The Balogun Research Group has more than 1200 ft2 of laboratory space equipped with facilities for high resolution optical imaging, ultrasonic and thermal imaging, and nondestructive materials characterization. These tools include,


Frequency Domain Photoacoustic Microscope

Apertureless Near-field Optical Microscope

  • 2 GHz frequency domain photoacoustic microscope;
  • Laser ultrasonic setup (bandwidth < 200 MHz)
  • Displacement and velocity Michelson interferometers
  • Innova IRIS Integrated AFM and Raman microscope
  • Apertureless near-field optical microscope
  • Time domain thermoreflectance setup (in Professor Krishnaswamy’s laboratory)
  • High Frequency (4 GHz) RF signal generators, RF lock-in amplifier, network analyzers, and 5 GHz Lecroy digital oscilloscope
  • Laser sources: Intensity modulated Erbium doped fiber laser (1550 nm), Neodymium yttrium aluminum garnet (Nd:YAG) pulsed laser (1064 nm, pulse width = 1ns, pulse repetition frequency =1kHz, peak energy per pulse = 1mJ), Nd:YAG continuous wave lasers, (532 nm, peak power = 200mW)
  • High Speed photo-detectors for IR and visible wavelengths (Bandwidth:1 GHz), avalanche photo-detector (Bandwidth = 50 MHz and 5MHz -1GHz)
  • Polygon scanning mirror assembly

The group also has access to shared instruments at the Northwestern University’s Atomic and Nanoscale Characterization Experimental Center (NUANCE), Argonne National Laboratory Center for Nanoscale Materials (CNM), and the Northwestern University Cleanroom.

Facilities at Northwestern University’s NUANCE

  • Scanning electron microscope:S3400N-II SEM, FEI Quanta ESEM
  • Focused Ion beam: FEI Helios Nanolab SEM/FIB

Facilities at Argonne National Laboratory CNM

  • Electron beam lithography system: JEOL 9300
  • Focused Ion beam: FEI Nova 600 Nanolab
  • Sputter deposition system: Emmitech K675X
  • Thermal/PECVD system for CNT and Graphene synthesis
  • Oxford Plasmalab 100 Inductively coupled plasma enhanced chemical vapor deposition

Facilities at Northwestern University

  • Electron beam deposition: Edwards Auto 500 FL400 e-beam evaporator
  • Thorlabs Ganymede 930nm spectral domain optical coherence tomography system