Lab Instruments available 

Lab Instruments

Dr. Roy’s research includes optoelectronics and photovoltaics (solar cell) devices, high capacity energy storage devices, polymers and composites, bio-based polymers, biocompatible nanofibers for tissue regeneration, scaffold and antibacterial applications, bio-degradable metallic implants, dilute magnetic semiconductors, ferromagnetic materials and multiferroic materials for sensor and data storage applications

1. Spin Coater

The apex Spin Coater is compact and packed with advanced features. This coater system will accommodate up to ø150mm wafers and 5" × 5" (127mm × 127mm) substrates, and features a maximum rotational speed of RPM (based on a ø100mm silicon wafer).

Applications:

• Solar cells based on organic/inorganic materials

• Thin films of dilute magnetic semiconductors

• Coating of thin films of optoelectronic materials

• Photoresist for defining patterns in microcircuit fabrication.

• Dielectric/insulating layers for microcircuit fabrication

• Flat screen display coatings. - Antireflection coatings, conductive oxide, etc.

2. Potentiostat/Galvanostate

The Metrohm high-speed digital to analog converter circuitry, providing instantaneous step changes and pulses to generate the most complex potentiostatic / galvanostatic waveforms. Three high-speed, (500k samples / second) analog to digital converters provide fully synchronized measurements of the cell voltage, cell current and auxiliary voltage input.

The units provide 4-terminal cell connections, which allows great flexibility for the analysis of both high and low impedance cells. In low impedance applications, errors due to cell connection cable impedance may adversely affect the accuracy of results. The use of 4-terminal connections, allows the cell voltage to be measured at the cell terminals, minimizing errors due to cable impedance. The Metrohm provide an optional built-in frequency response analyzer (FRA) that is able to characterize a wide range of electrochemical cells. The FRA is fully integrated into the system allowing high speed switching between DC and EIS measurements.

Applications:

• Corrosion Research

• Battery, Fuel Cell and Supercapacitor Research  

• Research electrochemistry

• Sensors

• Biomedical applications

3. Semiconductor Characterization System

The total system solution for electrical characterization of devices, materials and semiconductor processes. This advanced parameter analyzer provides intuitive and sophisticated capabilities for semiconductor device characterization by combining unprecedented measurement sensitivity and accuracy with an embedded Windows-based operating system and the Keithley Interactive Test Environment. It is a powerful single box solution. To get a complete picture of any device or material, three fundamental electrical measurement techniques are required. The system offers all three.

• Precision DC Current-Voltage (I-V) measurements are the foundation of a full characterization plan.

• AC Impedance, including the well known Capacitance-Voltage (C-V) technique, provides information beyond what DC alone can provide.

• Pulsed and transient testing adds a time domain dimension and allows for dynamic characteristics to be explored.

Applications:

• Solar cells

• Sensors

• Electrical characterization of nano-devices

• Optoelectronic devices

• Pulsed electrical characterization

4. Solar Simulator

The lamp housing provides a temperature controlled environment to run the lamp efficiently and holds the condensing optics and rear reflector to collect the lamp radiation. You can power the supply on and off, set the current/power preset and limit, and monitor the current, voltage, power, and operating hours.

Applications:

• Solar cells

• Optoelectronic devices

• Photo-sensors

5. High Energy Probe Ultrasonication

The ultrasonicator is the most technologically advanced sonicator available today.  A state-of-the-art touch screen interface offers intuitive control and provides a user-friendly experience.  The most important feature of a Sonicator is reproducibility. Improved internal circuitry guarantees more efficient operation, sample-to-sample consistency and most importantly, a reliable end result.   This enables greater control of the probe’s intensity, helping to pinpoint the optimum settings for efficient sample processing.

Applications: 

• Preparation of nanostructured materials 

• Dispersion of graphene based materials

• Cell Disruption

• Nanoparticle Dispersion

• Creating Emulsions

6. High Speed Centrifuge

The centrifuge is designed for maximum productivity and high speed up to 15,000 rpm. Class leading acceleration and deceleration rates deliver additional time savings. This is engineered for maximum sample protection. Unlike other centrifuges that require high-maintenance vacuum systems to achieve speed, the Sorvall spins samples at atmospheric pressure, without the need for a vacuum. This superior design minimizes maintenance and helps prevent sample leakage, rotor imbalance and run shut-downs.

 Applications:

• Purification and separation of graphene

• Purification and separation of nanostructured materials 

Central Facilities at PSU

• Nuclear Magnetic Resonance (NMR) spectroscope

• X-Ray Diffractometer (XRD)

• Scanning Electron Microscope (SEM)

• Sputtering System

• Atomic Absorption Spectrometer

• Raman Spectroscopy

• Atomic Absorption Spectrometer

• Raman Spectroscopy

• FT-IR

• Thermal analysis (TG, DSC, DMA)