May 2015 • The PCB Design Magazine 47
CANNONBALL STACk FOR CONDuCTOR ROuGHNESS MODELING continues
article
Figure 14: Comparing correction factors for each model. as can be seen all three models provides
equivalent correction factors.
[10] Isola Group, Chandler, Arizona
[11] Oak-Mitsui, Hoosick Falls, New York.
[12] Electrochemicals Inc. CO-BRA BOND.
[13] Macdermid Inc., Multibond.
[14] Keysight Technologies EEsof EDA
Advanced Design System 2015.01 software.
[15] Wild River Technology, Beaverton,
Oregon.
[16] Simonovich, Bert, "Practical Method for
Modeling Conductor Surface Roughness Using
The Cannonball Stack Principle," white paper,
Issue 1.0, April 8, 2015.
Bert simonovich had a 32-year
career at Bell northern re-
search/nortel, in Ottawa, Can-
ada, helping to pioneer several
advanced technology solutions
into products. he has held a
variety of engineering, research
and development positions, eventually spe-
cializing in high-speed signal integrity and
backplane architectures. simonovich can be
contacted through lamsimenterprises.com.
li-ion (lithium-ion) batteries, which power
most portable electronics today, include ele-
ments such as lithium and cobalt. as a potential
alternative, na-ion (sodium-ion) batteries have
attracted attention because of the abundance
and low cost of uniformly-distributed sodium.
however, in order to realize a sodium-ion
battery, a pair of compounds capable of inter
-
calation (absorbing and releasing) of sodium
ions is required for each of the negative and
positive electrodes.
Professor atsuo yamada and associate
Professor Masashi Okubo of the university
of Tokyo's Department of Chemical system
engineering, in collaboration with the re-
search group of Professor Isamu Moriguchi at
nagasaki university, has clarified that a
nanosheet compound comprising titanium
and carbon is capable of sodium-ion intercala-
tion.
Sodium-ion Hybrid Capacitor as
Next-generation Battery
