Ultrahigh density data storage in an organic film with a scanning tunneling microscope

1999 ◽  
Vol 17 (6) ◽  
pp. 2467 ◽  
Author(s):  
S. M. Hou ◽  
X. Y. Zhao ◽  
C. Yang ◽  
Z. Q. Xue ◽  
W. J. Yang ◽  
...  
Keyword(s):  
Data Storage ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Organic Film ◽  
Density Data ◽  
Tunneling Microscope ◽  
Ultrahigh Density

Thin Film of Conjugated Schiff-Base as Ultrahigh Density Data Storage Material

1997 ◽  
Vol 488 ◽  
Author(s):  
W. J. Yang ◽  
Q. C. Yang ◽  
H. G. Lu ◽  
H. Y. Chen ◽  
S. M. Hou ◽  
...  
Keyword(s):  
Data Storage ◽  
Scanning Tunneling Microscope ◽  
Quantum Chemical ◽  
Scanning Tunneling ◽  
Chemical Calculation ◽  
Storage Medium ◽  
Storage Material ◽  
Density Data ◽  
Tunneling Microscope ◽  
Ultrahigh Density

AbstractN-(3-nitrobenzylidene)-p-phenylenediamine (NBPDA) was used as ultrahigh density data storage medium by scanning tunneling microscope (STM) technique. Data marks of 1.4nm in diameter were written by applying voltage pulses between the STM tip and the substrate. Structures of single crystal and thin films were characterized by IR, UV–Vis, XRD, STM and verified by DFT quantum chemical calculation.

Donor–acceptor π-conjugated aggregation-induced emission molecules for reversible nanometer-scale data storage

2016 ◽  
Vol 4 (23) ◽  
pp. 5363-5369 ◽  
Author(s):  
Shuhong Li ◽  
Yanli Shang ◽  
Lifang Wang ◽  
Ryan T. K. Kwok ◽  
Ben Zhong Tang
Keyword(s):  
Thin Film ◽  
Data Storage ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Nanometer Scale ◽  
Tunneling Microscope ◽  
Aggregation Induced Emission ◽  
Donor Acceptor ◽  
Scale Data

Donor–acceptor π-conjugated aggregation-induced emission molecule demonstrates reversible data storage on its thin film by scanning tunneling microscope.

Study of an Organic Fluorescent Material for Nanoscale Data Storage by Scanning Tunneling Microscope

2013 ◽  
Vol 17 (7) ◽  
pp. 771-774 ◽  
Author(s):  
Ying Ma ◽  
Qing Wang ◽  
Fangxiao Shi ◽  
Xiumei Wang ◽  
Yanli Shang ◽  
...  
Keyword(s):  
Data Storage ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Fluorescent Material

Scanning tunneling microscopy of E. coli RNA polymerase deposited onto an Au substrate by an electrochemical process

1991 ◽  
Vol 49 ◽  
pp. 378-379
Author(s):  
Rebecca W. Keller ◽  
Carlos Bustamante ◽  
David Bear
Keyword(s):  
Scanning Tunneling Microscope ◽  
Biological Sample ◽  
Substrate Surface ◽  
Electrochemical Process ◽  
Atomic Resolution ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Tunneling Microscope ◽  
E Coli ◽  
Preparation Techniques

Under ideal conditions, the Scanning Tunneling Microscope (STM) can create atomic resolution images of different kinds of samples. The STM can also be operated in a variety of non-vacuum environments. Because of its potentially high resolution and flexibility of operation, it is now being applied to image biological systems. Several groups have communicated the imaging of double and single stranded DNA.However, reproducibility is still the main problem with most STM results on biological samples. One source of irreproducibility is unreliable sample preparation techniques. Traditional deposition methods used in electron microscopy, such as glow discharge and spreading techniques, do not appear to work with STM. It seems that these techniques do not fix the biological sample strongly enough to the substrate surface. There is now evidence that there are strong forces between the STM tip and the sample and, unless the sample is strongly bound to the surface, it can be swept aside by the tip.

STM of freeze-fracture replicas: Problems and promises

1993 ◽  
Vol 51 ◽  
pp. 68-69
Author(s):  
J. T. Woodward ◽  
J. A. N. Zasadzinski
Keyword(s):  
Scanning Tunneling Microscope ◽  
Organic Materials ◽  
Freeze Fracture ◽  
Atomic Resolution ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Molecular Scale ◽  
Organic Surfaces ◽  
Metal Layers ◽  
Conductive Surfaces

The Scanning Tunneling Microscope (STM) offers exciting new ways of imaging surfaces of biological or organic materials with resolution to the sub-molecular scale. Rigid, conductive surfaces can readily be imaged with the STM with atomic resolution. Unfortunately, organic surfaces are neither sufficiently conductive or rigid enough to be examined directly with the STM. At present, nonconductive surfaces can be examined in two ways: 1) Using the AFM, which measures the deflection of a weak spring as it is dragged across the surface, or 2) coating or replicating non-conductive surfaces with metal layers so as to make them conductive, then imaging with the STM. However, we have found that the conventional freeze-fracture technique, while extremely useful for imaging bulk organic materials with STM, must be modified considerably for optimal use in the STM.

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