan range
    • Variable temperature cell holder
    • Thin-film holder
    • Specular reflectance (30 degree) sample holder
  • FTIR: Thermo-Nicolet Fourier transform spectrometer
    • Near-infrared from 800 to 2300 nm
    • Mid-infrared from 2 to 20 microns
  • Emission: Horiba Jobin-Yvon Nanolog Spectrofluorimeter
    • 240-1800 nm excitation
    • UV-Vis-NIR detection
      • 300- to 900-nm PMT detector
      • 300- to 1000-nm LN­2-cooled CCD array detector
      • Integrating sphere for quantum yield measurements from films
      • Time-resolved fluorescence/phosphorescence (see time-resolved spectroscopy above)
    • Single-channel detection
      • 800- to 1550-nm LN2-cooled InGaAs array detector
      • 800- to 3000-nm PbS detector

Size-selected clusters and cluster-based nanomaterials

  • Atomic precision synthesis in molecular beams, and deposition of size- and composition-selected subnanometer 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.

More Nanophotonics Information

 

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