An Ultra-low Power 8T SRAM with Vertical Read Word Line and Data Aware Write Assist

Lu, Lu; Yoo, Taegeun; Loi, Le Van; Kim, Tony Tae-Hyoung

doi:10.1109/asscc.2018.8579292

Cited by 10 publications

(1 citation statement)

References 5 publications

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“…Figure 5d shows a circuit diagram of the SRAM and the connection to the battery. The voltage and current supplied by our battery were sufficient to power the SRAM, which was designed to operate between 0.26 and 1.2 V. 36 Here, we tested the SRAM mounted on a board rather than embedded into a contact lens because our focus was the fabrication of the battery rather than the integration of ICs with batteries. The required electrical signals were applied to the SRAM using a function generator, and the output signals were measured by an oscilloscope (Figure 5e).…”

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confidence: 99%

Tear-Based Aqueous Batteries for Smart Contact Lenses Enabled by Prussian Blue Analogue Nanocomposites

et al. 2021

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Batteries for contact lenses fabricated by conventional methods could cause severe damage to the eyes if broken. Herein, we present flexible aqueous batteries that operate in tears and provide a safe power supply to smart contact lenses. Nanocomposite flexible electrodes of carbon nanotubes and Prussian blue analogue nanoparticles for cathode and anode were embedded in UV-polymerized hydrogel as not only a soft contact lens but also an ion-permeable separator. The battery exhibited a discharging capacity of 155 μAh in an aqueous electrolyte of 0.15 M Na-ions and 0.02 M K-ions, equivalent to the ionic concentration of tears. The power supply was enough to operate a low-power static random-access memory. In addition, we verified the mechanical stability, biocompatibility and compatibility with a contact lens cleaning solution. It could ultimately enable a safe power supply for smart contact lenses without risk of injury due to the leakage or breakage of the battery.

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Tear-Based Aqueous Batteries for Smart Contact Lenses Enabled by Prussian Blue Analogue Nanocomposites

et al. 2021

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Darlington Based 8T CNTFET SRAM Cells with Low Power and Enhanced Write Stability

Elangovan¹,

Karthickeyan²,

Kumar³

et al. 2021

Trans. Electr. Electron. Mater.

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Electrochemical kinetic energy harvesting mediated by ion solvation switching in two-immiscible liquid electrolyte

Lee,

Song,

et al. 2024

Nat Commun

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Kinetic energy harvesting has significant potential, but current methods, such as friction and deformation-based systems, require high-frequency inputs and highly durable materials. We report an electrochemical system using a two-phase immiscible liquid electrolyte and Prussian blue analogue electrodes for harvesting low-frequency kinetic energy. This system converts translational kinetic energy from the displacement of electrodes between electrolyte phases into electrical energy, achieving a peak power of 6.4 ± 0.08 μW cm −2 , with a peak voltage of 96 mV and peak current density of 183 μA cm −2 using a 300 Ω load. This load is several thousand times smaller than those typically employed in conventional methods. The charge density reaches 2.73 mC cm −2 , while the energy density is 116 μJ cm −2 during a harvesting cycle. Also, the system provides a continuous current flow of approximately 5 μA cm −2 at 0.005 Hz for 23 cycles without performance decay. The driving force behind voltage generation is the difference in solvation Gibbs free energy between the two electrolyte phases. Additionally, we demonstrate the system’s functionality in a microfluidic harvester, generating a maximum power density of 200 nW cm −2 by converting the kinetic energy to propel the electrolyte through the microfluidic channel into electricity.

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An Ultra-low Power 8T SRAM with Vertical Read Word Line and Data Aware Write Assist

Cited by 10 publications

References 5 publications

Tear-Based Aqueous Batteries for Smart Contact Lenses Enabled by Prussian Blue Analogue Nanocomposites

Tear-Based Aqueous Batteries for Smart Contact Lenses Enabled by Prussian Blue Analogue Nanocomposites

Darlington Based 8T CNTFET SRAM Cells with Low Power and Enhanced Write Stability

Electrochemical kinetic energy harvesting mediated by ion solvation switching in two-immiscible liquid electrolyte

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