摘要:
According to the present invention, there is provided a recording medium comprising a substrate, a platinum layer formed on the substrate and having a (111) plane preferentially oriented, and a fullerene single crystal thin film formed on the platinum layer, and configured to be a recording layer, wherein an average value of average surface roughness Ra's with respect to four or more visual fields measured by using an atomic force microscope in a surface of the fullerene thin film is 0.5 nm or less.
摘要:
Apparatus, systems and methods for implementing molecular quantum memory are disclosed. In one implementation, a source of polarized electrons (104) and a source of oppositely polarized electrons (106) maybe selectively coupled to at least one probe tip (117, 119) of a probe assembly. The at least one probe tip may, in turn, be electrically coupled to a molecule so that information may be written to the molecule using a time- varying polarized electron current selectively derived from the polarized electron current sources.
摘要:
Probe-based methods for patterning a surface of a material are described. In particular, high resolution patterning of molecules on a surface of a material, such as nano-scale patterns with feature sizes of less than 30 nanometers, are described. In one aspect, a method for patterning a surface of a material includes providing a material having a polymer film. A heated, nano-scale dimensioned probe is then used to desorb molecules upon interacting with the film. The film includes a network of molecules (such as molecular glasses) which are cross-linked via intermolecular (noncovalent) bonds, such as hydrogen bonds.
摘要:
A nano data writing and reading apparatus using a cantilever structure includes a cantilever formed by patterning a deposition material deposited on a sacrificial substrate, a probe formed at a front end portion of one surface of the cantilever and formed simultaneously with the cantilever as the deposition material is filled in a probe groove pattern formed on the sacrificial substrate when the deposition material is deposited on the sacrificial substrate, a heater formed of polycrystalline silicon at the cantilever, for heating the probe, a data sensing unit formed at the cantilever and sensing data written on media, a signal connection pad connected to the data sensing unit and formed at the cantilever to provide an electrical connection with an external signal line, a signal transfer circuit unit connected to the signal connection pad, for controlling writing and reading of data on and from the media, and a bonding unit allowing the cantilever to be supported at the signal transfer circuit unit and providing a passage for an electrical connection between the signal connection pad and the signal transfer circuit unit. Accordingly, the cantilever and the probe can be precisely formed by a molding technique through the removal of a sacrificial substrate and are formed of a deposition material such as a silicon nitride material, thereby remarkably reducing variations in a thickness of the cantilever and improving the durability of the probe. Also, because a bonding process with a glass wafer for fabricating the cantilever structure is not required, the process is facilitated and a fabrication coast is greatly reduced.
摘要:
An information recording/reading head (110), wherein the probes thereof are disposed so that, where the positions of the tip parts of the probes are A, B, C, and D, a parallelogram having straight lines AB and CD parallel with each other and straight lines AC and BD parallel with each other can be formed, and where the ratio of the length of the straight line AB to the length of the straight line AC is η and the height of the parallelogram when the straight line AC is taken as the bottom side thereof is H, the requirement of H = η·P can be satisfied.
摘要:
The invention relates to a data recording device (1) comprising microtips (3) and a recording medium (2). The recording medium (2) comprises a substrate (4) with a preferably-carbon resistive layer (5) disposed thereon, said resistive layer (5) being covered with an active layer (6). According to the invention, the aforementioned active layer (6) can pass from a first electrical resistivity value to a second electrical resistivity value when a voltage is applied between the microtips (3) and a counter electrode. The inventive data recording device (1) also comprises at least one carbon resistive element (7) which is disposed between the active layer (6) and the microtips (3).
摘要:
Read/write components for AFM-based data storage devices are provided. In particular embodiments, a read/write component (30, 45, 50, 65, 80) comprises lever means (31, 51, 66, 82) and a support structure (32, 52, 67, 81), the lever means being connected to the support structure for substantially pivotal movement. The lever means (31, 51, 66, 82) provides first and second current paths between a pair of electrical supply lines (R, C) on the support structure via which the lever means can be connected in use to power supply means operable in a write mode and a read mode. A write-mode heater (36, 47, 56, 73) is provided on the lever means in the first current path, and a read/write tip (37, 57, 74, 84) is provided on the write-mode heater. A read-mode heater (39, 46, 58, 75, 83) is provided on the lever means in the second current path. Decoupling means (38a, 38b, 40a, 40b, 60, 61, 77a, 77b, 78a, 78b) is arranged to inhibit current flow to the write-mode heater via the first current path in use when the power supply means is operated in the read mode. The component, with separate write and read-mode heaters, can thus be addressed in both the write and read modes via a single pair of supply lines. Other embodiments provide read/write components (100) employing a thermal decoupling mechanism, and read/write components (80) where read-sensing is performed by a proximity sensing arrangement between the lever means and the support structure. Sensing apparatus (115) for atomic force microscopes is also provided where tip movement can be detected via similar proximity sensing arrangements.
摘要:
The invention relates to a data-recording device comprising conductive microtips and to the production method thereof. According to the invention, the microtip (1) comprises one end (2) which is intended to be brought into electrical contact with a recording medium (3). Moreover, the microtip (1) comprises a longitudinal conducting core (4) having an essentially constant cross-section. In addition, the microtip (1) is surrounded by a sheath (5) of non-conducting material, such that the free ends of the core (4) and the sheath (5) are level at the end (2) of the microtip (1). The cross-section of the sheath (5) can diminish towards the end (2) of the microtip (1), e.g. such as to form a truncated-cone-shaped part. The core (4) can comprise a carbon nanotube. Furthermore, a multitude of microtips (1) can be disposed in the form of a network, the ends (2) thereof generating an essentially-flat common surface. The inventive method comprises an abrasion step.
摘要:
A recording / reproducing head (100) for performing at least one of a record operation of recording information onto a dielectric recording medium (20) and a reproduction operation of reproducing the information from the dielectric recording medium (20), the recording / reproducing head (100) provided with: a support member (130) which extends in a longitudinal direction; and a projection portion (110) which is mounted on the support member (130) such that a tip of the projection portion (110) faces the dielectric recording medium (20), the projection portion (110) having a ridge-line (110L) on the tip, the projection portion (110) being capable of contacting the dielectric recording medium (20) at one point (111) on the ridge-line (110L).