Abstract: The present invention is directed toward methods for incorporating low work function metals and salts of such metals into carbon nanotubes for use as field emitting materials. The present invention is also directed toward field emission devices, and associated components, comprising treated carbon nanotubes that have, incorporated into them, low work function metals and/or metal salts, and methods for making same. The treatments of the carbon nanotubes with the low work function metals and/or metal salts serve to improve their field emission properties relative to untreated carbon nanotubes when employed as a cathode material in field emission devices.

Abstract: A thin buffer layer is used to coat on the multi-filament wrapped string to fill the gaps. The polymers of the buffer-layer coating have a high melt-flow (low viscosity) during coating process to fill all the gaps between the filaments, and the filaments are fixed by the coatings onto base core materials.

Abstract: Very low loading of impact modifier less than 4% can significantly improve elongation and impact strength of N6/clay nanocomposites and keep the high tensile strength and modulus. This rubber modified nylon nanocomposites have potential applications in fabricating high-strength fibers for textile industry, coatings for strings or polymer parts, and packaging industry.

Abstract: Improved mechanical properties of both clay and carbon nanotube (CNT)-reinforced polymer matrix nanocomposites are obtained by dispersing those nanoparticles using a microfluidic process. Well-dispersed particles are obtained that sufficiently improve mechanical properties of the nanocomposites, such as flexural strength and modulus.

Abstract: A carbon nanotube layer for a field emission cathode where individual carbon nanotubes or small groups of carbon nanotubes that stick out from the surface more than the rest of the layer are avoided. Electron fields will concentrate on these sharp points, creating an enhanced image on the phosphor, resulting in a more luminous spot than the surroundings. Activation processes further free such carbon nanotubes or groups of carbon nanotubes sticking out from the surface, exasperating the problem.

Abstract: A method for forming cathodes for use in field emission devices using nanoparticles, such as carbon nanotubes (CNTs), is disclosed. The CNT layer comprises the electron emitting material on the surface of the cathode. Using the methods of the present invention, the density of the deposited CNTs may be modulated by forming emitter islands on the surface of the cathode. The size and distribution of the CNT emitter islands serve to optimize the field emission properties of the resulting CNT layer. In one embodiment, the CNT emitter islands are formed using a screen-printing deposition method. The present invention may be practiced without further process steps after deposition which activate or align the carbon nanotubes for field emission.

Abstract: Improved mechanical properties of both clay and carbon nanotube (CNT)-reinforced polymer matrix nanocomposites are obtained by pre-treating nanoparticles and polymer pellets prior to a melt compounding process. The nanoparticles are coated onto the surface of the polymer pellets by a ball-milling process. The nanoparticles thin film is formed onto the surface of the polymer pellets after the mixture is ground for a certain time.

Abstract: Particles, which may include nanoparticles, are mixed with carbon nanotubes and deposited on a substrate to form a cold cathode. The particles enhance the field emission characteristics of the carbon nanotubes. An additional activation step may be performed on the deposited carbon nanotube mixture to further enhance the emission of electrons.

Abstract: A nylon 11 composite system has significantly improved flexural modulus while keeping or even increasing the impact strength. This composite system may comprise a nylon 11/filter/modifier. The flexural modulus and impact strength increases over 150% and 80%, respectively compared with neat nylon 11. The “ball” portion of badminton shuttlecocks made by this type of composite may more closely duplicate the flight capabilities of natural duck feather shuttlecocks than nylon 11. The nylon 11/filler/modifier ay allow for a very close duplication of the restoration effects of shuttlecocks made from feathers therefore providing a product which can be a one for one aerodynamic performance substitution for the natural product (feathers).

Abstract: Particles, which may include nanoparticles, are mixed with carbon nanotubes and deposited on a substrate to form a cold cathode. The particles enhance the field emission characteristics of the carbon nanotubes. An additional activation step may be performed on the deposited carbon nanotube mixture to further enhance the emission of electrons.

Abstract: An industrial scale method for patterning nanoparticle emitters for use as cathodes in a display device is disclosed. The low temperature method can be practiced in high volume applications, with good uniformity of the resulting display device. The method steps involve deposition of CNT emitter material over an entire surface of a prefabricated composite structure, and subsequent removal of the CNT emitter material from unwanted portions of the surface using physical methods.

Abstract: A phosphor for use in displays is a mixture of phosphors and carbon nanotubes. The phosphor screen has improved electrical and thermal conductivity.

Abstract: A method for forming a field emission cathode device is disclosed using a peelable photoresist with standard photolithography processes for patterning a deposition mask, except that the peelable photoresist can be peeled away in dry form. The method offers standard photoresist accuracy with the advantage of high patterning resolution for producing carbon nanotube (CNT) field emitter displays. Example methods using a single peelable photoresist layer, and using two distinct layers of photoresist and peelable film, are presented. Since the method does not require wet processes after CNT deposition, it ensures enhanced CNT emitter performance. In addition, an activation process that liberates CNTs can be performed just before a tape lamination and peeling process step. In this manner, all superfluous nanoparticle material remains confined between the tape and photoresist films, which are removed together and properly discarded.

Abstract: The present invention is directed toward methods for incorporating low work function metals and salts of such metals into carbon nanotubes for use as field emitting materials. The present invention is also directed toward field emission devices, and associated components, comprising treated carbon nanotubes that have, incorporated into them, low work function metals and/or metal salts, and methods for making same. The treatments of the carbon nanotubes with the low work function metals and/or metal salts serve to improve their field emission properties relative to untreated carbon nanotubes when employed as a cathode material in field emission devices.

Abstract: The present invention is directed towards metallized carbon nanotubes, methods for making metallized carbon nanotubes using an electroless plating technique, methods for dispensing metallized carbon nanotubes onto a substrate. The present invention is also directed towards cold cathode field emitting materials comprising metallized carbon nanotubes, and methods of using metallized carbon nanotubes as cold cathode field emitters.

Abstract: The present invention is directed toward methods for incorporating low work function metals and salts of such metals into carbon nanotubes for use as field emitting materials. The present invention is also directed toward field emission devices, and associated components, comprising treated carbon nanotubes that have, incorporated into them, low work function metals and/or metal salts, and methods for making same. The treatments of the carbon nanotubes with the low work function metals and/or metal salts serve to improve their field emission properties relative to untreated carbon nanotubes when employed as a cathode material in field emission devices.

Abstract: The present invention is directed toward cathodes and cathode materials comprising carbon nanotubes (CNTs) and particles. The present invention is also directed toward field emission devices comprising a cathode of the present invention, as well as methods for making these cathodes. In some embodiments, the cathode of the present invention is used in a field emission display. The invention also comprises a method of depositing a layer of CNTs and particles onto a substrate to form a cathode of the present invention, as well as a method of controlling the density of CNTs used in this mixed layer in an effort to optimize the field emission properties of the resulting layer for field emission display applications.

Abstract: The present invention is directed towards metallized carbon nanotubes, methods for making metallized carbon nanotubes using an electroless plating technique, methods for dispensing metallized carbon nanotubes onto a substrate, and methods for aligning magnetically-active metallized carbon nanotubes. The present invention is also directed towards cold cathode field emitting materials comprising metallized carbon nanotubes, and methods of using metallized carbon nanotubes as cold cathode field emitters.

Abstract: Substantially enhanced field emission properties are achieved by using a process of covering a non-adhesive material (for example, paper, foam sheet, or roller) over the surface of the CNTs, pressing the material using a certain force, and removing the material.

Abstract: Field emission properties may also be improved by coating the carbon materials with metal oxides. These metal oxides contribute to lowering the work function of the carbon material as well as improve the life of the field emission properties of the carbon materials, especially under high current density operation.