Multi-point RF system for near-field coherent sensing (NCS)

New paper demonstrates effectiveness of measuring full blood pressures without an arm cuff

Professor Edwin Kan, along with Xiaonan Hui and Thomas Conroy, both Ph.D. students in Kan’s research group, are the authors of the paper titled “Multi-Point Near-Field RF Sensing of Blood Pressures and Heartbeat Dynamics.” “Blood pressures measured by an arm or wrist will give you ‘brachial pressures’ instead of the central pressure,” Kan explained. “Brachial pressures can be similar if the cuff is maintained at the height of the heart, but it is an indirect measurement together with the arm condition.” Cuff-based measurements provide an estimate of an average blood pressure over a number of... Read more

Image from Landon Ivy's ventilator project video

Student team eyes next steps for ventilator designed in a bedroom lab

Landon Ivy started his Ph.D. work with Professor Amit Lal’s SonicMEMS Lab, developing new processes for micro electrostatic linear actuators which will eventually drive the locomotion of a microbot. He had cultivated an affinity for working on hardware during his undergraduate studies, and when he got to Cornell he spent as much time as he could in the Cornell NanoScale Facility (CNF). Then the pandemic forced Ivy along with all of his SonicMEMS Lab colleagues off campus. “A few days later, Dr. Lal got the word that there would be a ventilator shortage, so he encouraged the group to brainstorm... Read more

Delay-line model of a thin broadband metalens.

Exploring the theoretical limits of metalenses

A new paper published in Optica, “Focusing on bandwidth: achromatic metalens limits,” details the finding of some fundamental limits on so-called “metalenses,” ultra-thin flat lenses which have shown great promise in their ability to function as ultracompact optical systems for focusing and imaging. Federico Presutti, Ph.D. student in applied engineering and physics, and Francesco Monticone, assistant professor in electrical and computer engineering are the paper’s authors. “Think of any optical system with lenses for focusing and imaging: a camera, microscope, a lens antenna,” Monticone said... Read more

Cornell 2020

Class of 2020 spotlights shared on Medium

A diverse collection of undergraduates and graduate and professional students, as Cornellians they’ve explored courses far beyond their academic disciplines; pursued firsthand research in labs and in the field; given their time, energy and ideas to serve the public good; and enlivened and entertained campus with their artistic and athletic endeavors. Read more

Image by Cornell NanoScale Facility (CNF), a member of NNCI supported by NSF Grant NNCI-1542081

Building the New Computer

Computer engineering researchers are starting to grapple with the implications of what has come to be seen as the end of, or the breaking of, Moore’s law. The observation that transistor density on an integrated circuit doubled about every two years is named after Gordon Moore, whose 1965 paper originally described and predicted this performance growth rate. Moore's law allowed the semiconductor industry to transform the world by building ever-smaller transistors with increasing density, creating the ubiquitous and relatively inexpensive computing environment we live in today. Even though... Read more

New paper outlines an optimum design for Ga2O3 Schottky barrier diodes

Wenshen Li, Ph.D. student in electrical and computer engineering, is the lead author of the paper published in Applied Physics Letters, titled “Near-ideal reverse leakage current and practical maximum electric field in β-Ga2O3 Schottky barrier diodes.” Devansh Saraswat, Yaoyao Long, Kazuki Nomoto along with Professors Debdeep Jena and Huili Grace Xing are co-authors. “For the first time, we observed an ideal reverse leakage characteristic in Ga2O3 Schottky barrier diodes,” said Li. “With such information, we can accurately determine how large an electric field can be supported in Ga2O3... Read more

Two graduating seniors recognized for academics and service

From among the accomplished members of the Cornell ECE Class of 2020, two seniors, Katie Bradford and Kevin Ying, have been selected to receive prestigious year-end awards. The William S. Einwechter Award Katie Bradford ’20 will receive the William S. Einwechter Award, presented annually to a member of the ECE Senior Class who has demonstrated distinguished records of service to ECE and its students, to the College and to the University. Bradford’s work in ECE focused on hardware, ranging from UAVs with the CUAir autonomous aerial system project team, to robotics projects in the Maker Lab... Read more

Yongjin Cho’s paper is Editor’s Pick in Applied Physics Letters

Yongjin Cho, research associate in electrical and computer engineering, is the lead author of a new paper published by the journal Applied Physics Letters. The paper titled “Molecular beam homoepitaxy on bulk AlN enabled by aluminum-assisted surface cleaning” was selected as an Editor’s Pick. ECE Professors Huili Grace Xing and Debdeep Jena are among the paper’s co-authors. The research examines the effectiveness using aluminum to assist in the cleaning of native surface oxides of bulk AlN. “Native surface oxide of AlN substrate has been a major obstacle to the success of high quality sample... Read more

Christina Delimitrou receives Microsoft Research Faculty Fellowship

Delimitrou is an assistant professor and the John and Norma Balen Sesquicentennial Faculty Fellow in electrical and computer engineering. She leads the Systems, Architecture, and Infrastructure Lab (SAIL) and her research interests include cloud computing, computer architecture and applied machine learning. The Microsoft Research Faculty Fellowship recognizes promising new faculty, whose exceptional talent for research and innovation identifies them as emerging leaders in their fields. This year, 185 individuals were nominated and five were selected. Delimitrou’s recent work focuses on... Read more