Our first work in scattering type visible near-field scanning optical microscope has been published in Applied Optics. Abstract: Due to its superb imaging spatial resolution and spectroscopic viability, scattering-type scanning near-field optical microscopy (s-SNOM) has proven to be widely applicable for nanoscale surface imaging and characterization. However, limited works have investigated the sensitivity of […]
Devon passed his doctoral dissertation defense titled: “Fundamental Studies of Engineered Electron Interactions in Micro/Nanoscale Optical and Thermionic Devices” Photon interactions with electrons have led to devices engineered to improve industries in communication, energy, and sensing. Among the different types of devices, nanoantennas are particularly useful in these industries due to their spectral versatility achieved […]
Prof. Park and Amun attended the Eurotherm Nanoscale and Microscale Heat Transfer VI Conference to present the group’s recent research progresses. A. Jarzembski, T. Tokunaga, J. Crossley, J. Yun, C. Shaskey, R. Murdick, I. Park, M. Francoeur & K. Park (2018). “Heat transfer enhancement due to acoustic phonon tunneling at near-contact vacuum gap distances.” Nanoscale and […]
Our research in collaboration with Prof. Jungchul Lee’s group at KAIST (Korea) has been published in Micro and Nano Systems Letters. The paper title is “Hydrogel tip attached quartz tuning fork for shear force microscopy”. Abstract: This paper reports the first demonstration of hydrogel conical tip attachment onto quartz tuning fork (QTF) by using an […]
Prof. Park attended the 1st Multi-Scale Heat Transfer Workshop at the University of Texas, Dallas (Nov. 14th – 17th), and gave a presentation entitled “Things that can happen in nanoscale vacuum gap distances.”
The U would like to announce that it was selected to receive a $500,000 award from the U.S. Department of Energy Solar Energy Technologies Office (SETO) to advance concentrating solar-thermal power (CSP) research and development. This project will explore a novel approach to improve the overall solar to thermal collection efficiencies by reducing both optical and thermal losses. Critical to enabling large-scale concentrated […]
In recognition for devotion to advancing research intellectual merit and benefiting the broader impacts to society, the Department of Mechanical Engineering recognized Graduate Student Researchers of the Year at an event on August 24, with faculty and students. Awards were presented for each of the four broad mechanical engineering research areas: “Our students’ success is […]
Devon has successfully finished his PhD proposal defense. The title of his presentation is “Fundamental studies of engineered electron interactions in optical and thermionic devices at the micro and nano scale.” Congratulations, Devon!
UNEL welcomes the joining of A. N. M. Taufiq Elahi for his PhD studies. He graduated from the Bangladesh University of Engineering and Technology in 2017. He will be studying the thermionic emission in a nanogap distance and the development of IR camouflage fabrics.
A lot of energy generated from everyday devices is wasted in the form of heat. Whether it’s a car engine, solar panels or the central processing units (CPUs) that run laptops or smartphones, these devices inevitably dissipate heat into the environment. As of 2017, more than 66 percent of energy resources consumed in the U.S. […]
Prof. Park, the PI of the Utah Nano-Energy Laboratory, has been promoted to Associate Professor with tenure as of July 1st, 2018. Congratulations!
The Department of Mechanical Engineering is excited to announce that Ph.D. student, Mohammad Ghashami received a University of Utah Graduate Research Fellowship from the Graduate School. Advised by mechanical engineering associate professor Keunhan “Kay” Park, Ghashami is a member of the Utah Nano-Energy Laboratory. A Graduate Research Fellowship (GRF) is a one-year, non-renewable award of which full-time […]
Amun has published in Review of Scientific Instruments. The title of his publication is “Feedback control of local hotspot temperature using resistive on-substrate nanoheater/thermoemeter”. Abstract: This article reports the active control of a local hotspot temperature for accurate nanoscale thermal transport measurement. To this end, we have fabricated resistive on-substrate nanoheater/thermometer (NH/T) devices that have a […]
Mohammad has published in Physical Review Letters. The title of his publication is “Precision Measurement of Phonon-Polaritonic Near-Field Energy Transfer between Macroscale Planar Structures Under Large Thermal Gradients”. Abstract: Despite its strong potentials in emerging energy applications, near-field thermal radiation between large planar structures has not been fully explored in experiments. Particularly, it is extremely challenging to […]
Cedric has passed his PhD qualification exams. To be officially considered as admitted to candidacy in the Ph.D. program, applicants must pass a qualifying exam. The qualification exams are the first of three major steps in the Mechanical Engineering PhD program at the University of Utah. Students select two subject areas which support their Ph.D. research. The topics […]
Devon has published in the Journal of Nanophotonics. The title of his publication is “Design analysis of hybrid silicon-on-nothing photonic crystal–nanoantenna structures for engineering of midinfrared radiative properties”. Abstract: Electromagnetic (EM) behaviors of photonic crystals (PhCs) and nanoantenna (NA) arrays have been extensively studied and applied to a myriad of applications, including light absorption, surface-enhanced Raman scattering, light trapping […]
Dallin is named as one of four Dee Foundation UROP Scholars for 2018 for project entitled “Efficacy of Passive Radiative Thermal Cooling Textiles for Human Application.” Through the Undergraduate Research Opportunities Program (UROP), the Dee Foundation recognizes outstanding undergraduate researchers who are contributing to furthering the growth and well-being of the people of Northern Utah. […]
Amun and Cedric have published in the Frontiers of Energy. The title of their publication is “Review: Tip-based vibrational spectroscopy for nanoscale analysis of emerging energy materials”. Abstract: Vibrational spectroscopy is one of the key instrumentations that provide non-invasive investigation of structural and chemical composition for both organic and inorganic materials. However, diffraction of light fundamentally limits the […]
My PhD study aims to address the current challenges in the experimental measurement of near-field thermal radiation and to further investigate its application for energy conversion. To this end, I propose to develop a versatile experimental setup for fundamental understanding and measurement of near-field thermal radiation that also includes the process of design and fabrication […]
The proposed research aims to provide a complete understanding of extreme near-field thermal radiation by combining the sub-nm z -axis resolution of scanning probe microscopy (SPM) with optical detection of tip-scattering and thermal sensitivity of nanoheater/thermometer (NH/T) devices. Furthermore, to fundamentally understand how near-field radiation exchanges between the tip and underlying substrate, a closed-form model […]
Mohammad Ghashami has published in the Journal of Quantitative Spectroscopy and Radiative Transfer. The title of his publication is “Near-field enhanced thermionic energy conversion for renewable energy recycling”. Abstract: This article proposes a new energy harvesting concept that greatly enhances thermionic power generation with high efficiency by exploiting the near-field enhancement of thermal radiation. The proposed […]
Congratulations Cedric Shaskey for receiving the National Science Foundation Graduate Research Fellowship! Native of Salt Lake and a graduate from Olympus High School before attending the University of Utah, undergraduate Cedric Shaskey, B.S.’17 double majoring in mechanical engineering and physics, is a recipient of a prestigious 2017 National Science Foundation (NSF) Graduate Research Fellowship, which covers […]
The Micro/Nanoscale Energy Transport and Conversion (METAC) Group (PI: Kay Park) is seeking for highly motivated undergraduate students who want to establish research experiences in the following nanoscale thermal sciences and engineering projects. Interested students please contact Prof. Park (email@example.com) with a transcript and a resume. If selected, students are expected to work with graduate […]
Sina passed his doctoral dissertation defense titled: “Sub-Continuum Thermal Transport in Tip-Based Thermal Engineering” For the past two decades, tip-based thermal engineering has made remarkable advances to realize unprecedented nanoscale thermal applications, such as thermomechanical data storage, thermophysical/chemical property characterization of materials in nanometer scale, and scanning thermal imaging and analysis. All these applications involve […]
Amun Jarzembski has published in the Journal of Quantitative Spectroscopy and Radiative Transfer. The title of his publication is “Finite dipole model for extreme near-field thermal radiation between a tip and planar SiC substrate”. Abstract: Recent experimental studies have measured the infrared (IR) spectrum of tip-scattered near-field thermal radiation for a SiC substrate and observed up to […]
Sina Hamian has published in Applied Physics Letters. The title of his publication is “Quantitative Probing of Tip-Induced Local Cooling with a Resistive Nanoheater/Thermometer”. Abstract: This article reports the investigation of tip-induced local cooling when an atomic force microscope (AFM) cantilever tip scans over a joule-heated Pt nanowire. We fabricated four-point-probe Pt resistive nanothermometers having […]
Congratulations to Professors Pierre-Emmanuel Gaillardon and Kay Park who recently received a University of Utah Research Instrumentation Fund for “Shared High-Resolution Nanolithography System”. This fund will help bring the SwissLitho AG NanoFrazor to the University of Utah Nanofab cleanroom facility. The SwissLitho NanoFrazor will provide: High‐resolution direct write nanolithography: Resist is directly vaporized during the […]
Mohammad presented his research titled “Experimental investigation of plane-plane near-field thermal radiation” at the IMECE 2016 (ASME) conference in Phoenix, AZ. His talk covered his most recent experimental results of near-field thermal radiation measurement between two quartz samples with size of 5×5 square millimeter.
Congratulations to Prof. Kay Park! He recently received a University of Utah Seed Grant for the “Development of Scanning Near-Field Thermoreflectance Microscopy for Nanoscale Temperature and Phonon Mean Free Path Spectra Mapping”. Understanding of thermal transport at the nanoscale has increasing importance as device sizes shrink and applications for nanotechnology become more prevalent. At these length […]
Prof. Bong Jae Lee, Associate Professor at the Korea Advanced Institute of Science and Technology (KAIST), visited the University of Utah to give a seminar titled “Tailoring Radiative Properties with Nanostructures for Solar Thermal Applications”. See his seminar flyer here. [divider] Abstract: The advancement of nanotechnology has enabled precise manufacturing of structures with feature sizes smaller […]