title: G-Fresnel smartphone spectrometer.
abstract: We report a smartphone spectrometer with nanometer resolution working in the visible range. A G-Fresnel device with the dual functionality of focusing and dispersion is used to enable miniaturization. Proof of principle application to Bradford assay of protein concentration is also demonstrated.
authors.affiliation: Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. ZLiu@engr.psu.edu.
authors.forename: Chenji
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Department of Biomedical Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
authors.forename: Gong
authors.initials: G
authors.lastname: Cheng
authors.affiliation: Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. ZLiu@engr.psu.edu.
authors.forename: Perry
authors.initials: P
authors.lastname: Edwards
authors.affiliation: Department of Biomedical Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
authors.forename: Ming-Da
authors.initials: MD
authors.lastname: Zhou
authors.affiliation: Department of Biomedical Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
authors.forename: Siyang
authors.initials: S
authors.lastname: Zheng
authors.affiliation: Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA. ZLiu@engr.psu.edu.
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Liu
mesh_terms: D000818:Animals; D002417:Cattle; D012710:Serum Albumin, Bovine / Q000032:analysis*; D000068997:Smartphone / Q000295:instrumentation*; D013057:Spectrum Analysis / Q000295:instrumentation*
chemical_list: D012710:Serum Albumin, Bovine