Publications by Vivek Subramanian

Highly Stable Low‐Temperature Phosphate Glass as a Platform for Multimaterial 3D Printing of Integrated Functional Microfluidic Devices

The monolithic fabrication of microfluidic systems using additive manufacturing technology offers a promising route for integrating the multifunctionality essential to these devices. However, this approach faces key challenges, primarily due to the limited ...

Wiley2025

Sub-mm3 dimensional scaling of fully-integrated additively-fabricated microsupercapacitors for embedded energy storage applications

Vivek Subramanian, Amin Hodaei

Microsupercapacitors (MSCs) are attractive energy devices for applications in IoT, wireless sensors, and other microelectronic systems due to their small footprints. In this work, the dimensional scaling of fully-integrated additively-fabricated MSCs is sy ...

Royal Society of Chemistry2024

Tracking deep-level defects in degrading perovskite solar cells with a multifactorial approach

Vivek Subramanian

In this work, we provide a mechanistic understanding of the degradation of perovskite solar cells in operation by focusing on methylammonium lead triiodide (CH3NH3PbI3 or MAPbI3) and tracking the evolution of electronic defects via photo-induced current tr ...

Elsevier2024

Intensity-coupled multi-beam phase retrieval for holographic volumetric additive manufacturing

Vivek Subramanian

Multi-beam holographic projection is a promising yet underexplored avenue for advanced volumetric additive manufacturing (VAM) systems to control image focus in 3D, compensate for aberrations, and overcome resolution anisotropy. Nevertheless, there is curr ...

Optica Publishing Group2024

Towards personalized microfluidics: 3D printing of high-performance micropumps by control and optimization of fabrication-induced surface roughness

Vivek Subramanian

Additive fabrication technologies are very attractive for use in the realization of customized medical diagnostic and point-of-care devices in the rapidly growing field of personalized healthcare. However, non-idealities in additive manufacturing processes ...

2024

Room temperature imprinting of water-based microparticulate inks for realizing glass microfluidic channels

Vivek Subramanian

The combination of imprinting and extrusion overprinting of composite glass materials offers a pathway for the fabrication of fully integrated functional microfluidic devices. Utilizing novel low -temperature phosphate glasses, originally developed for 3D ...

Elsevier Sci Ltd2024

Digital LIGA: exploitation of droplet-on-demand inkjet printing to fabricate complex mechanical structures by electroforming

Vivek Subramanian

A novel 3D fabrication technique called digital LIGA is proposed, integrating functional digital printing with 3D microfabrication via electrodeposition. This allows for the realization of complex multilevel metallic structures without problems associated ...

IOP Publishing Ltd2023

Printed Platinum Nanoparticle Thin-Film Structures for Use in Biology and Catalysis: Synthesis, Printing, and Application Demonstration

Vivek Subramanian

This work describes the formulation of a stable platinum nanoparticle-based ink for drop-on-demand inkjet printing and fabrication of metallic platinum thin films. A highly conductive functional nanoink was formulated based on dodecanethiol platinum nanopa ...

AMER CHEMICAL SOC2023

"Additive fabrication of fully-integrated high-performance millimeter-scale microsupercapacitors: Fine-tuning chemistry to maximize performance"

Vivek Subramanian, Amin Hodaei

Microsupercapacitors (MSCs) are attractive for use as energy devices to power wearables, IoT, and other small microsystems. Additive fabrication of these devices will facilitate easy integration into a range of ubiquitous microsystem platforms. In this wor ...

Elsevier2023

Screen-Printable Cu-Ag Core-Shell Nanoparticle Paste for Reduced Silver Usage in Solar Cells: Particle Design, Paste Formulation, and Process Optimization

Vivek Subramanian

Copper-silver (Cu-Ag) core-shell nanoparticles are promising for replacing the silver particles and flakes used in printed conductors in current solar cells since they deliver good conductivity, chemical stability, and optical performance, while also reduc ...

AMER CHEMICAL SOC2022