최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기초록이 없습니다.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
이차원 물질의 구조는 어떻게 되는가? | 최근 원자 층 두께이면서 다양한 전기적 특성을 가진 이차원 물질(2D materials)들에 대한 기초 및 응용연구에 대해 활발히 진행 되고 있다.1-12) 기본적으로 그 두께가 3 ~ 6 Å 이면서(Fig. 1(a)), 전기적 에너지 밴드갭(Electrical Energy Band-gap)이 0 eV ~ 2 eV, 그리고~6 eV까지 다양한 구조를 가지고 있어서(Fig. 1(b)) 이들을 이용한 광 및 전자 소자 응용연구가 활발히 진행 되고 있다. | |
이차원 물질을 이용한 가스센서의 동작 원리는? | 즉 Fig. 3(a)와 같이 공기 중에 측정하고자 하는 분자가 퍼져 있을 때 그 분자들이 이차원 물질의 표면에 흡착(adsorption)되면서 상호간에 전하(electron)가 이동하는 방향과 정도에 따라 분자들을 감지하는 원리이다. 이때 각각의 분자들과 이차원 물질 표면간의 흡착되는 에너지는 그 구조 및 전기적 에너지 밴드에 의해 결정 되며 매우 다양하다. | |
대표적인 이차원 물질은 무엇인가? | 4-12) 특히 Fig. 2(a)와 같이 대표적인 이차원 물질인 그래핀(graphene)과 헥사고날 보른 나이트라이드(h-BN)에 대한 연구의 경우 2004년 부터 활발히 진행되어 왔으며, 2008~ 2010년부터 다양한 반도체 특성의 transition metal dichalcogenides(TMDCs)와 Black Phosphorus(BP)등의 새로운 이차원 물질에 대한 연구가 꾸준히 진행 되고 있다.11) 게다가 이러한 원자층 두께의 이차원 물질의 경우 다양한 전기적 특성을 살려 고성능의 전기적 특성을 얻는 연구 외에도 투명하며 유연한 소자로서의 응용연구가 Fig. |
K. S. Novoselov, A. K. Geim, S. V. Morozov, D. Jiang, Y. Zhang, S. V. Dubonos, I. V. Grigorieva, and A. A. Firsov, "Electric field effect in atomically thin carbon films", Science 306, 666 (2004)
K. S. Novoselov, A. K. Geim, S. V. Morozov, D. Jiang, M. I. Katsnelson, I. V. Grigorieva, S. V. Dubonos, and A. A. Firsov, "Two-dimensional gas of massless Dirac fermions in graphene", Nature 438, 197 (2005)
Y. Zhang, Y.-W. Tan, H. L. Stormer, and P. Kim, "Experimental observation of the quantum hall effect and Berry's phase in graphene" Nature 438, 201 (2005)
F. Xia, H. Wang, D. Xiao, M. Dubey, and A. Ramasubramaniam, "Two-dimensional material nanophotonics" Nature Photon., 8, 899-907 (2014).
A. Allain, J. Kang, K. Banerjee, and A. Kis, "Electrical contacts to two-dimensional semiconductors" Nature Mater. 14, 1195-1205 (2015)
B. Radisavljevic, A. Radenovic, J. Brivio, V. Giacomett, and A. Kis, "Single-layer $MoS_2$ transistors" Nature Nanotech., 6, 147-150 (2011).
Y. Liu, N. O. Weiss, X. Duan, H.-C. Cheng, Y. Huang, and X. Duan, "Van der Waals heterostructures and devices" Nature Reviews Materials 1, 16042 (2016)
D. Jena, "Tunneling transistors based on graphene and 2-D crystals", Proceeding of the IEEE 101, 1585-1602(2013).
M. Chhowalla, D. Jena, and H. Zhang, "Two-dimensional semiconductors for transistors" Nature Reviews Materials 1, 16052 (2016)
S. Manzeli, D. Ovchinnikov, D. Padquier, O. V. Yazyev, and A. Kis, "2D transition metal dichalcogenides" Nature Reviews Materials 2, 17033 (2017)
M. Akhtar, G. Anderson, R. Zhao, A. Alruqi, J. E. Mroczkowska, G. Sumanasekera and J. B. Jasinski, "Recent advances in synthesis, properties, and applications of phosphorene" npj 2D Mater. Appl. 1, 5 (2017).
D. Akinwande, N. Petrone, and J. Hone, "Two-dimensional flexible nanoelectrocnics" Nature Commun. 5:5678 (2014)
F. K. Perkins, A. L. Friedman, E. Cobas, P. M. Campbell, G. G. Jernigan, and B. T. Jonker, "Chemical vaper sensing with monolayer $MoS_2$ ", Nano Lett. 13, 668-673 (2013).
H. Choi, J. S. Choi, J.-S. Kim, J.-H. Choe, K. H. Chung, J.-W. Shin, J. T. Kim, D.-H. Youn, K.-C. Kim, J.-I. Lee, S.-Y. Choi, P. Kim, C.-G. Choi, and Y.-J. Yu, "Flexible and transparent gas molecule sensor integrated with sensing and heating graphene layers", Small 10, 3685-3691 (2014)
S. Cui, H. Pu, S. A. Wells, Z. Wen, S. Mao, J. Chang, M. C. Hersam, and J. Chen, "Ultrahigh sensitivity and layer-dependent sensing performance of phosphorene-based gas sensors" Nature Commun. 6:8632 (2015)
F. Schedin, A. K. Geim, S. V. Morozov, E. W. Hill, P. Blake, M. I. Katsnelson, and K. S. Novoselov, "Detection of individual gas molecules adsorbed on graphene", Nature Mater. 6, 652-655 (2007).
J. T. Robinson, F. K. Perkins, E. S. Snow, Z. Wei, and P. Sheehan, "Reduced graphene oxide molecular sensors" Nano Lett. 8, 3137-3140 (2008)
K. Toda, R. Furue, and S. Hayami, "Recent progress in applications of graphene oxide for gas sensing: A review" Analy. Chem. Acta 878, 43-45 (2015)
Y. Guo, B. Wu, H. Liu, Y. Ma, Y. Yang, J. Zheng, G. Yu, and Y. Liu, "Electrical assembly and reduction of graphene oxide in a single solution step for use in flexible sensors" Adv. Mater. 23, 4626-4630 (2011)
W. Li, X. Geng, Y. Guo, J. Rong, Y. Gong, L. Wu, X. Zhang, P. Li, J. Xu, G. Cheng, M. Sun, and L. Liu, "Reduced graphene oxide electrically contacted graphene sensor for highly sensitive nitric oxide detection" ACS Nano 5, 6955-6961 (2011)
L. T. Duy, T. Q. Trung, A. Hanif, S. Siddiqui, E. Roh, W. Lee, and N.-E. Lee, "A stretchable and highly sensitive chemical sensor using multilayered network of polyurethane nanofibers with self-assembled reduced graphene oxide" 2D Mater. 4, 025062 (2017)
Y. Dan, Y. Lu, N. J. Kybert, Z. Luo, and A. T. C. Johnson, "Intrinsic response of graphene vapor sensors", Nano Lett. 9, 1472-1475 (2009)
B. Kumar, K. Min, M. Bashirzadeh, A. B. Farimani, M.-H. Bae, D. Estrada, Y. D. Kim, P. Yasaei, Y. D. Park, E. Pop, N. R. Aluru, and A. Salehi-Khojin, "The role of external defects in chemical sensing of graphene field effect transistors" Nano. Lett. 13, 1962-1968 (2013).
J. Martin, N. Akerman, G. Ulbricht, T. Lohmann, J. H. Smet, K. von Klitzing, and A. Yacoby, "Observation of electron-hole puddles in graphene using scanning single-electron transistor" Nature Phys. 4, 144 (2008)
C. R. Dean, A. F. Young, I. Meric, C. Lee, L. Wang, S. Sorgenfrei, K. Watanabe, T. Taniguchi, P. Kim, K. L. Shepard, and J. Hone, "Boron nitride substrates for high-quality graphene electronics" Nature Nanotech. 5, 722 (2010)
J. Xue, J. Sanchez-Yamagishi, D. Bulmash, P. Jacquod, A. Deshpande, K. Watanabe, T. Taniguchi, P. Jarillo-Herrero, and B. J. Leroy, "Scanning tunneling microscopy and spectroscopy of ultra-flat graphene on hexagonal boron nitride" Nature Mater. 10, 282 (2011)
P. Yasaei, B. Kumar, R. Hantehzadeh, M. Kayyalha, A. Baskin, N. Repnin, C. Wang, R. F. Klie, Y. P. Chen, P. Kral, and A. Salehi-Khojin, "Chemical sensing with switchable transport channels in graphene grain boundaries" Nature Commun. 5:4911 (2014)
S. Y. Jeong, S. Jeong, S. W. Lee, S. T. Kim, D. Kim, H. J. Jeong, J. T. Han, K.-J. Baeg, S. Yang, M. S. Jeong, and G.-W. Lee, "Enhanced response and sensitivity of self-corrugated graphene sensors with anisotropic charge distribution" Sci. Rep. 5:11216 (2015)
J. D. Fowler, M. J. Allen, V. C. Tung, Y. Yang, R. B Kaner, and B. H. Weiller, "Practical chemical sensors from chemically derived graphene" ACS Nano 3, 301-306 (2009)
S.-Y. Cho, S. J. Kim, Y. Lee, J.-S. Kim, W.-B. Jung, H.-W. Yoo, J. Kim, and H.-T. Jung, "Highly enhanced gas adsorption properties in vertically aligned $MoS_2$ layers" ACS Nano 9, 9314-9321 (2015).
D. J. Late, Y.-K. Huang, B. Liu, J. Acharya, S. N. Shirodkar, J. Luo, A. Yan, D. Charles, U. V. Waghmare, V. P. Dravid, and C. N. R. Rao, "Sensing behavior of atomically thin-layered $MoS_2$ transistors" ACS Nano 7, 4879-4891 (2013)
B. Cho, M. G. Hahm, M. Choi, J. Yoon, A. R. Kim, Y.-J. Lee, S. -G. Park, J.-D. Kwon, C. S. Kim, M. Song, Y. Jeong, K.-S. Nam, S. Lee, T. J. Yoo, C. G. Kang, B. H. Lee, H. C. Ko, P. M. Ajayan, and D. -H. Kim, "Charge-transfer-based gas sensing using atomic-layer $MoS_2$ " Sci. Rep. 5:8052 (2015)
B. Cho, A. R. Kim, D. J. Kim, H.-S. Chung, S. Y. Choi, J.-D. Kwon, S. W. Park, Y. Kim, B. H. Lee, K. H. Lee, D.-H. Kim, J. Kim, and M. G. Hahm, "Two-dimensional atomic-layered alloy junctions for high-performance wearable chemical sensor" ACS Appl. Mater. Interfaces 8, 19635-19642 (2016)
N. Huo, S. Yang, Z. Wei, S.-S. Li, J.-B. Xia, and J. Li, "Photoresponsive and gas sensing field-effect transistors based on multilayer $WS_2$ naoflakes" Sci. Rep. 4:5209 (2014)
Q. He, Z. Zeng, Z. Yin, H. Li, S. Wu, X. Huang, and H. Zhang, "Fabrication of flexible $MoS_2$ thin-film transistor arrays for practical gas-sensing applications" Small 8, 2994-2999 (2012)
S. Mao, G. Lu, and J. Chen, "Nanocarbon-based gas sensors: progress and challenges" J. Mater. Chem. A 2, 5573-5579 (2014)
K. Y. Ko, J.-G. Song, Y. Kim, T. Choi, S. Shin, C. W. Lee, K. Lee, J. Koo, H. Lee, J. Kim, T. Lee, J. Park, and H. Kim, "Improvement of gas-sensing performance of large-area tungsten disulfide nanosheets by surface functionalization" ACS Nano 10, 9287-9296 (2016)
M. G. Chung, D. H. Kim, H. M. Lee, T. Kim, J. H. Choi, D. K. Seo, J.-B. Yoo, S.-H. Hong, T. J. Kang, Y. H. Kim, "Highly sensitive $NO_2$ gas sensor based on ozeone treated graphene" Sens. Actuators B: Chem. 166-167, 172-176 (2012)
O. S. Kwon, S. J. Park, J. -Y. Hong, A.-R. Han, J. S. Lee, J. S. Lee, J. H. Oh, and J. Jang, "Flexible FET-type VEGF aptasensor based on Nitrogen-doped graphene converted from conducting polymer" ACS Nano 2, 1486-1493 (2012)
W. Yuan, A. Liu, L. Huang, C. Li, and G. Shi, "High-performance $NO_2$ sensors based on chemically modified graphene" Adv. Mater. 25, 766-771 (2013)
Y. H. Kim, S. J. Kim, Y.-J. Kim, Y.-S. Shim, S. Y. Kim, B. H. Hong, and H. W. Jang, "Self-activated transparent all-graphene gas sensor with endurance to humidity and mechanical bending" ACS Nano 9, 10453-10460 (2015)
G. S. Kulkarni, K. Reddy, W. Zang, K. Lee, X. Fan, and Z. Zhong, "Electrical probing and tuning of molecular physisorption on graphene" Nano Lett. 16, 695-700 (2016)
S.-J. Choi, S.-J. Kim, J. -S. Jang, J.-H. Lee, and I.-D. Kim, "Silver nanowire embedded colorless polyimide heater for wearable chemical sensors: Improved reversible reaction kinetics of optically reduced graphene oxide" Small 12, 5826-5835 (2016)
S. Rumyantsev, G. Liu, M. S. Shur, R. A. Potrailo, and A. A. Balandin, "Selective gas sensing with a single pristine graphene transistor" Nano Lett. 12, 2294-2298 (2012).
S. Some, Y. Xu, Y. Kim, Y. Yoon, H. Qin, A. Kulkarni, T. Kim, and H. Lee, "Highly sensitive and selective gas sensor using hydrophilic and hydrophobic graphene" Sci. Rep. 3:1868 (2013)
A. K. Geim, and I. V. Grigorieva, "Van der Waals heterostructures" Nature 499, 419-425 (2013)
G. Liu, S. L. Rumyantsev, C. Jiang, M. S. Shur, and A. A. Balandin, "Selective gas sensing with h-BN capped $MoS_2$ heterostructure tin-film transistors" IEEE Elect. Dev. Lett. 36, 1202-1204 (2015)
H. K. Choi, J. Park, N. Myoung, H.-J. Kim, J. S. Choi, Y. K. Choi, C.-Y. Hwang, J. T. Kim, S. Park, Y. Yi, S. K. Chang, H. C. Park, C. Hwang, C.-G. Choi, and Y.-J. Yu, "Gas molecule sensing of van der Waals tunnel field effect transistors", Submitted (2017)
※ AI-Helper는 부적절한 답변을 할 수 있습니다.