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A Review on the Application of Nanotechnology in Food Processing and Packaging
Seong-In Cho,Yong-Rok Kim,Joon Woo Lee,Dae-Sup So,Yong-Jin Cho,Hyun Kwon Suh,Tu San Park,Seoung-Im Oh,Ji-Eun Im 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.4
Currently, nanotechnology is widely applied in various industrial fields and is rapidly emerging as a promising future technology. In food industries, nanotechnology is used to enhance food quality and safety. Numerous cutting-edge studies on the advantages of nanotechnology have been conducted in the fields of food processing, food ingredients and additives, food packaging, and food engineering for optimal health. The market for these areas of research has grown steadily, and is expected to continue to do so. Because of this, R&D for nanotechnology that can be used effectively in food industries is being performed by several companies, as well as in academic research institutions around the world. This review describes the recent global R&D trends that have been in progress for two key areas: food processing and food packaging.
A Review on the Application of Nanotechnology in Food Processing and Packaging
( Seong In Cho ),( Yong Rok Kim ),( Joon Woo Lee ),( Dae Sup So ),( Yong Jin Cho ),( Hyun Kwon Suh ),( Tu San Park ),( Seoung Im Oh ),( Ji Eun Im ) 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.4
Currently, nanotechnology is widely applied in various industrial fields and is rapidly emerging as a promising future technology. In food industries, nanotechnology is used to enhance food quality and safety. Numerous cutting-edge studies on the advantages of nanotechnology have been conducted in the fields of food processing, food ingredients and additives, food packaging, and food engineering for optimal health. The market for these areas of research has grown steadily, and is expected to continue to do so. Because of this, R&D for nanotechnology that can be used effectively in food industries is being performed by several companies, as well as in academic research institutions around the world. This review describes the recent global R&D trends that have been in progress for two key areas: food processing and food packaging.
A solution method for the large scale production of multiwall carbon nanotubes
Dae-Sup So,Haiwon Lee,김우식,Bong Geun Choi,방신영,Heon Ham,심광보 한양대학교 세라믹연구소 2009 Journal of Ceramic Processing Research Vol.10 No.2
Large scale production of multiwall carbon nanotubes (MWCNTs) has been achieved by a solution method. A heated bubble chamber is used as a hydrocarbon source from liquid n-hexane, and a Fe catalyst precursor is prepared by Fe(CO)5 which is dissolved into the n-hexane. The temperature and dissolved Fe concentration in the n-hexane have influences on the synthesis of MWCNTs. The synthesized MWNTs are collected by an electromagnet. SEM shows the diameters of MWNTs are in the range of 20-60 nm and are several micrometres in length.
Continuous mass production system of carbon nanotubes synthesis and processing
Dae-Sup So,Heon Ham,최봉근,심광보,김우식,방신영,이해원 한양대학교 세라믹연구소 2009 Journal of Ceramic Processing Research Vol.10 No.1
High purity multiwall carbon nanotubes (MWCNTs) were synthesized by a continuous mass production apparatus using a catalyst vapor deposition method. The continuous mass production apparatus consisted of a moving heater and a gas decomposer, and this continuous mass production apparatus of carbon nanotubes shows the possibility of industrial scale production of carbon nanotubes. The MWNTs have lengths of several micrometres and diameters in the range of 20 to 60 nm with over 90% purity, a straight and smooth structure. Their Raman spectrum shows two strong peaks at 1569 and 1334 cm−1.
Electrical impedance properties of carbon nanotube composite electrodes for chemical and biosensor.
So, Dae-Sup,Kang, Inpil,Huh, Hoon,Lee, Haiwon American Scientific Publishers 2010 Journal of nanoscience and nanotechnology Vol.10 No.5
<P>Electrical impedance properties of different type of carbon nanotubes based bulk electrodes have been investigated to develop chemical and biosensors. The bulk composite electrodes were fabricated with single-wall and multi-wall carbon nanotubes involving ionic conducting host polymer, Nafion, by using traditional solution-casting techniques. Under the various amounts of buffer solution, resistance and capacitance of the electrodes were measured with LCR meter and their characteristics due to ionic conducting host polymer were investigated by means of electrokinetic analysis. The capacitance values showed drastic change while the resistances only changed within few percent ranges. Electrical impedance measurement provided rapid and simple sensing mechanism to develop chemical sensor and biosensors with bulk nano electrodes.</P>
탄소나노튜브 기반 벌크 소재의 전기적 임피던스 특성을 이용한 생화학 센서용 전극 개발 연구
소대섭 ( Dae Sup So ),허훈 ( Hoon Huh ),김희진 ( Hee Jin Kim ),이해원 ( Hai Won Lee ),강인필 ( In Pil Kang ) 한국공업화학회 2010 공업화학 Vol.21 No.5
본 연구에서는 대량 생산 가능한 센서 전극의 생화학 센서 전극 개발을 위하여 탄소나노튜브(carbon nanotube, CNT)를 복합재료화 공정에 의하여 필름과 나노웹 형태의 벌크 재료로 제작한 후, 이들 전극의 넓은 표면적과 뛰어난 화학적 흡착성을 이용하여 화학적 검출 대상에 노출이 되었을 때 이들로 인한 센싱 특성을 연구하였다. CNT 기반 벌크 전극으로 제작하기 위하여 Nafion을 기저재료로 하는 필름과 PAN 기반의 나노 파이버를 전기방사법에 의하여 제작을 한 후 이들 전극의 화학적 영향에 의한 전기적인 특성 변화 실험을 위하여 버퍼 용액의 정전용량에 대한 전기적 임피던스 요소 값인 저항과 정전용량의 변화를 LCR 계측기로 측정하였다. 생화학센서용 전극으로서 CNT벌크전극의 임피던스 변화 형태가 복합소재 전극의 기저재료에 따라 달리 나타났으며 일정량의 버퍼용액 투여 후에는 변화가 없는 포화상태의 응답을 보였으며 특히, 정전용량이 저항에 비하여 상대적으로 급격하게 큰 변화를 보여 높은 감도 특성을 지니고 있음이 조사되었다. 이들의 전기적인 특성변화는 버퍼 용액의 화학적 성분들이 전극에 흡수 된 후에 CNT에 흡착이 되어 이들의 전기적인 특성을 변화 시키는 것으로 추론된다. To develop chemical and biosensors, this paper studies sensing characteristics of bulk carbon nanotube (CNT) electrodes by means of their electrical impedance properties due to their large surface area and excellence chemical absorptivity. The sensors were fabricated in the form of film and nano web style by using composite process for mass production. The bulk composite electrodes were fabricated with singlewall and multi-wall carbon nanotubes based on host polymers such as Nafion and PAN, using a solution-casting and an electrospinning technique. The resistance and the capacitance of electrodes were measured with LCR meter under the various amounts of buffer solution to study the electrical impedance change properties of them. On the experimental of sensor electrode, impedance characteristics of the composite electrode are affected by its host polymer and nanofiller and its sensing response showed saturated result after applying some amounts of buffer solution for test chemical. Especially, the capacitance values showed drastic changes while the resistance values only changed within few percent range. It is deduced that the ions in the solution penetrated and diffused into the electrodes surface changed the electrical properties of the electrodes much like a doping effect.
소대섭(So Dae-Sup),김경호(Kim Kyung-Ho),이호신(Lee Ho-Shin),최붕기(Choi Boong-Kee) 한국콘텐츠학회 2004 한국콘텐츠학회 종합학술대회 논문집 Vol.2 No.2
본고는 국내 나노기술 분야의 정보지원 현황 및 향후 정보 수요에 대한 연구를 수행한 것으로서, 나노기술전문가 500여명을 대상으로 설문 조사를 통하여 나노기술 정보자원 현황 조사, 나노기술 수집현황 조사, 나노기술 정보수요 조사 등을 실시하였고, 이를 기술 분야별, 콘텐츠 종류별로 분석 연구하였다. 또한 정보 이용자들의 정보 활용도 및 만족도를 연구하였다. 본 연구를 통해서 나노기술정보 활용 방안과 전문콘텐츠 제작을 위한 방향을 설정하고 나아가 나노기술 정보정책을 수립하는데 유용한 제안을 도출하고자 한다. This study shows the status quo of domestic information resources and future information demand in nanotechnology area. For this a wide range of survey through questionnaire was conducted on the present status of information resources, information collecting activities and information demand according the specific fields of nanotechnology and kinds of contents. In addition the information usage behavior and satisfaction of information users was also studied. This study gives some useful suggestions on the strategy of information use and the direction of building contents as well as the policy making of nanotechnology information.
소대섭 ( Dae Sup So ) 한국공업화학회 2022 공업화학전망 Vol.25 No.5
4차 산업혁명의 중요 요소로서 인공지능(AI, Artificial Intelligence)은 이미 산업뿐 아니라 인간의 삶 자체를 변화시키는 핵심 기술로 등장했으며, 기업과 국가 및 개인의 경쟁력을 좌우할 것으로 예상된다. 화학 및 소재 분야에서도 AI의 활용이 크게 증가하고 있다. 신물질·신소재의 설계나 개발, 공정의 최적화, 물성 분석 및 예측 등 여러 분야에서 적용이 확대되고, 관련 연구가 진행되고 있다. 현재 한국은 양적인 측면에서는 세계 7위 수준을 나타내고 있다. 정부출연(연)을 중심으로 화학·소재의 데이터베이스(DB)와 서비스 플랫폼을 구축하고, 다수의 주목되는 연구 성과를 내고 있다. 본 고에서는 AI의 개념과 중요성을 살펴보고, 공업화학 분야에서 AI를 적용한 현황을 조망하였다. 이를 바탕으로 관련 기술의 발전을 위한 연구와 정책 방향을 제언하고자 한다.