Reducing conducting thin film surface roughness for electronics

phys.org | 3/7/2017 | Staff
aka1aka1 (Posted by) Level 4
Click For Photo: https://3c1703fe8d.site.internapcdn.net/newman/gfx/news/hires/2017/reducingcond.jpg

Surface roughness reduction is a really big deal when it comes to fundamental surface physics and while fabricating electronic and optical devices. As transistor dimensions within integrated circuits continue to shrink, smooth metallic lines are required to interconnect these devices. If the surfaces of these tiny metal lines aren't smooth enough, it substantially reduces their ability to conduct electrical and thermal energy—decreasing functionality.

A group of engineers at the University of Massachusetts Amherst are now reporting an advance this week in Applied Physics Letters, from AIP Publishing, in the form of modeling results that establish electrical surface treatment of conducting thin films as a physical processing method for reducing surface roughness.

Roughness - Problem - Years - Currents - Surface

"We've been thinking hard about this roughness problem for many years, since showing that electric currents can be used to inhibit surface cracking," said Dimitrios Maroudas, co-author and a professor in the Department of Chemical Engineering. "So as soon as we developed the computational tools to attack the full film roughness problem, we got to work."

The group's work focused on using a copper film on a silicon nitride layer to quantify the model parameters for their simulations and make comparisons with available experimental findings, which they were able to reproduce.

Surface - Electromigration - Concept - Maroudas - Transport

"Surface electromigration is the key physical concept involved," Maroudas explained. "It's the directed transport of atoms on the metal surface due to the so-called electron wind force, which expresses the transfer of momentum from the electrons of the metal moving under the action of an electric field to the atoms (ions)—biasing atomic migration."

Think of it as akin to the diffusion of ink in flowing water. "Electromigration's role in the transport of surface atoms is analogous to that of convection due to flow on the transport of ink within the water," Maroudas said. "The combined effects of a well-controlled applied electric field and...
(Excerpt) Read more at: phys.org
Wake Up To Breaking News!
Communist, Socialist, Democrat, Republican, at this point, what difference does it make.
Sign In or Register to comment.

Welcome to Long Room!

Give Us 5 Minutes, We'll Give You The World!

LongRoom Culture
Mother Bear and Cubs Crossing the Road And Elk Crossing the Road! It is a good day to cross the road!  Here are the Bears!  And...
Beautiful Red Streams of Lava Flowing Into Sea In Hawaii! This colorful scene is nature at its most magnificent, the hot lava...
Bear Cub With A Clam Holding On To It's Paw! This cub stands up as if to say "Help! Mom!!"  But the clam holds firmly to his...
8 Year Old Girl Tries Bionic Hand for First Time - Amazing! Bionic technology has come a long way and makes the prospects look...
Rabbit Leaps Joyfully Around His New Sand Pit, Ending By Flopping Over! What a great idea for a bunny sand pit for bunnies...
Extreme Frisbee? Two Frisbee Players Toss and Catch An Incredibly Long Frisbee Throw! The Throw by Brodie Smith.   This...
Why Tying Your Dog's Leash To A Plastic Chair Is A Really Bad Idea! The Chair:  "It can't be bargained with. It can't be...
Man Helping Little Old Lady Across The Road Almost Runs Her Over! This good Samaritan leaves his car in neutral as he goes to...
Love Story - Klepetan the Stork Has Returned to His Crippled Mate Malena Every Year for 14 Years! On a rooftop in the village...
Colorblind Grandfather Sees Color for the First Time! This touching video is the first time this grandfather sees colors with...
A Walk In The Newly Opened Glass Bottomed "Sky Pool" In Houston, Is Terrifying! This infinity pool in Market Square Tower, a...
Incredible "Hole in Two" by Henley at Master's Tournament! This amazing shot actually stayed in the hole and caused enough...
Artistic Rock Creations Shown In A Great Slideshow! These amazing pictures made out of rocks really capture solid images that...
Father Finds Great Solution To Stop His Infant Son From Crying! Father faced with his son crying comes up with a great idea.
Alligator In A Sewer! This alligator in a sewer demonstrates that they really can be found there!  "People don't realize the...
Cowabunga! Great Curl On A Wave! The awesomeness of water is displayed quite well in this gif of a huge wave.
One Of The Most Venomous Caterpillars In The World! If you see anything like this, don't touch it, it can put you in the...
Mesmerizing Domino World Record Set - Most Dominoes Ever To Fall In A Circle! It took 18 expert domino artists ten days to set...
Huge Chicken Emerges From Coop Attracts Internet Attention! The internet has become fascinated with a giant chicken!  When this...
Video Of Massive Shredder For Automobiles Shown In Reverse! This incredible machine has ingested a car, which in this video it...
Coca-Cola Polar Bear Mascot Joking With People During Photography Session! Being a mascot is definitely a skill!  The Coca-Cola...
Adorable Kitten Drinking Milk And Wiggling Ears! Small kittens are so cute when they drink from a bottle because they wiggle...
Dog Digs Shallow Hole And Lays Down In It For A Nap! Caught in the act of taking a nap!  This beautiful dog is so charming when...
Amazing NEW WORLD RECORD Ski Jump By Stefan Kraft!!!! Stefan Kraft literally flies to this new world record!  An Austrian ski...
Closeup View Of A Tire Change During A Pit Stop! You Can See The Brakes On Fire! Pitstops are awesome to watch because the...
Cat Closes Cupboard Door as Baby is Playing in the Cupboard! The cat soundly closes the cupboard door on this baby who is...
Dog Pool Party! Swim Dogs Swim!  This pool party went to the dogs.  It looks like humans can come, as long as they are...
Cat Unsuccessfully Tries To Wake Up Friend With Some Gentle Pats! This cute cat tries to wake up a sleepy friend.  His...