David Arnold's Research Group

2017 IMG Annual Report

The IMG faculty are pleased to release the IMG annual report for the calendar year 2017. This document is a record of the group activities, achievements and finances for the previous year. You are encouraged to refer to this document if needed.

The 2017 IMG Annual Report can be downloaded here.

IMG Kickoff Meeting

Event date: 
Tue, 08/21/2018 - 11:45am to 1:30pm

With the Fall semester arriving, we will be having our IMG Kickoff Meeting on August 21, 2018 (day before classes start) from 11:45AM to 1:30PM. During this meeting, we'll discuss important IMG updates, introduce new members, recognize our accomplishments over the last year, and present some IMG awards. We may also try to take a group photo, so if you have a IMG polo or t-shirt, please wear it.

Please note, all IMG members are expected to attend this meeting. Pizza and drinks will be provided.

IMG Seminar: Camilo Vélez and Cary Kuliasha

Event date: 
Fri, 04/20/2018 - 11:45am to 12:45pm

This week, the speakers for the IMG Seminar are:

  • Camilo Vélez (Dr. Arnold's group) on Integrating microfabricated magnetic materials in 5G telecommunication systems
  • Cary Kuliasha (Dr. Judy's group)

Integrating microfabricated magnetic materials in 5G telecommunication systems.  The microfabrication of ferrite structures on semiconductor substrates for mm-wave applications is an imminent necessity to the development of components in the 5th generation of telecommunication systems (5G). A team from IMG is conducting research in this area under the DARPA/MTO program called: Magnetic Miniaturized and Monolithically Integrated Components (M3IC). We have implemented fabrication and characterization techniques that required our group’s combined know-how on MEMS, microfabrication, magnetics, nanoparticles, transmission lines and RF. During this seminar we will present techniques to pattern >100 µm thick barium hexaferrite (BaFe12O19) films on semiconductor substrates, revealing material’s peak signal absorption associated with ferromagnetic resonances at 45.9 GHz.

IMG @ Hilton Head 2018

IMG will be well-represented at the upcoming Hilton Head Workshop in June 2018: 

Microfabricated Electrodynamic Wireless Power Receiver for Bioimplants and Wearables (Oral)
Nicolas Garraud, Daniel Alabi, John D. Varela, David P. Arnold, and Alexandra Garraud

Robust and Scalable Tissue-Engineerined Electronic Nerve Interfaces (Oral)
Cary Kuliasha, Benjamin Spearman, Eric W. Atkinson, Abbas Furniturewalla, Paritosh Rustogi, Sahba Mobini, Elizabeth A. Nunamaker, Anthony Brennan, Kevin Otto, Christine Schmidt, and Jack W. Judy

Batch-Fabrication of Diamagnetically Levitated Microrobots (Oral)
Camilo Velez, Ron E. Pelrine, and David P. Arnold

Increasing the Thickness and Deposition Rate of High-Performance Electroplated CoPt Permanent Magnets (Poster)
Yuzheng Wang, Jacob Ewing, and David Arnold

A Nanomechanical Identification Tag Technology for Traceability and Authentification Applications (Poster)
Mehrdad Ramezani, Angela R. Newsome, Mayur Ghatge, Fengchao Zhang, Swarup Bhunia, and Roozbeh Tabrizian

High Kt2·Q Lamb-Wave ScAlN-On-Silicon UHF and SHF Resonators (Poster)
Mayur Ghatge, Valeriy Felmetsger, and Roozbeh Tabrizian

IMG Seminar: Dr. Alexandra Garraud and Todd Schumann

Event date: 
Fri, 01/26/2018 - 11:45am

This week, the speakers for the IMG Seminar are:

11:55-12:20 pm: Dr. Alexandra Garraud on "Extending the range of wireless power transmission for bio-implants and wearables

12:20-12:45 pm: Todd Schumann  on "Solely calcine controlled ferroelectric/memristor behavior in barium titanate"

 

Miniature Wireless Charging System for Cluttered Environments

There is an increasing demand for wireless power charging of mobile electronic devices, electric vehicles, biomedical implants and IoT sensor networks. Many of the already available wireless power transmission systems are based on inductive coupling and the size ranges in the cm’s scale, linked to the large surface area requirement. A competing technology is based on an RF approach, with small size chip but impractical power levels of pW to µW, and efficiency close to unity.

Daniel Alabi, Nicolas Garraud and John Varela won the Best Poster and the Best Demo Awards at the MIST 2017 Fall Meeting

Congratulations to Daniel Alabi, Nicolas Garraud and John Varela for winning the Best Poster and the Best Demo Awards at the MIST 2017 Fall Meeting for their project "Chip-Scale MEMS Receivers for Low-Power Wireless Charging."

Advisors: Dr. Alexandra Garraud and Dr. David Arnold