Additive Manufacturing utilizing Aerosol Jet&lt;sup&gt;&amp;#xAE;&lt;/sup&gt; Printing Technology for LED wire bond replacement

Rudorfer, Andreas; Pichler, Heinz; Palfinger, Ursula; Reil, F.; Wenzl, Franz P.; Hartmann, Paul

doi:10.2352/issn.2169-4451.2014.30.1.art00108_1

Cited by 2 publications

(1 citation statement)

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“…Therefore, the application of AJP toward the fabrication of LEDs represents an emerging area of investigation for potential sensor integration, and thus, is summarized below. Although some of the earliest reported work with respect to LED manufacturing utilized AJP toward the fabrication of direct-write structures as replacements for LED wire bonds, [239,240] more recently, researchers have investigated quantum dot (QD)-based technologies that can emit red, green, and blue colors and be incorporated into a micro-LED array. [241,242] Compared to LEDs, organic light-emitting diodes (OLEDs) are significantly thinner, allowing them to be multilayered, which leads to brighter output, wider temperature range, and faster response times.…”

Section: Light-emitting Diodesmentioning

confidence: 99%

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Fisher

Skolrood

et al. 2023

Adv Materials Technologies

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An emergent direct‐write approach, aerosol‐jet printing (AJP), is gaining attention for the deployment of rapid and affordable microadditively manufactured energy‐efficient sensors and printed electronics. AJP enables a broad range of ink viscosities (0.001–1 Pa s) for printing diverse materials ranging from ceramics and metals to polymers and biological matter. Reproducible, high‐spatial‐resolution features (≈10 µm), and wide standoff distances (1–11 mm) between the nozzle and the substrate facilitate conformal printing of complex geometrical designs on nonplanar—e.g., stepped or curved—surfaces. This paper aims to provide a comprehensive overview of state‐of‐the‐art AJP‐based sensors (e.g., strain and temperature gauges, biosensors, photosensors, humidity and surface acoustic wave sensors, dielectric elastomer actuators, and motion, smoke, and hazardous gas detectors) and to discuss prospective applications. The drive toward cost‐effective devices that are smaller, lighter, and better‐performing remains a frontier challenge in the field of printed electronics. Consequently, as AJP becomes increasingly utilized in the high‐volume manufacturing of miniaturized active and passive sensors, it opens a pathway for facile large‐scale fabrication of devices for a wide range of consumer and industrial applications, including transportation, agriculture, infrastructure, aerospace, national defense, and healthcare.

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Section: Light-emitting Diodesmentioning

confidence: 99%

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Fisher

Skolrood

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

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Aerosol Jet Printing of Graphene and Carbon Nanotube Patterns on Realistically Rugged Substrates

et al. 2021

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Direct-write additive manufacturing of graphene and carbon nanotube (CNT) patterns by aerosol jet printing (AJP) is promising for the creation of thermal and electrical interconnects in (opto)electronics. In realistic application scenarios, this however often requires deposition of graphene and CNT patterns on rugged substrates such as, for example, roughly machined and surface-oxidized metal block heat sinks. Most AJP of graphene/CNT patterns has thus far however concentrated on flat wafer- or foil-type substrates. Here, we demonstrate AJP of graphene and single walled CNT (SWCNT) patterns on realistically rugged plasma-electrolytic-oxidized (PEO) Al blocks, which are promising heat sink materials. We show that AJP on the rugged substrates offers line resolution of down to ∼40 μm width for single AJP passes, however, at the cost of noncomplete substrate coverage including noncovered μm-sized pores in the PEO Al blocks. With multiple AJP passes, full coverage including coverage of the pores is, however, readily achieved. Comparing archetypical aqueous and organic graphene and SWCNT inks, we show that the choice of the ink system drastically influences the nanocarbon AJP parameter window, deposit microstructure including crystalline quality, compactness of deposit, and inter/intrapass layer adhesion for multiple passes. Simple electrical characterization indicates aqueous graphene inks as the most promising choice for AJP-deposited electrical interconnect applications. Our parameter space screening thereby forms a framework for rational process development for graphene and SWCNT AJP on application-relevant, rugged substrates.

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Additive Manufacturing utilizing Aerosol Jet<sup>®</sup> Printing Technology for LED wire bond replacement

Cited by 2 publications

References 0 publications

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Aerosol Jet Printing of Graphene and Carbon Nanotube Patterns on Realistically Rugged Substrates

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