An electromagnetic wave suppression sheet includes an electromagnetic wave transmitting layer having conductivity and transparency; a suppression layer having transparency; a conductive mesh having openings formed by woven lines; and an adhesive layer having transparency in this order from an outer side toward an inner side. The openings of the conductive mesh have a region in which the suppression layer and the adhesive layer are in contact with each other. A method of manufacturing an electromagnetic wave suppression sheet includes steps of preparing a laminate including the suppression layer, and the conductive mesh disposed to be in contact with the suppression layer; and applying a pressure to the conductive mesh in a direction of the suppression layer.

A polymeric sandwich structure having enhanced thermal conductivity includes a first layer formed from a first polymer matrix and including a first fiber reinforcing sheet embedded within the first polymer matrix, a second layer formed from a second polymer matrix and including a second fiber reinforcing sheet embedded within the second polymer matrix, and a third layer disposed between the first and second layers, the third layer formed from a third polymer matrix having graphene nanoplatelets interspersed therein. Each of the first and second fiber reinforcing sheets is made of reinforcing fibers and includes a respective set of staggered discontinuous perforations formed therein, wherein each respective set of staggered discontinuous perforations defines a respective first plurality of reinforcing fibers having a respective first length and a respective second plurality of reinforcing fibers having a respective second length longer than the respective first length.

Hybrid composite materials including carbon nanotube sheets and flexible ceramic materials, and methods of making the same are provided herein. In one embodiment, a method of forming a hybrid composite material is provided, the method including: placing a layer of a first flexible ceramic composite on a lay-up tooling surface; applying a sheet of a pre-preg carbon fiber reinforced polymer on the flexible ceramic composite; curing the flexible ceramic composite and the pre-preg carbon fiber reinforced polymer sheet together to form a hybrid composite material; and removing the hybrid composite material from the lay-up tooling surface, wherein the first flexible ceramic composite comprises an exterior surface of the hybrid composite material.

An aspect of the present invention provides an electromagnetic wave absorption film that is less susceptible to the surrounding environment.

An electromagnetic wave absorption film 10 has: a planar base 20; a first electromagnetic wave absorption pattern 1 formed on the base 20; a second electromagnetic wave absorption pattern 2 formed on the base 20; and a third electromagnetic wave absorption pattern 3 formed on the base 20, wherein when A [GHz] is defined as a frequency at which an absorption amount of an electromagnetic wave absorbed by the first electromagnetic wave absorption pattern 1 exhibits its local maximum value in a range from 20 to 110 GHz, B [GHz] satisfies Expression (1), B [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the second electromagnetic wave absorption pattern 2 exhibits its local maximum value, and C [GHz] satisfies Expression (2), C [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the third electromagnetic wave absorption pattern 3 exhibits its local maximum value,

1.037×A≤B≤1.30×A  Expression (1)

0.60×A≤C≤0.963×A  Expression (2).

A ballistic panel and a ballistic panel assembly that absorb and stops high velocity projectiles is provided. The ballistic panel includes a first layer assembly with a first plurality of weave mesh layers, a second layer assembly with a second plurality of weave mesh layers, and a third solid layer sandwiched between the first layer assembly and the second layer assembly. The ballistic panel assembly can include a releasably attachable GPS tracking chip, an alert signaling device, and/or an outer electromagnetic shield.

Provided are a thin electromagnetic shielding sheet and an electronic device having the same. The thin electromagnetic shielding sheet includes: a pressure-sensitive adhesive tape including a fiber-accumulating type substrate, formed by accumulation of a plurality of fibers and having a plurality of pores, and a metal coating layer on an outer circumferential surface of each of the plurality of fibers, and electrically conductive adhesive layers formed on both surfaces of the fiber-accumulating type substrate, and made of an electrically conductive adhesive material filled in the plurality of pores and electrically connected by an applied pressure; a metal layer which is adhered to the electrically conductive adhesive layer on one surface of the pressure-sensitive adhesive tape to shield electromagnetic waves; and an insulating layer formed on the metal layer.

An electromagnetic camouflage shield comprises a flexible conductive layer and a textile layer. The shield includes at least one outward facing fibrous face, and is creped with at least 5% increased elongation to enhance its flexibility and effective EM thickness. The conductive layer can be the textile layer, or a separate layer. In embodiments, the conductive layer is one of a woven that incorporates metallic yarns, a textile having an electroless plated metal coating, a metal mesh, a thin layer of foil, and an elastomeric layer having a conductive and/or ferrite filler. The textile layer can be a woven or non-woven. Embodiments are fashioned into shirts, pants, and/or other clothing, and can provide drape and moisture vapor transport for enhanced comfort.

An aspect of the present invention provides an electromagnetic wave absorption film that is less susceptible to the surrounding environment. An electromagnetic wave absorption film 10 has: a planar base 20; a first electromagnetic wave absorption pattern 1 formed on the base 20; a second electromagnetic wave absorption pattern 2 formed on the base 20; and a third electromagnetic wave absorption pattern 3 formed on the base 20, wherein when A [GHz] is defined as a frequency at which an absorption amount of an electromagnetic wave absorbed by the first electromagnetic wave absorption pattern 1 exhibits its local maximum value in a range from 20 to 110 GHz, B [GHz] satisfies Expression (1), B [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the second electromagnetic wave absorption pattern 2 exhibits its local maximum value, and C [GHz] satisfies Expression (2), C [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the third electromagnetic wave absorption pattern 3 exhibits its local maximum value,
1.037×A≤B≤1.30×A  Expression (1)
0.60×A≤C≤0.963×A  Expression (2).

A bus bar assembly is provided that includes an electrical conductor with a rectangular cross-section. A first insulation layer surrounds the electrical conductor. A shielding layer surrounds the first insulation layer. The shielding layer is formed from an embossed conductive foil wrapped around the first insulation layer with overlapping sections. A method of making the bus bar assembly is provided that includes an electrical conductor being surrounded with a first insulating layer. The first insulating layer is then wrapped with a shielding layer formed from a conductive foil wrapped around the first insulation layer.

A textile sleeve for routing and protecting an elongate member has a wrappable wall including a textile layer having an inner surface and an opposite outer surface extending lengthwise between opposite ends and widthwise between opposite edges. The opposite edges are configured to be wrapped about a central longitudinal axis to bound a central cavity extending lengthwise along the central longitudinal axis between the opposite ends. The textile layer is formed of yarns interlaced with one another, wherein a least some of the yarns include metal wire(s). A silicone-based layer is disposed about the outer surface of the textile layer to provide enhanced heat-resistance, dielectric protection and impact resistance.