Publications by Johan Frédéric Longo

Apparatus for non-invasive sensing of biomarkers in human sweat

Mihai Adrian Ionescu, Erick Antonio Garcia Cordero, Johan Frédéric Longo, Hoël Maxime Guérin, Francesco Bellando, Fabien Patrick Wildhaber

Presented herein are devices for collecting and/or channeling a biofluid (e.g., sweat, tears, saliva) and detecting and/or quantifying one or more biomarkers in the biofluid. The biomarker(s) may include, for example, ions, salts thereof, hormones and/or s ...

2019

All CMOS Integrated 3D-Extended Metal Gate ISFETs for pH and Multi-Ion (Na+, K+, Ca2+) sensing

Mihai Adrian Ionescu, Maneesha Rupakula, Junrui Zhang, Hoël Maxime Guérin, Erick Antonio Garcia Cordero, Johan Frédéric Longo, Francesco Bellando, Fabien Patrick Wildhaber, Guillaume Charles Henri Herment

This paper reports for the first time, smart 3D-Extended-Metal-Gate Ion-Sensitive-Field-Effect-Transistors (3D-EMG-ISFETs), with unique figures of merit: (i) extremely-low-power (down to a record value of 2 pW per sensor under excellent linearity), (ii) al ...

IEEE2018

CMOS 3D-Extended Metal Gate ISFETs with Near Nernstian Ion Sensitivity

Mihai Adrian Ionescu, Johan Frédéric Longo, Junrui Zhang, Maneesha Rupakula, Erick Antonio Garcia Cordero, Hoël Maxime Guérin, Francesco Bellando, Fabien Patrick Wildhaber, Neil Ebejer

IEEE2018

Three-Dimensional Integrated Ultra-Low-Volume Passive Microfluidics with Ion-Sensitive Field-Effect Transistors for Multiparameter Wearable Sweat Analyzers

Mihai Adrian Ionescu, Junrui Zhang, Erick Antonio Garcia Cordero, Johan Frédéric Longo, Hoël Maxime Guérin, Francesco Bellando, Fabien Patrick Wildhaber

Wearable systems could offer noninvasive and real-time solutions for monitoring of biomarkers in human sweat as an alternative to blood testing. Recent studies have demonstrated that the concentration of certain biomarkers in sweat can be directly correlat ...

2018

Embedded Passive Nano-Liter Micropump For Sweat Collection And Analysis

Mihai Adrian Ionescu, Erick Antonio Garcia Cordero, Johan Frédéric Longo, Montserrat Fernandez-Bolanos Badia, Hoël Maxime Guérin, Francesco Bellando, Fabien Patrick Wildhaber

This paper presents a method to integrate biocompatible passive microfluidic systems within a sensing platform to allow continuous analysis of sweat in a wearable microsystem. The technology is promising for miniaturization of systems to enable access to b ...

IEEE2018

Lab on skin™: 3D monolithically integrated zero-energy micro/nanofludics and FD SOI ion sensitive FETs for wearable multi-sensing sweat applications

Mihai Adrian Ionescu, Erick Antonio Garcia Cordero, Johan Frédéric Longo, Francesco Bellando, Hoël Maxime Guérin, Fabien Patrick Wildhaber

This paper reports a novel fully integrated low power multi-sensing smart system, which, by wafer-level 3D heterogeneous integration of Ion Sensitive Fully Depleted (FD) FETs and SU-8 micro/nanofludics, achieves the first of its kind wearable multi-sensing ...

2017