title: Wireless gas detection with a smartphone via rf communication.
abstract: Chemical sensing is of critical importance to human health, safety, and security, yet it is not broadly implemented because existing sensors often require trained personnel, expensive and bulky equipment, and have large power requirements. This study reports the development of a smartphone-based sensing strategy that employs chemiresponsive nanomaterials integrated into the circuitry of commercial near-field communication tags to achieve non-line-of-sight, portable, and inexpensive detection and discrimination of gas-phase chemicals (e.g., ammonia, hydrogen peroxide, cyclohexanone, and water) at part-per-thousand and part-per-million concentrations.
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139.
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Azzarelli
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139.
authors.forename: Katherine A
authors.initials: KA
authors.lastname: Mirica
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139.
authors.forename: Jens B
authors.initials: JB
authors.lastname: Ravnsbæk
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139 tswager@mit.edu.
authors.forename: Timothy M
authors.initials: TM
authors.lastname: Swager
mesh_terms: D040421:Cell Phone; D005740:Gases / Q000032:analysis*; D015386:Hazardous Substances / Q000032:analysis; D049329:Nanostructures; D011846:Radio Waves
chemical_list: D005740:Gases; D015386:Hazardous Substances
keywords: NFC; RFID; nanomaterials; sensor; wireless