Highlight: STM banopatterning on pristine Nb-doped SrTiO3 surfaces
November 4, 2009
The surface morphology of modified Nb:STO surfaces. By using different electric pulse conditions, holes of different sizes and depths are created on a ~500-nm atomic-flat terrace. The sizes of the holes are ~10 to ~20 nm.
Collaborative users from the Advanced Photon Source at the Argonne National Laboratory, working with the Electronic & Magnetic Materials & Devices Group, have found a controllable way to modify the surfaces of pristine Nb-doped SrTiO3 (Nb:STO) at the nanoscale.
For decades, most of the work on noncleavable STO focused on heavily treated surfaces (chemical etching, sputtering/annealing).
This is the first scanning tunneling microscope (STM) work on how the tip can interact with pristine Nb:STO surfaces created by in situ fracturing. By fracturing Nb:STO at ~50 K, ~500-nm atomically flat TiO2 terraces with a random covering of SrO molecules are attained.
Using a pulsed sample-tip bias, the SrO clusters can be removed and redeposited reversibly from surface to STM tip.
This work demonstrates the interaction between the STM tip and oxide surfaces, and it offers a pathway to creating nanoscale objects on single-crystal oxide surfaces.
More information: T. Chien, T. Santos, M. Bode, N. Guisinger, J. Freeland, Appl. Phys. Lett. 95, 163107 (2009).
-
Highlight: Nanoscale piezoresponse of ferroelectric domains
Oct 20, 2009 |
not rated yet |
0
-
Molecules that suck
Nov 21, 2005 |
not rated yet |
0
-
Experiments Prove Existence of Atomic Chain Anchors
Feb 03, 2005 |
not rated yet |
0
-
Researchers improve ability to write and store information on electronic devices
Sep 13, 2007 |
not rated yet |
0
-
Scientists Manipulate Atoms on a Rough 3-D Surface
Jan 25, 2007 |
not rated yet |
0
-
Engineers build first sub-10-nm carbon nanotube transistor
Feb 01, 2012 |
4.9 / 5 (33) |
30
-
Something old, something new: Evolution and the structural divergence of duplicate genes
Jan 31, 2012 |
4.6 / 5 (7) |
1
-
The hidden nanoworld of ice crystals: Revealing the dynamic behavior of quasi-liquid layers
Jan 30, 2012 |
5 / 5 (4) |
1
-
Stock market network reveals investor clustering
Jan 27, 2012 |
3.9 / 5 (23) |
8
-
Of microchemistry and molecules: Electronic microfluidic device synthesizes biocompatible probes
Jan 26, 2012 |
5 / 5 (2) |
0
-
Anatomy of Fat man: implosion-critical bomb
1 hour ago
-
what makes two sounds similar???
2 hours ago
-
What would happen when a jet travelling at Mach 10 experiences engine failure
8 hours ago
-
Rust from my microwave ruined a nice bowl of soup and also my day
10 hours ago
-
gas leaks in space
14 hours ago
-
Weight required to balance a boom stand?
15 hours ago
- More from Physics Forums - General Physics
More news stories
Lab study raises questions over nano-particle impact
Tests involving chickens have raised questions about the impact on health from engineered nano-particles, the ultra-fine grains commonly used in drugs and processed foods, scientists said on Sunday.
Nanotechnology / Bio & Medicine
3 hours ago |
5 / 5 (4) |
0
New kind of solar cell could capture significantly more energy than current cells
New solar cells could increase the maximum efficiency of solar panels by over 25%, according to scientists from the University of Cambridge.
Feb 08, 2012 |
4.5 / 5 (13) |
14
|
Nanoshell whispering galleries improve thin solar panels
Visitors to Statuary Hall in the U.S. Capitol Building may have experienced a curious acoustic feature that allows a person to whisper softly at one side of the cavernous, half-domed room and for another on ...
Nanotechnology / Nanomaterials
Feb 07, 2012 |
4.4 / 5 (7) |
6
|
'Dark plasmons' transmit energy
Microscopic channels of gold nanoparticles have the ability to transmit electromagnetic energy that starts as light and propagates via "dark plasmons," according to researchers at Rice University.
Feb 09, 2012 |
4.8 / 5 (10) |
1
|
Revealing how a battery material works
Since its discovery 15 years ago, lithium iron phosphate (LiFePO4) has become one of the most promising materials for rechargeable batteries because of its stability, durability, safety and ability to deliver ...
Nanotechnology / Nanomaterials
Feb 08, 2012 |
5 / 5 (6) |
0
|
Overeating may double risk of memory loss
New research suggests that consuming between 2,100 and 6,000 calories per day may double the risk of memory loss, or mild cognitive impairment (MCI), among people age 70 and older. The study was released today and will be ...
Google might launch Drive for cloud storage soon
(PhysOrg.com) -- Google's next big move, according to the Wall Street Journal, is a cloud storage service called Drive. Hardly first to the plate, Google is simply catching up to introducing its cloud reposi ...
Scientists discover molecular secrets of 2,000-year-old Chinese herbal remedy
For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan, from a type of hydrangea that grows in Tibet and Nepal. More recent studies suggest that halofuginone, ...
New method to examine batteries -- MRI from the inside
There is an ever-increasing need for advanced batteries for portable electronics, such as phones, cameras, and music players, but also to power electric vehicles and to facilitate the distribution and storage of energy derived ...
Injured boomers beware: Know when to see doctor
(AP) -- It happened to nurse Jane Byron years after an in-line skating fall, business owner Haralee Weintraub while doing "men's" push-ups, and avid cyclist Gene Wilberg while lifting a heavy box.
A mitosis mystery solved: How chromosomes align perfectly in a dividing cell
Although the process of mitotic cell division has been studied intensely for more than 50 years, Whitehead Institute researchers have only now solved the mystery of how cells correctly align their chromosomes during symmetric ...
