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Soft, thin skin-mounted power management systems and their use in wireless thermography
Lee, Jung Woo,Xu, Renxiao,Lee, Seungmin,Jang, Kyung-In,Yang, Yichen,Banks, Anthony,Yu, Ki Jun,Kim, Jeonghyun,Xu, Sheng,Ma, Siyi,Jang, Sung Woo,Won, Phillip,Li, Yuhang,Kim, Bong Hoon,Choe, Jo Young,Huh National Academy of Sciences 2016 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.113 No.22
<P>Power supply represents a critical challenge in the development of body-integrated electronic technologies. Although recent research establishes an impressive variety of options in energy storage (batteries and supercapacitors) and generation (triboelectric, piezoelectric, thermoelectric, and photovoltaic devices), the modest electrical performance and/or the absence of soft, biocompatible mechanical properties limit their practical use. The results presented here form the basis of soft, skin-compatible means for efficient photovoltaic generation and high-capacity storage of electrical power using dual-junction, compound semiconductor solar cells and chip-scale, rechargeable lithium-ion batteries, respectively. Miniaturized components, deformable interconnects, optimized array layouts, and dual-composition elastomer substrates, superstrates, and encapsulation layers represent key features. Systematic studies of the materials and mechanics identify optimized designs, including unusual configurations that exploit a folded, multilayer construct to improve the functional density without adversely affecting the soft, stretchable characteristics. System-level examples exploit such technologies in fully wireless sensors for precision skin thermography, with capabilities in continuous data logging and local processing, validated through demonstrations on volunteer subjects in various realistic scenarios.</P>
( Sanggyun Kim ),( Soyoung Lee ),( Doosup Kim ),( Junseop Yeom ),( Sae Yong Lee ),( Scott A. Banks ) 한국체육학회 2019 International journal of human movement science Vol.13 No.2
We aimed to identify 3D motion differences in knee joint articular surface kinematics in healthy young and old participants during weight-bearing knee flexion. Twelve healthy male volunteers, six in their 60s and six in their 20s, without any musculoskeletal system disease involving the knees participated. 3D bone models of the femur and tibia were obtained using CT and matched into the fluoroscopic images captured during split squatting. Translation and rotation of the tibia to the femur during weight-bearing flexion were compared between the groups. Translation of the nearest medial-lateral articular surface location and rotational angle of medial-lateral connecting lines were also compared. As the tibial internal-external rotation angle and medial contact point anterior-posterior translation were significantly correlated between the groups, they could not represent the characteristics of age-related changes. Similar to lateral contact point translation and contact points line angles were significantly different during the initial 10° flexion period. At the 40°-45° knee flexion period, a significant difference was detected in the contact point line angle and in the tibial superior-inferior translation. 3D knee joint kinematic differences between participants in their 20s and 60s, especially during initial and 40°-45° periods, can predict kinematic effects on age-related disease.
Kim, S.T.,Banks, K.C.,Pectasides, E.,Kim, S.Y.,Kim, K.,Lanman, R.B.,Talasaz, A.,An, J.,Choi, M.G.,Lee, J.H.,Sohn, T.S.,Bae, J.M.,Kim, S.,Park, S.H.,Park, J.O.,Park, Y.S.,Lim, H.Y.,Kim, N.K.D.,Park, W. Elsevier 2018 Annals of oncology Vol.29 No.4
<P>Conclusions: The present study showed that HER2+GC patients respond differently according to concomitant genomic aberrations beyond ERBB2, high ERBB2 amplification by NGS or cfDNA can be a positive predictor for patient selection, and tumor genomic alterations change significantly during targeted agent therapy.</P>
Seyam, Abdelfattah M.,Turner, LaDawnya C.,Banks-Lee, Pamela The Korean Fiber Society 2003 Fibers and polymers Vol.4 No.3
We have shown in Part I [1] of this study that medical needle-stick injuries are causing serious health problems to healthcare personnel and other professionals that require the attention of healthcare and textile researchers to develop new protective systems. Responding to such need, a needle force measurement device that is capable of measuring dynamic forces experienced by medical needles during needle penetration through protective articles was developed and described in part I. This paper reports the results of evaluation of protective woven fabrics from high performance fibers and standard and bifid medical needles using the force measurement system. The woven fabrics varied in cover factor, number of layers, and orientation angle. Standard and bifid needles with different gap widths were used to evaluate the resistance of the fabric to needle penetration.
Protective System from Medical Needle-sticks. Part I: Background and System Development
Turner, LaDawnya C.,Seyam, Abdelfattah M.,Banks-Lee, Pamela The Korean Fiber Society 2003 Fibers and polymers Vol.4 No.2
Previous research on healthcare workers’ protection has concentrated on liquid barrier protection by providing impermeable personal articles such as latex gloves. This property is of high importance but since most blood-borne pathogen transmissions in the healthcare industry are caused by needle-stick injuries, protection from sharp invasive instruments should also be of high concern. And since latex and alike provide no protection against needle-stick injuries, new protective systems need to be developed and evaluated. This part of the study provides a review regarding the current practice of protection and the serious problems that arise from needle-flick injuries. Additionally, the development of new protective system is described. In part II of the study, evaluation of the new system will be provided.
A soft, wearable microfluidic device for the capture, storage, and colorimetric sensing of sweat
Koh, Ahyeon,Kang, Daeshik,Xue, Yeguang,Lee, Seungmin,Pielak, Rafal M.,Kim, Jeonghyun,Hwang, Taehwan,Min, Seunghwan,Banks, Anthony,Bastien, Philippe,Manco, Megan C.,Wang, Liang,Ammann, Kaitlyn R.,Jang, American Association for the Advancement of Scienc 2016 Science Translational Medicine Vol.8 No.366
<P>Capabilities in health monitoring enabled by capture and quantitative chemical analysis of sweat could complement, or potentially obviate the need for, approaches based on sporadic assessment of blood samples. Established sweat monitoring technologies use simple fabric swatches and are limited to basic analysis in controlled laboratory or hospital settings. We present a collection of materials and device designs for soft, flexible, and stretchable microfluidic systems, including embodiments that integrate wireless communication electronics, which can intimately and robustly bond to the surface of the skin without chemical and mechanical irritation. This integration defines access points for a small set of sweat glands such that perspiration spontaneously initiates routing of sweat through a microfluidic network and set of reservoirs. Embedded chemical analyses respond in colorimetric fashion to markers such as chloride and hydronium ions, glucose, and lactate. Wireless interfaces to digital image capture hardware serve as a means for quantitation. Human studies demonstrated the functionality of this microfluidic device during fitness cycling in a controlled environment and during long-distance bicycle racing in arid, outdoor conditions. The results include quantitative values for sweat rate, total sweat loss, pH, and concentration of chloride and lactate.</P>
강릉지방의 오징어 식해 개발에 관한 연구 -4. 식해숙성에 미치는 고추가루 및 곡류 첨가량의 영향-
김상무,백운두,이근태,KIM Sang-Moo,BANK Oon-Doo,LEE Keun-Tai 한국수산과학회 1994 한국수산과학회지 Vol.27 No.4
고추가루 및 곡류 첨가량을 달리하였을 경우의 오징어 식해 숙성중의 일반성분변화를 측정하였다. 고추가루 첨가량을 달리하였을 경우의 일반성분의 변화에는 별다른 차이점은 없었으며, 곡류 $50\%$ 첨가비율에서 탄수화물량이 높게 측정되었는데 이는 원료의 배합비율에서 오는 것이라고 볼 수 있다. pH변화는 고추가루 $10\%$ 및 곡류 $30\%$ 첨가 비율에서 고추가루 $5\%$ 및 곡류 $50\%$ 보다 각각 숙성초기에 낮은 값을 나타내었으며 숙성기간이 증가할 수록 원료의 첨가비율에 따른 pH 변화는 거의 없었다. 젖산의 변화는 고추가루 첨가량에 따른 차이는 없었으며 단지 곡류 $30\%$ 비율에서 $50\%$ 비율보다 숙성초기에 젖산 생성량이 다소 많았으나 숙성 후기에는 별다른 차이가 없었다. 총 arginine량은 고추가루 $10\%$ 및 곡류 $30\%$ 첨가비율에서 고추가루 $5\%$ 및 곡류 $50\%$ 첨가비율보다 다소 높은 값을 나타내었으며, 숙성 10일까지 다소 증가경향을 보이다가 그 이후로 다소 감소하였는데 전체 숙성기간 중의 함량을 볼 때 큰 변화는 없었다고 보여진다. 고추가루 첨가량에 따른 TMAO및 TMA량의 변화는 거의 없었으며, 곡류 $30\%$ 첨가비율에서 $50\%$ 첨가비율보다 TMAO 및 TMA 량은 높은 값을 나타내었다. 따라서, 고추가루 및 곡류의 첨가량에 다른 식해 숙성중의 품질변화는 뚜렷하지 않았으며, 외관 등 관능적인 측면에서 보다 더 연구가 필요하다고 본다. The effects of red pepper and grain contents on the properties of squid sik-hae fermented at $20^{\circ}C$ were investigated. The values of pH at $10\%$ red pepper contents and $30\%$ grain contents were lower at early stages of storage than $5\%\;and\;50\%$, respectively, and showed no significant differences at later stages of storage. The amounts of lactic acid and amino-N were not changed significantly at different red pepper contents where as, higher at $30\%$ grain content than at $50\%$ at early stages of storage. The amounts of total arginine were a little higher at $10\%$ red pepper and $30\%$ grain contents than at $5\%\;and\;50\%$, respectively. There were no significant effects of red pepper and grain contents on the amounts of TMAO and TMA during fermentation. Therefore, the effects of red pepper and grain contents on the chemical properties of squid sik-hae during fermentation were not significant.