Abstract: A method of forming a patterned media includes constraining growth of magnetic grains in a down-track direction without constraining the growth in a radial direction to cause the magnetic grains to align in rows extending in the radial direction. The patterned media may allow for data track radial width to be defined independent of grain size.

Abstract: Apparatus and methods relating to DNA sequencing are provided. In one embodiment, a DNA sequencing device includes a nanochannel having a width that is approximately 0.3 nm to approximately 20 nm. A pair of electrodes having portions exposed to the nanochannel may form a tunneling current electrode (TCE) with an electrode gap of approximately 0.1 nm to approximately 2 nm, and more particularly about 0.3 nm to about 1 nm. In one embodiment, at least one of the pair of electrodes is formed as a suspended electrode. An actuator may be associated with the suspended electrode to displace it relative to the other electrode. In various embodiments, the nanochannel and/or the electrodes may be formed using thermal reflow processes to reduce the size of such features.

Abstract: A DNA sequencing device and related methods, wherein the device includes a substrate, a nanochannel formed in the substrate, a first electrode positioned on a first side of the nanochannel, and a second electrode. The second electrode is positioned on a second side of the nanochannel opposite the first electrode and is spaced apart from the first electrode to form an electrode gap that is exposed in the nanochannel. At least a portion of first electrode is movable relative to the second electrode to decrease a size of the electrode gap.

Abstract: A DNA sequencing device, and related methods, include a nanochannel sized to receive a DNA strand, a first electrode member exposed within the nanochannel, and a second electrode member exposed within the nanochannel and spaced apart from the first electrode to form an electrode gap. The second electrode member has a wedge shaped profile, and the first and second electrode members are operable to detect a change in electronic signal as the DNA strand passes through the electrode gap.

Abstract: A DNA sequencing device, and related methods, include a nanopore or nanochannel structure, and a nanoelectrode. The nanoelectrode includes electrode members having free ends exposed within the nanopore or nanochannel structure, an electrode gap defined between of the free ends, and plated portions formed on the free ends to provide a reduced sized for the electrode gap.

Abstract: A DNA sequencing device and related methods, wherein the device includes a substrate, a nanochannel formed in the substrate, a first electrode positioned on a first side of the nanochannel, and a second electrode. The second electrode is positioned on a second side of the nanochannel opposite the first electrode, and is spaced apart from the first electrode to form an electrode gap that is exposed in the nanochannel. At least a portion of first electrode is movable relative to the second electrode to decrease a size of the electrode gap.

Abstract: A DNA sequencing device and methods of making. The device includes a pair of electrodes having a spacing of no greater than about 2 nm, the electrodes being exposed within a nanopore to measure a DNA strand passing through the nanopore. The device can be made by depositing a conductive layer over a sacrificial channel and then removing the sacrificial channel to form the electrode gap.

Abstract: Apparatus and methods to sequence DNA. A DNA sequencing device includes a passage, a first electrode, and a second electrode. The passage has a width and a length. The first and second electrodes are exposed within the passage and spaced apart from each other to form an electrode gap. The electrode gap is no greater than about 2 nm. The DNA sequencing device is operable to measure with the first and second electrodes a change in electronic signal in response to nucleotides of a DNA strand passing through the electrode gap.

Abstract: A DNA sequencing device, and related methods, include a nanopore or nanochannel structure, and a nanoelectrode. The nanoelectrode includes electrode members having free ends exposed within the nanopore or nanochannel structure, an electrode gap defined between of the free ends, and plated portions formed on the free ends to provide a reduced sized for the electrode gap.

Abstract: A DNA sequencing device, and related methods, include a nanochannel sized to receive a DNA strand, a first electrode member exposed within the nanochannel, and a second electrode member exposed within the nanochannel and spaced apart from the first electrode to form an electrode gap. The second electrode member has a wedge shaped profile, and the first and second electrode members are operable to detect a change in electronic signal as the DNA strand passes through the electrode gap.

Abstract: A DNA sequencing device includes a first layer having a nanochannel formed therein, and a pair of electrodes arranged vertically relative to each other and spaced apart to define an electrode gap. The electrode gap is exposed in the nanochannel, and the electrode gap is in the range of about 0.3 nm to about 2 nm.

Abstract: A data storage medium may have increased data capacity by being configured with first and second patterned pedestals that are each separated from a substrate by a seed layer. A first polymer brush layer can be positioned between the first and second patterned pedestals atop the seed layer and a second polymer brush layer may be positioned atop each patterned pedestal. The first and second polymer brush layers may be chemically different and a block copolymer can be deposited to self-assemble into separate magnetic domains aligned with either the first or second polymer brush layers.

Abstract: Provided herein is a method, including creating a first layer over a substrate, wherein the first layer is configured for directed self-assembly of a block copolymer thereover; creating a continuous second layer over the first layer by directed self-assembly of a block copolymer, wherein the second layer is also configured for directed self-assembly of a block copolymer thereover; and creating a third layer over the continuous second layer by directed self-assembly of a block copolymer. Also provided is an apparatus, comprising a continuous first layer comprising a thin film of a first, phase-separated block copolymer, wherein the first layer comprises a first chemoepitaxial template configured for directed self-assembly of a block copolymer thereon; and a second layer on the first layer, wherein the second layer comprises a thin film of a second, phase-separated block copolymer.

Abstract: A data storage medium may have increased data capacity by being configured with first and second patterned pedestals that are each separated from a substrate by a seed layer. A first polymer brush layer can be positioned between the first and second patterned pedestals atop the seed layer and a second polymer brush layer may be positioned atop each patterned pedestal. The first and second polymer brush layers may be chemically different and a block copolymer can be deposited to self-assemble into separate magnetic domains aligned with either the first or second polymer brush layers.

Abstract: A DNA sequencing device, and related method, which include a nanopore having a maximum width dimension of no greater than about 50 nm, and a pair of electrodes having a spacing of no greater than about 2 nm, the electrodes being exposed within the nanopore to measure a DNA strand passing through the nanopore.

Abstract: A nanochannel DNA sequencing device and related methods of fabrication and of DNA sequencing are provided. In one example, a device may include a nanochannel having a width of no greater than about 2 nm and a height no greater than 1.5 times the width. The device may further include a pair of electrodes having a width of no greater than about 10 nm, the electrodes being exposed within the nanochannel to measure electronical characteristics of a DNA strand passing through the nanochannel. In one example, the nanochannel may be formed using lithography techniques, such as sidewall lithography.

Abstract: Apparatus and methods relating to DNA sequencing are provided. In one embodiment, a DNA sequencing device includes a nanochannel having a width that is approximately 0.3 nm to approximately 20 nm. A pair of electrodes having portions exposed to the nanochannel may form a tunneling current electrode (TCE) with an electrode gap of approximately 0.1 nm to approximately 2 nm, and more particularly about 0.3 nm to about 1 nm. In one embodiment, at least one of the pair of electrodes is formed as a suspended electrode. An actuator may be associated with the suspended electrode to displace it relative to the other electrode. In various embodiments, the nanochannel and/or the electrodes may be formed using thermal reflow processes to reduce the size of such features.

Abstract: A DNA sequencing device and related methods, wherein the device includes a substrate, a nanochannel formed in the substrate, a first electrode positioned on a first side of the nanochannel, and a second electrode. The second electrode is positioned on a second side of the nanochannel opposite the first electrode, and is spaced apart from the first electrode to form an electrode gap that is exposed in the nanochannel. At least a portion of first electrode is movable relative to the second electrode to decrease a size of the electrode gap.

Abstract: A DNA sequencing device, and related methods, include a nanopore or nanochannel structure, and a nanoelectrode. The nanoelectrode includes electrode members having free ends exposed within the nanopore or nanochannel structure, an electrode gap defined between of the free ends, and plated portions formed on the free ends to provide a reduced sized for the electrode gap.

Abstract: A DNA sequencing device, and related methods, include a nanochannel sized to receive a DNA strand, a first electrode member exposed within the nanochannel, and a second electrode member exposed within the nanochannel and spaced apart from the first electrode to form an electrode gap. The second electrode member has a wedge shaped profile, and the first and second electrode members are operable to detect a change in electronic signal as the DNA strand passes through the electrode gap.