Publications by Ali Meimandi | EPFL Graph Search

A More Reliable Equivalent Circuit of Electrochemical Sensors for Robust Design of CMOS Front-ends

Sandro Carrara, Gian Luca Barbruni, Ali Meimandi

Electrochemical sensors integrated with CMOS circuits play a pivotal role in quantifying various chemicals across a huge spectrum of applications, prominently in distributed diagnostics and remote monitoring. When designing integrated devices, meticulous c ...

2025

Design and in vitro Characterization of a Wearable Multisensing System for Hydration Monitoring

Sandro Carrara, Sarah Tonello, Ata Jedari Golparvar, Ali Meimandi

Dehydration is a frequent condition in the elderly and can lead to serious health complications if not compensated timely. Early diagnosis can be problematic, as medical examinations in the hospital would be needed. Fully wearable low-cost multisensing dev ...

Ieee-Inst Electrical Electronics Engineers Inc2024

New Sensory Method for Neural Activity by Frequency Upconversion With Nonlinear Element

Sandro Carrara, Gian Luca Barbruni, Ali Meimandi

Traditional analog front-ends for biomedical signal acquisitions operate at very low frequencies (Hz-range) and are severely affected by flicker and environmental noise, which degrade the quality of low-frequency signals, thereby reducing the signal-to-noi ...

2024

A 69 µm2 Sub-nW/kHz Capacitor-less Ring Oscillator for Ultra-Miniaturized Implants

Sandro Carrara, Gian Luca Barbruni, Ali Meimandi

This paper presents an ultra-miniaturized, ultra-low-power, capacitor-less CMOS ring oscillator based on dynamic leakage suppression technique. Measurement results demonstrated an oscillation frequency of 21.89 kHz and a power consumption of 7.9 nW for a s ...

Institute of Electrical and Electronics Engineers Inc.2024

A Novel Microfluidic System for Capacitive Detection Via Magnetophoretic Separation of Malaria-Infected Red Blood Cells

Sandro Carrara, Ali Meimandi

Malaria continues to pose a significant global health challenge, with substantial impediments arising from the need for more reliable, effective, and economically viable diagnostic tools, particularly for early detection. This research introduces a novel m ...

2024

Inkjet-Printed Soft Intelligent Medical Bracelet for Simultaneous Real-Time Sweat Potassium (K+), Sodium (Na+), and Skin Temperature Analysis

Sandro Carrara, Ata Jedari Golparvar, Ali Meimandi

Truly wearable, fully flexible, and multiparametric sweat analysis with soft and socially discrete packaging offers tremendous potential to enable the next generation of noninvasive digital biomarkers analysis. Several examples of miniaturized potentiometr ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023

Implantable Biosensor for Brain Dopamine using Microwire-Based Electrodes

Sandro Carrara, Ali Meimandi

This paper systematically demonstrates the feasibility of wirelessly monitoring dopamine concentration in the brain with an implantable biosensor. The biosensor was realized using microwires, and then, the dopamine concentration was measured in-vitro rangi ...

IEEE2023

Flexible Sensor and Readout Circuitry for Continuous Ion Sensing in Sweat

Sandro Carrara, Ata Jedari Golparvar, Ali Meimandi

In this letter, we present a custom-designed and flexible readout circuitry for the characterization of flexible and planar electrolyte-gated carbon nanotube field-effect transistor-based biosensors for ammonium detection in sweat. We employed spray-deposi ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023