A technique to additively print onto a dissimilar material, especially ceramics and glasses (e.g., semiconductors, graphite, diamond, other metals) is disclosed herein. The technique enables manufacture of heat removal devices and other deposited structures, especially on heat sensitive substrates. It also enables novel composites through additive manufacturing. The process enables rapid bonding, orders-of-magnitude faster than conventional techniques.

A diffuser plate for a thermal transfer device can include a body having a number of first apertures and a second aperture that traverse therethrough, where the first apertures are asymmetrically arranged with respect to the second aperture. The first apertures can have a first shape and a first size, and where the first apertures are configured to receive a plurality of tubes. The second aperture has a second size, where the second size is larger than the first size.

Embodiments described herein relate to the concept and designs of a polymer-based thermal ground plane. In accordance with one embodiment, a polymer is utilized as the material to fabricate the thermal ground plane. Other embodiments include am optimized wicking structure design utilizing two arrays of micropillars, use of lithography-based microfabrication of the TGP using copper/polymer processing, micro-posts, throttled releasing holes embedded in the micro-posts, atomic layer deposition (ALD) hydrophilic coating, throttled fluid charging structure and sealing method, defect-free ALD hermetic coating, and compliant structural design.

Disclosed herein are articles comprising: (a) a glass micro sheet having top and bottom surfaces and a thickness of about 0.001 to about 0.040 inches; and (b) a layer comprising a plurality of composite layers, the layer having top and bottom surfaces, wherein the bottom layer of the glass micro sheet is bonded to the top surface of the layer comprising a plurality of composite layers; and wherein the (Ra) of the top surface of the glass micro sheet is 1 nm<Ra<1 μm, and methods of making same.

A tube sheet for a shell and tube heat exchanger. The tube sheet includes a substrate having a plurality of through holes; a plug made of a plug material located in each through hole, each plug having a through passage shaped to receive an end of a corresponding tube from the heat exchanger; and a lining made of a lining material, the lining encapsulates the substrate and fills a gap between each plug and the substrate.

A window assembly heat transfer system is disclosed in which a window member has a selected transparency to monitored or sensed light wavelengths. One or more passages are provided in the window member for flowing a single-phase or two-phase heat transfer fluid, the passages being optically non-transparent to the monitored or sensed light wavelengths. A mechanism allows either evaporation or condensation of the fluid and/or balancing of a flow of the fluid within the passages. In one embodiment, the window assembly can be made by producing passages in a top surface of a first single plate, optionally producing passages in a bottom surface of a second single plate and bonding the top surface of the first plate to a bottom surface of a second single plate to form the window member with the passage or passages. In another embodiment, the window assembly can be made by providing a core around which the window member material is grown and thereafter removing the core to produce the passage or passages.

A technique to additively print onto a dissimilar material, especially ceramics and glasses (e.g., semiconductors, graphite, diamond, other metals) is disclosed herein. The technique enables manufacture of heat removal devices and other deposited structures, especially on heat sensitive substrates. It also enables novel composites through additive manufacturing. The process enables rapid bonding, orders-of-magnitude faster than conventional techniques.

A diffuser plate for a thermal transfer device can include a body having a number of first apertures and a second aperture that traverse therethrough, where the first apertures are asymmetrically arranged with respect to the second aperture. The first apertures can have a first shape and a first size, and where the first apertures are configured to receive a plurality of tubes. The second aperture has a second size, where the second size is larger than the first size.

A heat pipe includes a container including a container substrate and a working fluid enclosed in the container. The working fluid contains water. The heat pipe includes a first film containing tin and/or a tin alloy on at least an inner surface of the container substrate and a second film formed on at least a part of a surface of the first film and containing an oxide and/or hydroxide containing tin.

A tube bundle-type heat exchanger, to a tube base, and to a method for sealing same. Aspects of the invention relate to a tube base for a tube bundle-type heat exchanger. In particular, the tube base includes a stack of multiple tube base plates with at least one through-opening for receiving a respective tube of the tube bundle-type heat exchanger. The throughopening is sealed by at least one seal ring. Additional aspects relate to a tube bundle-type heat exchanger comprising such a tube base and to a method for sealing a tube bundle-type heat exchanger in particular in the region of the tube base.