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Son, Yong,Yeo, Junyeob,Moon, Hanul,Lim, Tae Woo,Hong, Sukjoon,Nam, Koo Hyun,Yoo, Seunghyup,Grigoropoulos, Costas P.,Yang, Dong‐,Yol,Ko, Seung Hwan WILEY‐VCH Verlag 2011 ADVANCED MATERIALS Vol.23 No.28
<P><B>A digital, direct nanoscale metal patterning method</B> is developed using femtosecond laser digital processing of metal nanoparticles for nanoscale electronics fabrication without using conventional vacuum deposition or a photolithography mask. This method is expected to be a potential alternative to the conventional electron beam lithography method for arbitrary nanoscale direct patterning in single‐step, low‐temperature, and non‐vacuum environments.</P>
Effects of Industrial By-products on Reducing Heavy Metal Leaching in Contaminated Paddy Soil
Oh, Se Jin,Oh, Seung Min,Kim, Sung Chul,Ok, Yong Sik,Ko, Tae Yol,Ji, Won Hyun,Yang, Jae E. 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.1
Soil contamination with arsenic and heavy metals is a worldwide problem. Main objective of this research was to evaluated effects of reducing heavy metal leaching under reduced soil condition amended with industrial by-products. The contaminated soil was amended with 3% (w/w) of limestone (Ls), steel slag (SS) and acid mine drainage sludge (AMDS). Synthetic acid rain ($H_2SO_4:HNO_3=6:4$, pH 5.5 fixed) was used for feeding solution with flow rate of $0.78{\sim}0.88mL\;min^{-1}$. Results showed that similar pH and EC of leachate was observed in all treatments regardless of applied industrial by-products. However, arsenic concentration of leachate increased when industrial by-products were mixed. Meanwhile, concentration of heavy metal in the leachate decreased from 11.3 to 4.59 mg for Cd, from 92.3 to 7.93 mg for Pb, and from 11,716 to 1,788 mg for Zn via immobilization in soil with AMDS amended, respectively. Overall, application of industrial by-products can be an environmentally-friendly way to remediate soil and(or) leachate contaminated with metal(loid)s in metal mine site.