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Published
Manufacturing & Production

Architected Porous Stamp for Liquid Transfer Printing

Mass production roll-to-roll printing techniques such as flexography, gravure, and offset are undergoing re-examination for their suitability in the emerging area of printed electronics. These methods rely on high speed ink-transfer mechanisms using direct print-form to substrate contact. Commonly occurring defects such as haloing, featuring, and bridging can impact the performance of printed materials for electronics applications. To improve the viability of these approaches, strategies are needed to increase print fidelity and film uniformity.

By Sandia National Laboratories

Reference Number   08671

Last Update   May 03, 2022

Published
Manufacturing & Production

Additively Manufactured Crystalline Materials

Semiconductors are foundational materials that underpin all modern electronic devices ranging from integrated circuits, LEDs, and photovoltaics. One class of crystalline semiconductor material that has gained widespread attention is broadly known as organometallic perovskites. Perovskites have beneficial properties such as high optical gain, long carrier lifetimes, and tunable wavelengths which can enable remarkable power conversion efficiencies (PCE). Despite its promise, there are several challenges to incorporating organometallic perovskite into functional devices, including environmental sensitivity and degradation of physical properties of the crystalline material during processing.

By Sandia National Laboratories

Reference Number   08672

Last Update   May 02, 2022

Published
Multi Sector

Refractory High-Entropy Alloy (RHEA) Compact Heat Exchanger

When it comes to their material properties, high-efficiency compact heat exchangers require a suitable combination of creep, high-temperature strength, oxidation resistance, and thermal shock. Current heat exchanger designs incur costly pressure drops while only marginally increasing heat transfer. The ability to manufacture complex geometries is needed to reduce this wasteful pressure drop. However, conventional material and manufacturing methods cannot achieve this combination of material properties and complex geometries.

By Sandia National Laboratories

Reference Number   08673

Last Update   May 03, 2022

Published
Engineering

Electromechanical Grip Tester

The increasing demand for products to meet industry accepted performance standards such as ASTM and ISO has resulted in the need for improved test equipment designs that can deliver faster and more comprehensive results at lower costs. A common challenge faced during the testing of conductive materials is that their electrical characteristics are known to vary in response to external thermal conditions and mechanical loads.

By Sandia National Laboratories

Reference Number   08674

Last Update   Apr 26, 2022

Published
Manufacturing & Production

Enhanced Functional Alloys with High Strength and Ductility

Additive manufacturing (AM) offers unprecedented design freedom that can lead to novel materials development. Intermetallic alloys have useful magnetic properties such as high permeability, low coercivity, and high saturation induction that are ideal for electromagnetic devices, particularly those in aerospace applications. However, when they are conventionally manufactured, these alloys are notoriously brittle and have poor mechanical properties that have impeded their commercialization in bulk form.

By Sandia National Laboratories

Reference Number   08675

Last Update   May 03, 2022

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