Microscale Transport, Energy, and Device Lab   (M-TED)

Research Highlights:

Quantum-Mechanical Cooling of Semiconductor Devices

Reihani A., Li Z., Guan J., Luan Y., Yan S., Xue J., Meyhofer E., Reddy P., and Ram R.J.. Cooling of Semiconductor Devices via Quantum Tunneling. Physical Review Letters (2024) 

In-situ cross sectional scanning thermal microscopy on operating semiconductor devices enables nanometric-resolution maps of temperature 

Localized bias-dependent cooling at the tunnel junction has been observed experimentally and explained via quantum transport model

Nanokelvin-Resolution Photonic Thermometer

Reihani A, Meyhofer E, Reddy P. Nanokelvin-resolution thermometry with a photonic microscale sensor at room temperature. Nature Photonics, (2022)

Mighty mini-thermometer detects tiny temperature changes, Research Highlights, Nature, (2022) 

Several band edge thermometer sensors fabricated from a Gallium Arsenide wafer using microfabrication techniques

A suspended Band Edge Thermometer Sensor with a resolution of 60 nK/√Hz

The temperature resolution of Band Edge Thermometer ~60 nK  (black curve), compared to Platinum Resistance Thermometer ~40 µK  (blue curve).

Photonic Crystals for Nanokelvin-Resolution Thermometry

Shoghi Tekmedash, M., and Reihani, A. "Design of photonic crystals for nanokelvin-resolution thermometry." Sensors and Actuators A: Physical 379 (2024): 115949. 

Study of Thermal Transport on Microelectronics via Scanning Thermal Microscopy

Reihani A, Luan Y, Yan S, Lim JW, Meyhofer E, Reddy P.  Quantitative mapping of unmodulated temperature fields with nanometer resolution. ACS Nano, (2021)

Microfabricated Scanning Thermal Probe

Artifact-Free Temperature Mapping with Nanometric Resolution

Reaction Calorimetry of Nanomaterials for Hydrogen and Energy Storage

Reihani A, Lim JW, Fork DK, Meyhofer E, Reddy P. Microwatt-resolution calorimeter for studying the reaction thermodynamics of nanomaterials at high temperature and pressure. ACS Sensors. (2020) 

In-house Developed Micro-watt resolution Reaction Calorimeter

Synthesized Pd Nanocubes for Studies of Hydrogen and Energy Storage 

Calorimetric heat release spectra of hydrogen intercalation into Pd lattice