This article reviews the recent advances in the field of batteryless near-field communication
(NFC) sensors for chemical sensing and biosensing. The commercial availability of low-cost …

In this paper, we present a low-cost battery-less color sensor based on Near Field
Communication (NFC). This system consists of a color sensor connected to a low-power …

A robust classification algorithm that applies color science and image processing techniques
is developed to automatically identify the pH level on a test strip. This algorithm is …

The implementation of near-field communication (NFC) technology in smartphones has
grown rapidly, especially due to the use of this technology as a payment system. In addition …

In this paper, we present a new algorithm that automatically classifies the pH level on a test
strip using color image processing techniques. This algorithm is implemented on a camera …

The analysis of colors is omnipresent in forensics. While their use for macroscopic evidence
such as soil sees a large amount of research, their correct handling is more challenging …

O pH, ou Potencial de Hidrogênio, é a escala que mede o grau de acidez ou alcalinidade
de uma substância, sendo uma característica de todas as substâncias, determinado pela …

O potencial hidrogeniônico (pH) é um dos principais parâmetros de qualidade em diversas
indústrias, tais como a alimentícia, de bebidas e de tratamento de água. Alguns métodos de …

In this article measure pH is intended in the culture solution and designed embedded
system automatically and without human intervention be able to instantly measure the pH …