摘要:
A method of fabricating a photonic crystal or photonic band gap optical fiber comprises providing a preform that includes a plurality of holes in an outer diameter, wherein the holes extend from a first end of a preform to a second end of the preform, and forming at least one radially inwardly-extending slot within the preform such that the slot intersects at least some of the holes, wherein the slot does not intersect at least one hole. The method also includes establishing a first pressure in the holes intersected by the slot by introducing the first pressure to the slot, and establishing a second pressure in the at least one hole not intersected by the slot by introducing the second pressure to an end of the at least one hole not intersected by the slot. The method further includes drawing the preform into a fiber while independently controlling the first and second pressures.
摘要:
The invention relates to methods of making articles of semiconducting material and semiconducting material articles formed thereby, such as articles of semiconducting material that may be useful in making photovoltaic cells.
摘要:
Described herein are alkali-free, boroalumino silicate glasses exhibiting desirable physical and chemical properties for use as substrates in flat panel display devices, such as, active matrix liquid crystal displays (AMLCDs). In accordance with certain of its aspects, the glasses possess good dimensional stability as a function of temperature.
摘要:
A method of fabricating a photonic crystal or photonic band gap optical fiber comprises providing a preform that includes a plurality of holes in an outer diameter, wherein the holes extend from a first end of a preform to a second end of the preform, and forming at least one radially inwardly-extending slot within the preform such that the slot intersects at least some of the holes, wherein the slot does not intersect at least one hole. The method also includes establishing a first pressure in the holes intersected by the slot by introducing the first pressure to the slot, and establishing a second pressure in the at least one hole not intersected by the slot by introducing the second pressure to an end of the at least one hole not intersected by the slot. The method further includes drawing the preform into a fiber while independently controlling the first and second pressures.
摘要:
A method of measuring the shape of a glass sheet is provided. The method includes positioning the glass sheet in contact with a fluid and measuring the distance between a sensor and a surface of the glass sheet at a plurality of locations on the surface thereof. The method may further include deconvolving the shape of the glass sheet into at least one simple shape element, such as cylindrical or spherical, and may further include varying the temperature profile of an array of heaters in a glass manufacturing process based on the at least one shape element.
摘要:
A method of treating a sheet of semiconducting material comprises forming a sinterable first layer over each major surface of a sheet of semiconducting material, forming a second layer over each of the first layers to form a particle-coated semiconductor sheet, placing the particle-coated sheet between end members, heating the particle-coated sheet to a temperature effective to at least partially sinter the first layer and at least partially melt the semiconducting material, and cooling the particle-coated sheet to solidify the semiconducting material and form a treated sheet of semiconducting material.
摘要:
A method of coating an inner surface of a tubular workpiece includes immersing the tubular workpiece lengthwise into a liquid subphase, inserting a first end of a delivery tube into the tubular workpiece so as to bring a distal end surface of the delivery tube to within a predetermined distance from the liquid surface, dispensing a suspension of coating particles into the first delivery tube to form a monolayer of the coating particles on the liquid surface in an area of the liquid surface between the inner surface of the tubular workpiece and an outer surface of the first delivery tube, and withdrawing at least a portion of the tubular workpiece from the liquid subphase so as to form a coating of the coating particles on a portion of the inner surface of the workpiece.
摘要:
Methods for making and/or treating articles of semiconducting material are disclosed. In various methods, a first article of semiconducting material is provided, the first article of semiconducting material is heated sufficiently to melt the semiconducting material, and the melted semiconducting material is solidified in a direction substantially parallel to a shortest dimension of the melted article of semiconducting material. Articles of semiconducting materials made by methods described herein are also disclosed.
摘要:
The invention relates to methods of making articles of semiconducting material on a mold comprising semiconducting material and semiconducting material articles formed thereby, such as articles of semiconducting material that may be useful in making photovoltaic cells.
摘要:
A method of coating an inner surface of a tubular workpiece includes immersing the tubular workpiece lengthwise into a liquid subphase, inserting a first end of a delivery tube into the tubular workpiece so as to bring a distal end surface of the delivery tube to within a predetermined distance from the liquid surface, dispensing a suspension of coating particles into the first delivery tube to form a monolayer of the coating particles on the liquid surface in an area of the liquid surface between the inner surface of the tubular workpiece and an outer surface of the first delivery tube, and withdrawing at least a portion of the tubular workpiece from the liquid subphase so as to form a coating of the coating particles on a portion of the inner surface of the workpiece.