CINXE.COM
Just a moment...
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '9136816eebe29cb9',cH: 'YQRS5AIlmpqtRlxoOA2BJkU.nAtPwg2aklaWCxQ0nJo-1739802943-1.2.1.1-Fmn4h6wHrI_QsX2K7THu2iIBb8aj0BzTlOE025ZtNDT7EFE6nN9d_oJTosgDmUPY',cUPMDTk: "\/abstracts\/22253\/studies-on-h2s-gas-sensing-performance-of-al2o3-doped-zno-thick-films-at-ppb-level?__cf_chl_tk=Kl6mY6HdnBxvnARTyZKpu572E.c6_t4cbnIJUXX9awc-1739802943-1.0.1.1-SRGlB1tW7Mpsliaz9TXFNR1ow0FaOvCYQkr0fsGVcTY",cFPWv: 'g',cITimeS: '1739802943',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/22253\/studies-on-h2s-gas-sensing-performance-of-al2o3-doped-zno-thick-films-at-ppb-level?__cf_chl_f_tk=Kl6mY6HdnBxvnARTyZKpu572E.c6_t4cbnIJUXX9awc-1739802943-1.0.1.1-SRGlB1tW7Mpsliaz9TXFNR1ow0FaOvCYQkr0fsGVcTY",md: "1RVvDdIAZyORogdQ3kBF4ygySSIJxztd.swUlQYiVYk-1739802943-1.2.1.1-cx7rynQfID4bMeRLDJDj7zryu5XbbDTUjjZNcUVAsGGrAm8au9EH2LeDCigJvBIGpVOv4crI2udlhNd7L9V7U3uyS4YtGr8P9CK7h9JvfQjiPRBtFwFm7fV98P6czBa.uVu80_Ym2gw0vjOsrq5mxCtNSPXlZQjMs6ytsYrC72GcVMysL39469Kehpaaw_h800P495KpmGxgNadGJ4_2W1PyPGE55FR000aZNHgbyZjl9dGoZI3IOyJNgnx8xnikcQSNTpJQAJqEhS1SyeUYNyWmclAt1pe440.fti7dcRZiCwmhDQjdGyjHWFjkY435yMrATrU1wutYNanz4D5K.iuw9xxKQUyznlPW0D12fsFjZndRH6BdwtkbpSZKdZyzbfegSMBtJ5KjHx5yF_nkdgf49EF9.rTUf76K7w6gZWIVJllpD9XWBHREwdtYeBTVAf7UDkbf0tcUi4kc06jcZTS32zGF_DLDNzdQa2wHq_WkRn2m6uc_d0dzh138m2yC3hJe.ZpMFqNB0HdTQ5nqbXwlc8pIYqfrQZ_43KOclTrwxhwCsFDVzdHGGIvCOABDbVaJ8fHVxrfWua3tqxu4l1d8nPP7MUwkE_D02Q73nsNUH5Phs1YcOsvACkmVe4JUShgy5zheFTzy_ha6.3HgT0trnAkgMACwBO_5WhiJuwqzQp3Fwzi2YYUZyIrgmKEr9VrNcxmCZpg1GJCvK2NjA52HPpiz0z94_BMKH7G14CIJjRN0UT2iNdcXQspvSmwEYickwkng37Zq4hF9mP9Q_hXc3OTR7erXKeNZylgTbKFHANRWE59_KQMyeSGZ8Cpo5xFseT7eKjwgYA9yX7IuPU0RebU7BVTLgi2UfcN4cHb6myUSnfVuhNZShdBdaRbaiyzE.lpDAYG4DFCnjCDYvnEBc_APLDh7WXln8uT8dBFtqOYRL.VRVwtccykIk6_hjXRi0by1LvxpAE_WcPywlwm94NhKydxhtkFPbeofWG566B4pD5.7MdkdFj9vVkpaClxo3NXH28mzrKSHS4dUrAk0fiEDZ7RPRBY7ZeCGdtBB55gB3PdEQBH4hchYYzZjSLxZ4VOJ5HnT6ESoP1qS4XYIZOu9wTFgJtqIJfoXgAR9N3n0gOz.UMA0ygRjPbmr8puzuKKbWvf52zmeqrPVZnZ61CCyNDCrUphRudKJRq8uVoM7dCElWveGOGf.WduSZUqEt0gQSDY05KDGqU0MZJeqnEoHl4jjHYqEsF5aSI6qcd7Jc5nRWhE6pJWUW07vFFP8x2DBoyM369Y9PRH.Sxmkv3ZKagNKgQ4r0HZlGQuER.NLMPWnYRP8tMwhNFPnxQqsFhVd8_XhcoWeV4_DeoxI6NyizK9h8vrWXSafWom9hzQKgbr1UP2Oc2shvCYN_UD38m0WIGP1asUhfEx_zzOVcEJhlj5OttnAkm9aTaFwtD6LCu8YtaamNQzdZnbnwOazk.2Od0JHaWnKha9Nsz0G1L6fXewikmAXq2uzPOLXbj8fHN_FG6Wwc5H9Ks_YjH9V9pyvlAHiPI9NLhyalc6j_HW3h3FEjdJkGFeT_VDi8QJFtMbJuN6To_HuSDtEIY5IBsC4ZN9LXUzPE0ZhyWvS2ilqR06QeID_oj.yWJZPKFPU9e1gEQZa38mwDgTB_tBCoQXBoHp5krhqUi2yQGjKpSYgXjukFub21fwNjOfyzVoRf.YZemGCfGjzd7mwDgVNLrTexcKfPBhZIfeKZGfRMx8gHe7ix2DqQ126FwjZLKHS48V99WFG5cfEBg2Vc4rrP_lDTSeY1OiyUu6uL8Hu0Cr_ZMzHoCa48H7cuzbADxf2kDY.WV8.uiHRPY_5FiEQIVhePDQbit_647jEWb5wRI3OXQzyl5lvZXlTU04tHCOSzVZCGZ4MAWWecXywBn6bFuxXviXCXtRdV7jWq408ePpSVf6Sy9FCwHW8p0.U5ZlmUV2b0Du4plTK6dRnWhGzC9lONAvT.S.s3CGCc3gMI8ndwT9XmQ3aQKWU8o_cwXs2p4D5LLLXdjPAZI14_g0G6M.VQZct4M4NlukIkDRsCls5v3C8tx6eblIQTio8ia1caASC4DsO2TrAZuYwDJsr6H0hH0hkYkQmPxSzTw",mdrd: "AiyPgDB0_nDC5aVm4VZMy5z3.UsiWn7nZ7BQ21mxKsQ-1739802943-1.2.1.1-P3lKTJZEYzosuP3ANBSmm8yG4jWuIO6TQmnEUxunB9PjJHCJQOYyJb4QCNybb1xveDRQHlKUcECt8l3vu6Y2noiJc7QKPkWVLRw_XCyiaQ14PoyODJXbDL_LyL_Um5B0B7p62BK5K7uWsupB20IHo9GGyzTE7ZmIqXpU9FvNfoLVzdmCyLWFaxmV4RgSj4EjZcC20E_1GxY4XpFMV_5uQUF.U2UTf1VHfc0nXqVfPBu0bVhqwFMzivuWeE4IwzSLtozAmv5dtUYJxS.s1..ia7J6w3QJtKhUODrhU7bSkq9kdL04NUsbuojTXCXqmbVHDjtX3IuVoiWt3TeUiLLl29f5m71BE8jQU4X3VxCNs8FzSUhc4seXruhLfhyV58XGdqUGjenZ6ABr2LdMaGpemEll3_d3kevz39P_XECE5SFmSafTUad9vU4B_YWg78wpg410wHMJFqmWx04CYy397751qTRfNr64n.pDu_VFxqJQRPLxcgMnek.LGfWxYMny8ILPD7Snr_wi83nXdhFRBxKnBhr_akaSG5Qvf94P3Q0XDmL2qu7ObPFFDPohEzLWbNQ7B2kxHwiBWN96rfh5OO48JOGAWCs4zHfyU7m7_Ak7bDgmcDzfUfhHN82UhxoFf3eXJc4QP6mh7jXE2FHQmeTD1wsjrevDxLZhLb5rHVZta7eFetxYPh04sedYTVdyylIBl9Q2NmV2YBEfZmHk60rsffO50cYsYrfI6aFFJxz70UEvTWTd_d1rWit3XzJdo8TvgM1akR8KmpFo2LuZlxRc7kGSUa.ZhORbHt5N_SI8AxXELaURXyXZjFUZGbDOqHT_pjzi4Yt3MfQZiThcehw0YbpG7fMObiV405H62dqaVEXxN1yPqk2.TSLFA.pceeF1hu8SiU_n_iMuxQfXxoaLS9JBn_g2H0p5Gzh4YNDoMvhpyrQroz9wLrtBXyySpWDZs56htp5xarnPv8dLWTqHVLL5UNH8rnxy.hWe2gf9wVN.W_U6IJOuO4UxagyB1QTI1445Wdq34wDYxW6kQn1N95gIa.zSAGzJB.fOlKtRj6V2Xpc.7XjFgBKGBAZPPkRTLeTEzwvnR7t.lghY3VQS8FIdFJGxoSChdb5O3XFKnkWx796klry1s_EpIBZvO4rFncScHrrnM9t5UOJ5k4XGJkgKSYgZrIzMSBZ.u8Ys54j.iBOY6yFuYE3RiX3_uzyty1mHhGgEVtIWsOaTGcsrbx.240r0pk5VEwThwLHJ9qRKFzYrFfwu25wuMtCvTapT41rHK6svopCkMqC7bqCl7Hak83F4ZK50P3NNroTIDH_PBo5LER0jmWtT8QQ5BMnpvXLG4QvvLMloJkO8QVAuJksGXhbPKRZhn54887c9grEGIUJtKaqcWntZIdrdm9Cp4zTHrT0oht0IRVyh9i.KnrkX1RamLB6.oHwDwqMZjcvfHITDWrmRvjqU8MNgUgw4nOgyGLAO6jPTjd0Jf2FBf.eo5MGgFFJulUF0BC8M3L0tp6feCS1FeE8Ci8QaXfiBLLITWExo7VZ.AayXUgTO3qY5QbalV9sZhYeO1WVVVCvO2KwpmI_zW1TfvuV9v0eVLL1qd9gFeXYsTczTXqQjDLGXGavbo.rpjBX.ay2PSPwJWjkeVFtFZSvxkTx4NkKcR63xPh.HFsKFNVVW2JP3g7zL1JdAlD0lA3IBwGvYlXt9i22pMxEo0YyydOsMI2eGZuhN1Rf3hfRmeipnyJ0dd2m1ArMZqHbF2jz4uVgQRkflNKmxwNiaF0.h8t3gyUZCIebGgyLoVWHnNUxNuz12iKXp4Pjr9eWZla_LexDHqDlF69D6meDplywYQXhCHYAOy.l.kZ9zd5prpcZlkOHlAXO8EQ6d9ZO2ER3G1DeXA2Z5wEGU0yJPyjl5JTlDr.3thweLIqBbvhNo6aMz8CKzM.MAuz1evayUjX3fLoOupi.0Xa87YEnBqEyXKPS9ohOmhaY8cvUPESmxxs8_FQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9136816eebe29cb9';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/22253\/studies-on-h2s-gas-sensing-performance-of-al2o3-doped-zno-thick-films-at-ppb-level?__cf_chl_rt_tk=Kl6mY6HdnBxvnARTyZKpu572E.c6_t4cbnIJUXX9awc-1739802943-1.0.1.1-SRGlB1tW7Mpsliaz9TXFNR1ow0FaOvCYQkr0fsGVcTY" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>