Xiaofeng Chen | DuPont Electronics & Industrial: Can Silver Nanowires Finally Replace ITO Across Curved and Temperature-Sensitive Substrates?
04:09 - 06:23
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How can advanced silver nanowire formulations overcome the thermal and geometric limitations of traditional conductive inks on complex substrates?
The downstream processability of silver nanowire (AgNW) materials represents a significant leap forward for flexible and printed electronics. By offering these nanomaterials in both liquid ink and pre-coated film formats, manufacturers can bypass the rigid processing constraints of conventional metal particle inks. The inherent mechanical flexibility of the nanowire network allows these materials to maintain conductivity even when subjected to severe physical deformation.
For direct-write and conformal applications, AgNW inks compatible with spray, flow, dip, and inkjet deposition enable seamless integration onto complex, non-planar geometries. Crucially, these formulations can undergo sintering and film consolidation at extremely low temperatures, even down to ambient room temperature. This low thermal budget prevents deformation in heat-sensitive substrates, opening up integration pathways for polyolefins and delicate textiles.
Alternatively, roll-to-roll slot-die coating of AgNW inks onto wide-web carrier films provides a highly scalable solution for high-throughput manufacturing. These pre-coated conductive films can be thermoformed, molded, or laminated directly onto target surfaces without disrupting the percolating conductive network. This dual-format product strategy allows designers to choose between direct additive deposition on 3D surfaces and high-volume roll-to-roll lamination.
In this short video, you can learn:
* How low-temperature and room-temperature processing preserves heat-sensitive substrates like polyolefins and fabrics.
* The diverse deposition techniques available for liquid AgNW inks, including inkjet printing, spray coating, and flow coating.
* The scalability of roll-to-roll slot-die coating for producing wide-format conductive films on various flexible and rigid substrates.
๐ **Clip Abstract** The speaker discusses the downstream processability of silver nanowire materials, highlighting the application of liquid inks via spray, flow, dip, and inkjet coating at temperatures as low as room temperature. Additionally, the presentation details roll-to-roll slot-die coating of these inks onto wide-web substrates, including PET, polycarbonate, clear polyimide, and COP, for subsequent lamination or molding.
๐ค Speaker: Xiaofeng Chen
๐ข Company: DuPont Electronics & Industrial
๐
Event: Printed Electronics Innovation Day 2024
๐ Location: TechBlick | Online Platform
๐ Learn more at the next TechBlick event: https://www.techblick.com
#SilverNanowires, #RollToRollSlotDie, #InMoldElectronics, #TransparentConductiveFilms, #PrintedElectronics, #StructuralElectronics
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08:15 - 10:50
How can automotive engineers achieve rapid, uniform de-icing on complex surfaces without compromising optical clarity or energy efficiency?
The transition to highly efficient LED headlamps has introduced an unexpected thermal challenge: because LEDs emit minimal infrared heat, headlamp covers suffer from ice and frost accumulation during winter. Integrating transparent conductive heaters directly into the lens assembly solves this issue. By utilizing advanced nanowire networks, Tier 1 suppliers and OEMs can implement high-efficiency de-icing, defogging, and interior cabin heating systems that optimize energy consumption in electric vehicles.
Nanowire-based heating films demonstrate exceptional thermal kinetics, achieving target temperatures within twenty seconds of voltage application. This rapid thermal response matches the performance of traditional bulk metals while maintaining the high optical transmission required for windshields and sensor apertures. The overall thermal performance of the integrated device can be precisely tuned by adjusting the input power, target dimensions, and substrate characteristics.
To meet diverse thermal and environmental demands, advanced material design offers two distinct nanowire architectures. While standard nanowires reliably support high power densities and elevated operating temperatures, a proprietary noble metal-plated "ultra" nanowireโspecifically featuring a platinum-coated shellโprovides superior voltage tolerance, extreme thermal stability, and enhanced environmental durability for demanding automotive applications.
In this short video, you can learn:
* How the shift to LED headlamps creates a critical need for active, transparent de-icing technologies.
* The thermal response times and power density capabilities of advanced nanowire heating films.
* The performance advantages of proprietary platinum-coated ultra nanowires over standard nanowire structures.
๐ **Clip Abstract** The speaker discusses the application of transparent nanowire heating films for automotive de-icing, defogging, and cabin heating, particularly to address the lack of waste heat from LED headlamps. He compares the rapid thermal response of their standard nanowires with a proprietary, noble metal-plated ultra nanowire designed for superior power density, temperature tolerance, and durability.
๐ค Speaker: Xiaofeng Chen
๐ข Company: DuPont Electronics & Industrial
๐
Event: Printed Electronics Innovation Day 2024
๐ Location: TechBlick | Online Platform
๐ Learn more at the next TechBlick event: https://www.techblick.com
#SlotDieCoating, #PerovskiteTandemCells, #LaserScribing, #FlexiblePhotovoltaics, #PrintedElectronics, #WearableElectronics