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Ren, Guanghui; Zhang, Bao Yue; Yao, Qifeng; Zavabeti, Ali; Huertas, Cesar S.; Brkljača, Robert; Khan, Muhammad Waqas; Nili, Hussein; Datta, Robi S.; Khan, Hareem; Jannat, Azmira; Walia, Sumeet; Haque, Farjana; O'Dell, Luke A.; Wang, Yichao; Zhu, Lianqing; Mitchell, Arnan; Ou, Jian Zhen
Small, March 1, 2019, 2019-03-00, 20190301, Letnik: 15, Številka: 9Journal Article
Silicon photonics has demonstrated great potential in ultrasensitive biochemical sensing. However, it is challenging for such sensors to detect small ions which are also of great importance in many biochemical processes. A silicon photonic ion sensor enabled by an ionic dopant–driven plasmonic material is introduced here. The sensor consists of a microring resonator (MRR) coupled with a 2D restacked layer of near‐infrared plasmonic molybdenum oxide. When the 2D plasmonic layer interacts with ions from the environment, a strong change in the refractive index results in a shift in the MRR resonance wavelength and simultaneously the alteration of plasmonic absorption leads to the modulation of MRR transmission power, hence generating dual sensing outputs which is unique to other optical ion sensors. Proof‐of‐concept via a pH sensing model is demonstrated, showing up to 7 orders improvement in sensitivity per unit area across the range from 1 to 13 compared to those of other optical pH sensors. This platform offers the unique potential for ultrasensitive and robust measurement of changes in ionic environment, generating new modalities for on‐chip chemical sensors in the micro/nanoscale. A silicon photonic ion sensor enabled by a dopant‐driven 2D restacked layer of near‐infrared plasmonic molybdenum oxide is introduced. It has dual sensing outputs due to the refractive index and optical absorption changes of the 2D material in different ionic environments. The demonstrated pH sensing model shows up to 7 orders improvement in sensitivity per unit area.
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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