Abstract: An ultrasound sparse array consists of a sparse distribution of elements over a 2-D aperture. Such an array is typically characterized by a limited number of elements, which in most cases is ...

The alien-like machines, described as ‘legged metamachines’, are built from autonomous modules that can be snapped together in a variety of forms. Researchers say the approach could lead to robots ...

For years, Diane Sylvia paid her utility bill on time and rarely worried about the cost of keeping the lights on in the 1,100 ...

The U.S. and Israel are striking a much wider array of targets in Iran than they did during 12 days of war last summer, when their focus was on the ...

† Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States ‡ Department of Electrical Engineering and Computer Science, Northwestern University ...

Abstract: A large-scale reconfigurable reflect-array antenna (RRA) with 2-bit phase resolution is reported here at the Ka-band. The unit cell is designed based on a segmented resonator with end ...