Daniel Slep | ChemCubed: How do molecular precursor inks achieve near-bulk conductivity without particle fillers?
00:06:48 - 00:08:15
Other snippets from this talk
Summary of the clip:
How do molecular precursor inks achieve near-bulk conductivity without particle fillers?
Traditional conductive inks rely on suspended metallic nanoparticles combined with resin binders and fillers. During sintering, these organic additives often leave behind voids and polymer residues that compromise electrical performance. In contrast, particle-free or "molecular precursor" inks use reactive silver chemistry that reduces to pure metal during thermal processing.
Because there are no organic binders or fillers left in the final track, the resulting film is completely dense and void-free, as demonstrated by scanning electron microscopy. This allows printed traces to achieve near-bulk electrical conductivity at exceptionally low sintering temperatures, making them highly compatible with thermally sensitive polymer substrates.
This digital additive approach dramatically reduces manufacturing waste, bypassing the heavy environmental toll of traditional copper etching. By leveraging printhead compatibility and fast low-temperature curing, molecular inks enable high-yield digital printing for flexible electronics and complex multilayer circuits.
In this short video, you can learn:
* The chemical difference between nanoparticle-filled inks and molecular precursor reactive inks.
* How the elimination of organic binders prevents voids to yield near-bulk conductivity.
* The processing advantages of low-temperature sintering on flexible substrates.
π **Clip Abstract** Discover how particle-free precursor inks overcome the conductivity and voiding limitations of traditional nanoparticle-based printed electronics. Learn how these reactive molecular inks enable near-bulk silver conductivity at low sintering temperatures.
π Link in comments π
#MolecularPrecursorInks, #ParticleFreeConductiveInks, #LowTemperatureSintering, #ReactiveSilverChemistry, #PrintedElectronics, #FlexibleElectronics
This is a highlight of the presentation:
Advances in Materials and Techniques for Digitally Printing Multi-Layer, Multi-Material Electronics
Future of Electronics RESHAPED USA 2026
10-11 June 2026
Computer History Museum, Mountain View, California, USA
Organised By:
TechBlick
More Highlights from the same talk.
00:08:20 - 00:09:47
Can carbon nanotubes solve the high thermal expansion of 3D-printed dielectrics?
How can we overcome the dispersion limits of carbon nanotubes to engineer ultra-high-modulus, thermally stable dielectric nanocomposites?
In the field of printed electronics, incorporating carbon nanotubes (CNTs) into dielectric matrices has historically been bottlenecked by severe agglomeration. When mixed in bulk, CNTs tend to coalesce, yielding a material with poor electrical and mechanical properties akin to carbon black dispersion. To bypass this thermodynamic limitation, a novel co-deposition technique utilizes dual-channel inkjet printing to deposit a standard dielectric ink alongside a CNT-doped formulation simultaneously.
This precise, multi-channel inkjet deposition strategy successfully prevents CNT re-agglomeration, keeping the nanotubes singular in nature within the curing matrix. By maintaining this highly dispersed, singular state during the printing process, the resulting nanocomposite exhibits material properties that are fundamentally unattainable through conventional bulk mixing. The localized control of the nanofiller network yields a highly structured, high-performance dielectric.
The mechanical and thermal payoffs of this singularized CNT integration are profound, effectively achieving a long-sought milestone in polymer engineering. The composite demonstrates an exceptionally low coefficient of thermal expansion (CTE) alongside an elevated glass transition temperature (Tg) and a vastly increased elastic modulus. This structural reinforcement produces an extremely rugged, thermally stable standalone dielectric capable of withstanding severe mechanical impacts without fracturing.
In this short video, you can learn:
* How dual-channel inkjet printing prevents carbon nanotube agglomeration.
* The material science behind achieving singularized CNT dispersion in a dielectric matrix.
* The dramatic improvements in thermal expansion, glass transition temperature, and mechanical modulus of the resulting nanocomposite.
π **Clip Abstract** The speaker discusses a patent-pending, high-performance dielectric material fabricated by simultaneously printing a standard dielectric ink and a CNT-doped ink through two channels of an inkjet head. This co-deposition method keeps the carbon nanotubes singular in nature, yielding an exceptionally strong, thermally stable composite with a low coefficient of thermal expansion and high glass transition temperature.
π€ Speaker: Daniel Slep
π’ Company: ChemCubed
π
Event: Future of Electronics RESHAPED USA 2026
π Location: Computer History Museum, Mountain View, California, USA
π Learn more at the next TechBlick event: https://www.techblick.com
#DualChannelCoDeposition, #CarbonNanotubeDielectrics, #LowCTEDielectrics, #InkjetPrintedDielectrics, #AdditiveElectronics, #PrintedElectronics
00:12:42 - 00:13:26
How can printed electronics developers overcome the physical limits of ink spread to achieve high-aspect-ratio conductive traces without sacrificing lateral resolution?
In inkjet-printed electronics, maintaining narrow line widths while depositing sufficient material to achieve low electrical resistance is a persistent engineering challenge. As successive layers of conductive silver ink are jetted to increase trace height, the liquid naturally spreads laterally due to surface energy mismatches and wetting behavior. This uncontrolled wetting degrades the spatial resolution of the circuitry, limiting the density of the printed interconnects.
To suppress this lateral migration, advanced printing systems employ a co-deposition technique known as dielectric templating. By utilizing multi-head inkjet configurations, developers can precisely deposit a dielectric material to form structural canals or physical barriers prior to the metallization step. These pre-patterned dielectric micro-channels act as physical templates that confine the subsequently printed silver ink, preventing fluid spread even as trace height is scaled.
This multi-head spatial patterning approach represents a significant shift from traditional layer-by-layer planar deposition. By integrating dielectric confinement directly into the printing workflow, manufacturers can achieve high-aspect-ratio conductive features with superior resolution control. This technique optimizes both the electrical cross-section and the spatial density of the printed circuitry on a single platform.
In this short video, you can learn:
* How multi-head inkjet printing enables the simultaneous deposition of structural dielectrics and conductive silver inks.
* The mechanism of dielectric templating and how it prevents lateral ink spread during multi-layer printing.
* Methods for increasing conductive trace heights to improve performance while maintaining strict resolution limits.
π **Clip Abstract** The speaker introduces dielectric templating, a multi-head inkjet printing technique that utilizes pre-printed dielectric canals to confine conductive silver ink. This method prevents lateral ink spread during multi-layer deposition, allowing developers to increase trace heights while maintaining high spatial resolution.
π€ Speaker: Daniel Slep
π’ Company: ChemCubed
π
Event: Future of Electronics RESHAPED USA 2026
π Location: Computer History Museum, Mountain View, California, USA
π Learn more at the next TechBlick event: https://www.techblick.com
#PerovskiteQuantumDots, #MicroLEDPixelation, #ColorConversionCavities, #DiffractiveWaveguides, #NearEyeDisplays, #AdditiveElectronics