Moon, Hi Gyu Jung, Youngmo Jun, Dukwoo Park, Ji Hyun Chang, Young Wook Park, Hyung-Ho Kang, Chong-Yun Kim, Chulki Kaner, Richard B. 2024-01-19T23:30:42Z 2024-01-19T23:30:42Z 2021-09-03 2018-03 2379-3694 https://pubs.kist.re.kr/handle/201004/121680 Hollow-structured nanomaterials are presented as an outstanding sensing platform because of their unique combination of high porosity in both the micro- and nanoscale, their biocompatibility, and flexible template applicability. Herein, we introduce a bacterial skeleton method allowing for cost-effective fabrication with nanoscale precision. As a proof-of-concept, we fabricated a hollow SnO2 hemipill network (HSHN) and a hollow Pt-functionalized SnO2 hemipill network (HPN). A superior detecting capability of HPN toward acetone, a diabetes biomarker, was demonstrated at low concentration (200 ppb) under high humidity (RH 80%). The detection limit reaches 3.6 ppb, a level satisfying the minimum requirement for diabetes breath diagnosis. High selectivity of the HPN sensor against C6H6, C7H8, CO, and NO vapors is demonstrated using principal component analysis (PCA), suggesting new applications of HPN for human-activity monitoring and a personal healthcare tool for diagnosing diabetes. The skeleton method can be further employed to mimic nanostructures of biomaterials with unique functionality for broad applications. English AMER CHEMICAL SOC GAS-SENSING PROPERTIES EXHALED-BREATH OXIDE NANOSTRUCTURES SELECTIVE DETECTION WO3 NANOFIBERS LUNG-CANCER SENSORS NANOPARTICLES ACETONE CO Hollow Pt-Functionalized SnO2 Hemipill Network Formation Using a Bacterial Skeleton for the Noninvasive Diagnosis of Diabetes Article 10.1021/acssensors.7b00955 1 ACS Sensors, v.3, no.3, pp.661 - 669 ACS Sensors 3 3 661 669 scie scopus 000428608400019 2-s2.0-85044434841 Chemistry, Multidisciplinary Chemistry, Analytical Nanoscience & Nanotechnology Chemistry Science & Technology - Other Topics Article GAS-SENSING PROPERTIES EXHALED-BREATH OXIDE NANOSTRUCTURES SELECTIVE DETECTION WO3 NANOFIBERS LUNG-CANCER SENSORS NANOPARTICLES ACETONE CO hollow SnO2 nanostructures bacterial skeleton chemiresisitve sensor exhaled breath analyzer diabetes