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‘Joshua Caldwell’

International research collaboration reveals new possibilities in nanophotonics

Mar. 3, 2022—Joshua Caldwell, Flowers Family Chancellor’s Faculty Fellow in Engineering and associate professor of mechanical engineering, and Joseph Matson, a graduate student in Caldwell’s lab, have contributed to an international study that has discovered a new type of light-matter coupling. The work has long-term implications for how optical components can be even further miniaturized, a discovery...

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Breakthrough measurements/theory of vibrating atoms in nanostructures ushers in new class of technology

Jan. 26, 2022—Vanderbilt researchers Sokrates Pantelides and Joshua Caldwell are part of an international collaboration that has demonstrated a new way to manipulate and measure subtle atomic vibrations in nanomaterials. This breakthrough could make it possible to develop customized functionalities to improve on and build new technologies. Sokrates Pantelides (Vanderbilt University) Joshua Caldwell (Vanderbilt University) Electron beams...

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Novel advanced light design and fabrication process could revolutionize sensing technologies

Oct. 21, 2021—Vanderbilt and Penn State engineers have developed a novel approach to design and fabricate thin-film infrared light sources with near-arbitrary spectral output driven by heat, along with a machine learning methodology called inverse design that reduced the optimization time for these devices from weeks or months on a multi-core computer to a few minutes on...

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Photonics discovery portends dramatic efficiencies in silicon chips

Mar. 1, 2021—A team led by Vanderbilt engineers has achieved the ability to transmit two different types of optical signals across a single chip at the same time. The breakthrough heralds a potentially dramatic increase in the volume of data a silicon chip can transmit over any period of time. With this project, the research team moved...

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Researchers develop unique process for producing light-matter mixture

Dec. 7, 2020—Discovery provides insight for developing next generation optoelectronic and infrared devices In groundbreaking new research, an international team that includes a Vanderbilt engineer has developed a unique process for producing a quantum state that is part light and part matter. The discovery provides fundamental new insights for more efficiently developing the next generation of quantum-based...

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Caldwell, Hatzell are inaugural Flowers Family Faculty Fellows in Engineering

Apr. 27, 2020—Mechanical engineering professors Joshua Caldwell and Kelsey Hatzell are inaugural recipients of Flowers Family faculty awards. Caldwell is the Flowers Family Chancellor’s Faculty Fellow in Engineering. Hatzell is the Flowers Family Dean’s Faculty Fellow in Engineering. The awards target professors who have shown a strong evidence of scientific accomplishment early in their careers and are...

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Caldwell is 2020 Materials Research Society Fellow

Feb. 21, 2020—Vanderbilt professor Joshua D. Caldwell has been selected as a 2020 Materials Research Society Fellow. The MRS Fellows will be recognized at the society’s spring meeting in Phoenix in April. The fellowship recognizes Caldwell for pioneering contributions to the understanding and utilization of polar semiconductors for power electronics and infrared nanophotonics, and for his volunteerism...

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Phase change materials may free up valuable real estate for optical data transmission

Nov. 21, 2018—New research into the phase-changing capabilities of vanadium dioxide and infrared properties of hexagonal boron nitride holds promise for faster, more efficient optical data transmission, particularly in big data “farms” where thousands of computers must communicate to provide answers. A team composed of researchers from Vanderbilt University, the University of Georgia and Kansas State University...

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