Prisms

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Iain D Gilchrist - One of the best experts on this subject based on the ideXlab platform.

  • a single blinded randomised controlled pilot trial of prism adaptation for improving self care in stroke patients with neglect
    Neuropsychological Rehabilitation, 2010
    Co-Authors: Ailie Turton, Kelly Oleary, Judith Gabb, Rebecca Woodward, Iain D Gilchrist
    Abstract:

    Prism adaptation has been shown to alleviate the symptoms of unilateral spatial neglect following stroke in single case and small group studies. The purposes of this single blinded pilot randomised controlled trial were to determine the feasibility of delivering prism adaptation treatment in a clinically valid sample and to assess its impact on self-care. Thirty seven right hemisphere stroke patients with unilateral spatial neglect were randomised into either prism adaptation (using 10 dioptre, 6 degree Prisms) or sham treatment (using plain glasses) groups. Treatment was delivered each weekday for two weeks. Pointing accuracy, without vision of the finger, was recorded each day before treatment. Outcome was measured, by blinded assessors, four days and eight weeks after the end of treatment using the Catherine Bergego Scale (CBS) and the conventional neuropsychological tests from the Behavioural Inattention Test (BIT). Thirty four patients received treatment: 16 with Prisms, 18 sham. Mean compliance was ...

  • a single blinded randomised controlled pilot trial of prism adaptation for improving self care in stroke patients with neglect
    Neuropsychological Rehabilitation, 2010
    Co-Authors: Ailie Turton, Kelly Oleary, Judith Gabb, Rebecca Woodward, Iain D Gilchrist
    Abstract:

    Prism adaptation has been shown to alleviate the symptoms of unilateral spatial neglect following stroke in single case and small group studies. The purposes of this single blinded pilot randomised controlled trial were to determine the feasibility of delivering prism adaptation treatment in a clinically valid sample and to assess its impact on self-care. Thirty seven right hemisphere stroke patients with unilateral spatial neglect were randomised into either prism adaptation (using 10 dioptre, 6 degree Prisms) or sham treatment (using plain glasses) groups. Treatment was delivered each weekday for two weeks. Pointing accuracy, without vision of the finger, was recorded each day before treatment. Outcome was measured, by blinded assessors, four days and eight weeks after the end of treatment using the Catherine Bergego Scale (CBS) and the conventional neuropsychological tests from the Behavioural Inattention Test (BIT). Thirty four patients received treatment: 16 with Prisms, 18 sham. Mean compliance was 99% and 97%, respectively. Over the treatment days only the prism treated group showed increased leftward bias in open loop pointing to targets on a touch screen. However, despite the group level changes in pointing behaviour no overall effect of the treatment on self-care or BIT were found.

Michael J Solomon - One of the best experts on this subject based on the ideXlab platform.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    Soft Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air–water interface. The edge length of the equilateral triangle face is 120 μm, and the thickness of the prism is varied between 2 and 20 μm. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either tip-to-tip or tip-to-midpoint edge configurations; for pairs of Prisms of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air–water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the prism that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how prism bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    arXiv: Soft Condensed Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air-water interface. The edge length of the equilateral triangle face is 120 $\mu m$, and the thickness of the prism is varied between 2 and 20 $\mu m$. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either a tip-to-tip or tip-to-midpoint edge configurations; for pairs of particles of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air-water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the particle that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how particle bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

Deshpreet Bedi - One of the best experts on this subject based on the ideXlab platform.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    Soft Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air–water interface. The edge length of the equilateral triangle face is 120 μm, and the thickness of the prism is varied between 2 and 20 μm. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either tip-to-tip or tip-to-midpoint edge configurations; for pairs of Prisms of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air–water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the prism that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how prism bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    arXiv: Soft Condensed Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air-water interface. The edge length of the equilateral triangle face is 120 $\mu m$, and the thickness of the prism is varied between 2 and 20 $\mu m$. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either a tip-to-tip or tip-to-midpoint edge configurations; for pairs of particles of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air-water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the particle that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how particle bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

Shangnan Zhou - One of the best experts on this subject based on the ideXlab platform.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    Soft Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air–water interface. The edge length of the equilateral triangle face is 120 μm, and the thickness of the prism is varied between 2 and 20 μm. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either tip-to-tip or tip-to-midpoint edge configurations; for pairs of Prisms of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air–water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the prism that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how prism bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    arXiv: Soft Condensed Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air-water interface. The edge length of the equilateral triangle face is 120 $\mu m$, and the thickness of the prism is varied between 2 and 20 $\mu m$. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either a tip-to-tip or tip-to-midpoint edge configurations; for pairs of particles of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air-water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the particle that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how particle bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

Peijun Zhu - One of the best experts on this subject based on the ideXlab platform.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    Soft Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air–water interface. The edge length of the equilateral triangle face is 120 μm, and the thickness of the prism is varied between 2 and 20 μm. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either tip-to-tip or tip-to-midpoint edge configurations; for pairs of Prisms of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air–water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the prism that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how prism bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.

  • capillary driven binding of thin triangular Prisms at fluid interfaces
    arXiv: Soft Condensed Matter, 2018
    Co-Authors: Joseph A Ferrar, Deshpreet Bedi, Shangnan Zhou, Peijun Zhu, Xiaoming Mao, Michael J Solomon
    Abstract:

    We observe capillary-driven binding between thin, equilateral triangular Prisms at a flat air-water interface. The edge length of the equilateral triangle face is 120 $\mu m$, and the thickness of the prism is varied between 2 and 20 $\mu m$. For thickness to length (T/L) ratios of 1/10 or less, pairs of triangles preferentially bind in either a tip-to-tip or tip-to-midpoint edge configurations; for pairs of particles of thickness T/L = 1/5, the tip of one triangle binds to any position along the other triangle's edge. The distinct binding configurations for small T/L ratios result from physical bowing of the Prisms, a property that arises during their fabrication. When bowed Prisms are placed at the air-water interface, two distinct polarity states arise: Prisms either sit with their center of mass above or below the interface. The interface pins to the edge of the prism's concave face, resulting in an interface profile that is similar to that of a capillary hexapole, but with important deviations close to the particle that enable directed binding. We present corresponding theoretical and numerical analysis of the capillary interactions between these Prisms and show how particle bowing and contact-line pinning yield a capillary hexapole-like interaction that results in the two sets of distinct, highly-directional binding events. Prisms of all T/L ratios self-assemble into space-spanning open networks; the results suggest design parameters for the fabrication of building blocks of ordered open structures such as the Kagome lattice.