摘要:
The present invention relates a method of producing a data storage medium comprising the steps of: a) coating a layer (2) comprising a polymer material onto at least a part of a template surface (1 ) thereby to obtain a modified template surface (2'); b) clamping the modified template surface (2') produced in step (a) with a target surface (3) thereby to obtain an assembly; and c) introducing a liquid (4) to an environment of the assembly obtained in step (b) thereby to transfer the layer (2) comprising the polymer material of the modified template surface (2') onto at ieast an adjacent region on the target surface (3).
摘要:
The invention is directed to a scanning probe lithography (or SPL) apparatus (100). The apparatus comprises physical probes (10, 20, 30) having different tip shapes (12, 22, 32). The shapes actually differ such as to be able to form different patterns (P10, P20, and P30) in the surface thickness (M20) of a material (M10). Therefore, the diversity of patterns obtainable during a raster scan of the material surface is increased. Typically, the idea is to use tips with specific shape to imprint their (nano)shapes (or characters) in a polymer, whereby a complex structure can be created in one imprint step. Throughput of SPL is accordingly improved. Most advantageously, the probes are independently actuated, e.g. bydedicated circuitry (101, 103), in order to further increase the diversity of patterns. Character probe lithography is thereby instated.
摘要:
The invention concerns a method for patterning a surface of a material. A substrate having a polymer film thereon is provided. The polymer is a selectively reactive polymer (e.g. thermodynamically unstable): it is able to unzip upon suitable stimulation. A probe is used to create patterns on the film. During the patterning, the film is locally stimulated for unzipping polymer chains. Hence, a basic idea is to provide a stimulus to the polymeric material, which in turn spontaneously decomposes e.g. into volatile constituents. For example, the film is thermally stimulated in order to break a single bond in a polymer chain, which is sufficient to trigger the decomposition of the entire polymer chain.
摘要:
The present invention concerns micromechanical signal processing system comprising an oscillating member (40) designed to oscillate at a frequency f3, a micromechanical pump oscillator (42) being driven so as to oscillate at a frequency fp, with fp > f3, and a non-linear coupling element (44) to couple said micromechanical pump oscillator (42) to said oscillating member (40). These elements are arranged such that energy from the micromechanical pump oscillator (42) is transferred via said non-linear coupling element (44) into said oscillating member (40) to compensate for its losses if said oscillating member oscillates at the frequency f3.
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:
The present invention relates to a device for forming topographic features on a surface of a polymer layer comprising: a polymer layer (1 ); a substrate (2) comprising a conductor, a first surface (1 a) of the polymer layer (1 ) being provided on the substrate (2); and at least one electrode (3) which, when the device is in use, interacts with a second surface (1 b) of the polymer layer (1 ), wherein, when in use, the device is operable to apply a first electrical potential (P1 ) to the at least one electrode (3) relative to the substrate (2), thereby to cause a protrusion (4) to be formed on the second surface (1 b) of the polymer layer (1 ).
摘要:
The invention concerns a method for scanning a surface (52) of a material (50) with a scanning probe microscope or SPM (10), the SPM having a cantilever sensor (100) configured to exhibit distinct spring behaviors (C, C k ), the method comprising: - operating the SPM in contact mode, whereby the sensor is scanned on the material surface and a first spring behavior (C) of the sensor (e.g. a fundamental mode of flexure thereof) is excited by deflection of the sensor by the material surface; and - exciting with excitation means a second spring behavior (C k ) of the sensor at a resonance frequency thereof (e.g. one or more higher-order resonant modes) of the cantilever sensor to modulate an interaction of the sensor and the material surface and thereby reduce the wearing of the material surface.
摘要:
The present invention relates to a device for forming topographic features on a surface of a polymer layer comprising: a polymer layer (1 ); a substrate (2) comprising a conductor, a first surface (1 a) of the polymer layer (1 ) being provided on the substrate (2); and at least one electrode (3) which, when the device is in use, interacts with a second surface (1 b) of the polymer layer (1 ), wherein, when in use, the device is operable to apply a first electrical potential (P1 ) to the at least one electrode (3) relative to the substrate (2), thereby to cause a protrusion (4) to be formed on the second surface (1 b) of the polymer layer (1 ).
摘要:
An improvement to a phase controlled mechanical oscillator (111) consists of a balancing network (150) which generates a feedback signal from two different input signals with adjustable weights. One of these input signals is directly derived from the oscillator signal, the other is derived from a phase tracking loop (140). Using the balancing network, adjustments can be made to adapt the feedback to the mechanical properties, in particular to the Q factor, of the oscillator. In a preferred embodiment, all major components are working at an intermediate frequency level, generated by mixing the oscillator frequency with a reference frequency. As a major advantage of this (heterodyne) mixing, the bandwidth of any applied frequency detector can be narrowed, thus increasing the achievable signal-to-noise ratio.
摘要:
The invention concerns a method for scanning a surface (52) of a material (50) with a scanning probe microscope or SPM (10), the SPM having a cantilever sensor (100) configured to exhibit distinct spring behaviors (C, Ck), the method comprising: - operating the SPM in contact mode, whereby the sensor is scanned on the material surface and a first spring behavior (C) of the sensor (e.g. a fundamental mode of flexure thereof) is excited by deflection of the sensor by the material surface; and - exciting with excitation means a second spring behavior (Ck) of the sensor at a resonance frequency thereof (e.g. one or more higher-order resonant modes) of the cantilever sensor to modulate an interaction of the sensor and the material surface and thereby reduce the wearing of the material surface.