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Nature publishes paper on sub-wavelength lateral detection of tissue-approximating masses using an ultrasonic metamaterial lens

Abstract: Practically applied techniques for ultrasonic biomedical imaging employ delay-and-sum (DAS) beamforming which can resolve two objects down to 2.1λ within the acoustic Fresnel zone. Here, we demonstrate a phononic metamaterial lens (ML) for detection of laterally subwavelength object features in tissue-like phantoms beyond the phononic crystal evanescent zone and Fresnel zone of the emitter. The ML produces metamaterial collimation that spreads 8x less than the emitting transducer. Utilizing collimation, 3.6x greater lateral resolution beyond the Fresnel zone limit was achieved.

New Foam Could Change Building Industry

Funded by a National Science Foundation grant, a research team led by Nandika D'Souza in the Department of Mechanical Engineering has created a new insulation foam that is not only safer than conventional polyurethane-based products, but is also stronger, compostable and energy-efficient. The research crossed the disciplines of construction engineering and mechanical engineering, programs that were recently merged into one department.

AMMPI faculty becomes Fellow of International Association of Advanced Materials

We are happy to announce Dr. Francis D'Souza, AMMPI faculty and  Distinguished Research Professor of Chemistry at UNT has become a Fellow of International Association of Advanced Materials for year 2020 In recognition for the contribution to “Advancement of Materials to Global Excellence” along with the entitlement to use the designatory letters “FIAAM”. 

UNT AMMPI faculty study increased material reliability for army drones

DENTON (UNT), Texas — Diana Berman, Samir Aouadi and Andrey Voevodin of the department of Materials Science and Engineering, the University of North Texas, are applying their expert knowledge in tribology – the study of friction – to rethink the combustion engines that power aerial Army drones with a $780,000 grant from the Army Research Laboratory in Adelphi, Maryland.

AMMPI researchers receive $1 million grant to study stress deformation on metal alloys for aerospace military applications

A UNT Engineering research team is working to better understand how metal alloys function at the atomic level with a $1 million grant from the Department of Defense, under the U.S. Air Force Office of Scientific Research.

The team consists of three experts from the Department of Materials Science and Engineering: Principal investigator professor Srinivasan Srivilliputhur and co-PIs Rajarshi Banerjee, a Presidential and Regents Professor and University Distinguished Research Professor Michael Baskes, a member of the U.S. National Academy of Engineering.

Dr. D’Souza from Chemistry department and AMMPI faculty Awarded CRSI Medal

Dr. Francis D'Souza, University Distinguished Research Professor of Chemistry, recently received the Chemical Research Society of India (CRSI) Medal. CRSI exists to "recognize, promote and foster talent in Chemistry and Chemical Sciences and to improve the quality of Chemical Education at all levels." The CRSI Medal 2021 is the highest honor bestowed by the Chemical Research Society of India to scientists of Indian origin working elsewhere.

UNT creates 3D-printed ventilator splitters for COVID-19 patients

UNT is using 3D printing technology to make ventilator splitters that will allow doctors to use a single ventilator to treat two patients.

In response to the possible need for more ventilators to treat critically ill COVID-19 patients, a team from UNT Engineering collaborated to adapt a design and manufacture ventilator splitters in the college’s digital manufacturing lab.

AMMPI's Faculty Dr. Scharf on sintering lightweight ceramic composites

Materials Science and Engineering Professor Thomas Scharf and his team are working with the Army Research Lab to develop stronger protection for the military.

Working with ARL’s Protection and Materials and Manufacturing Science Divisions, he and his group at UNT have been sintering novel, lightweight ceramic composites with the goal to create stronger and better body armor. It’s a process where researchers use heat and pressure to form a solid from powder without going so far as to turn it to liquid or vapor.

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