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2016 IEEE 11th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)最新文献

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Breath figure patterns prepared by spraying ultrasonic atomized water droplets 喷雾超声雾化水滴制备呼吸图形
Pengfei Zhang, Huawei Chen, Liwen Zhang, Tong Ran, Deyuan Zhang
Honeycomb-structured porous films have widely potential applications in chemical sensors, tissue engineering, micro reactors, catalysis and so forth. An enhanced breath figure method with spraying ultrasonic atomized water droplets replacing the water vapor in humidity is proposed to fabricate multi-level and large-area breath figure patterns (BFPs). Well-defined polyphenylene oxide honeycomb films were prepared at a proper spraying time. The pore size and the regularity of the hexagonal arrays could be regulated by changing solution concentration. Especially, honeycomb films with two-level pores were fabricated by spraying atomized water droplets two times. Moreover, large-area BFPs with film area larger than 100 cm2 could be formed on the glass substrate. The large-area BFPs formation capability of the enhanced BFM in this work give new insight into more widely application in surface engineering. For example, slippery surfaces were prepared using the large-area BFPs as the holding structures. And the prepared slippery surfaces showed extremely low critical sliding angles for water, and also demonstrated efficient self-cleaning property.
蜂窝状多孔膜在化学传感器、组织工程、微反应器、催化等方面具有广泛的应用前景。提出了一种用喷雾超声雾化水滴代替湿度中的水蒸气来制备多层次、大面积呼吸图的方法。在适当的喷涂时间,制备了性能良好的聚苯氧乙烯蜂窝膜。通过改变溶液浓度,可以调节六边形阵列的孔径和排列规律。特别是通过两次喷雾雾化水滴,制备了具有两级孔的蜂窝膜。在玻璃基板上可以形成膜面积大于100 cm2的大面积BFPs。本文研究的增强型BFM的大面积形成能力为其在地面工程中的更广泛应用提供了新的思路。例如,使用大面积BFPs作为支撑结构制备光滑表面。制备的光滑表面对水的临界滑动角极低,且具有良好的自清洁性能。
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引用次数: 1
Development of optically controlled field emitter array with integrated gate electrode 集成栅电极光控场发射阵列的研制
Toya Kera, N. Umeda, K. Iwami
A field emitter array (FEA) with integrated gate electrode was fabricated on a transparent substrate for optical emission control. An array consisting of about 30000 emitters is arranged in a 3-mm-diameter area on a quartz-glass substrate. I-V characteristics were measured and electron emission regime was confirmed as field emission from Fowler-Nordheim analysis. Emission current was enhanced with laser irradiation at the wavelength of 532 nm, and the threshold voltage for field emission was reduced by 43 %. The maximum current enhancement factor was 4.3×106. The result obtained from this study is expected to be applied for optically-controlled field emitter array and future high throughput electron beam lithography.
在透明衬底上制备了一种集成栅极的场射极阵列,用于光发射控制。在石英玻璃基板上,由约30000个发射器组成的阵列布置在直径为3mm的区域内。测量了I-V特性,并通过Fowler-Nordheim分析确认了电子发射模式为场发射。波长为532 nm的激光照射增强了发射电流,使场发射阈值电压降低了43%。最大电流增强因子为4.3×106。该研究结果有望应用于光控场发射阵列和未来的高通量电子束光刻。
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引用次数: 0
Research of periodic amorphous carbon composite films for MEMS IR source fabricated by magnetron sputtering 磁控溅射制备MEMS红外源周期性非晶碳复合薄膜的研究
A. Ming, Weibing Liu, Lingling Li, Xilong Sun, Xu Zheng, Weibing Wang, Qiu-lin Tan, J. Xiong, Dapeng Chen
In this work, we present a newly titanium-contained periodic amorphous carbon(a-C) composite films by magnetron sputtering process on silicon (100) substrate which has lower intrinsic compressive stress that can be used in electrical modulation pulsed MEMS infrared(IR) source for NDIR gas sensors. The fabrication process, results, performance and results analysis are then carried out.
本文在硅(100)衬底上采用磁控溅射工艺制备了一种新型含钛周期性非晶碳(a- c)复合薄膜,该薄膜具有较低的本征压应力,可用于NDIR气体传感器的电调制脉冲MEMS红外(IR)源。然后进行制造过程、结果、性能和结果分析。
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引用次数: 2
Fabrication of through silicon via with highly phosphorus-doped polycrystalline Si plugs for driving an active-matrix nanocrystalline Si electron emitter array 高掺磷多晶硅插头驱动有源矩阵纳米晶硅电子发射器阵列的通孔制造
N. Ikegami, Takashi Yoshida, A. Kojima, H. Miyaguchi, M. Muroyama, S. Yoshida, K. Totsu, N. Koshida, M. Esashi
Present advanced-process for the fabrication of through silicon via (TSV) with highly phosphorus-doped n++-polycrystalline Si plugs for driving an active-matrix nanocrystalline Si (nc-Si) electron emitter array was described. The resistance per one TSV was measured to be 150 Ω, and voltage drop at the TSV plug in a normal driving operation was sufficiently small to apply the diode current to the nc-Si layer. Electrons could be effectively injected into the nc-Si layer from the back-side n++-poly-Si through the TSV plugs, and were quasi-ballistically emitted through the surface Ti/Au electrode.
介绍了一种利用高磷掺杂n++-多晶硅插头驱动有源矩阵纳米晶硅(nc-Si)电子发射体阵列的先进工艺。测量到每一TSV的电阻为150 Ω,并且TSV插头在正常驱动操作中的压降足够小,可以将二极管电流施加到nc-Si层。电子可以从背面的n++-多晶硅通过TSV插头有效地注入到nc-Si层中,并通过表面的Ti/Au电极准弹道发射。
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引用次数: 0
Enriched semiconducting single wall nanotubes as back contact for CdTe solar cell 富半导体单壁纳米管作为CdTe太阳能电池的背触点
Bin Li, Hang Zhou, Hui Li, Xiangxin Liu
For CdS/CdTe solar cells with conventional Cu doped CdTe at the back contact, the diffusion of copper into CdS window layer is detrimental to the solar cell performance. In order to obviate this problem, single wall carbon nanotube thin films with enriched semiconducting ratio (95% S-SWNT) are applied to the CdS/CdTe device and their suitability as back contact materials are studied. We achieve solar cells with power conversion efficiency (PCE) of ~9.71% device using SWNT/Au back contact. Furthermore, the device with SWNT/Au electrode shows higher thermal stability when compared to devices with Cu/Au electrodes.
在cd /CdTe太阳能电池中,在背触点处传统的Cu掺杂CdTe,铜扩散到CdS窗口层对电池性能不利。为了解决这一问题,将富半导体比(95% S-SWNT)的单壁碳纳米管薄膜应用于CdS/CdTe器件,并对其作为背触点材料的适用性进行了研究。我们利用SWNT/Au背接触器件实现了功率转换效率(PCE)约9.71%的太阳能电池。此外,与使用Cu/Au电极的器件相比,使用SWNT/Au电极的器件表现出更高的热稳定性。
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引用次数: 1
Plasma half dicing based on micro-loading effect for ultra-thin LiNbO3 plate wave devices on Si substrate 基于微加载效应的硅衬底超薄LiNbO3板波器件等离子体半切
Y. Yunoki, M. Kadota, M. Moriyama, Shuji Tanaka
Ultra-wide band ladder filters with bandwidth of 41 to 51%, which fully cover the digital TV band, were fabricated using 0-th shear horizontal (SH0) mode plate wave in a (0°, 117.5-120°, 0°) LiNbO3 (LN) ultra-thin plate. A LN/cavity/Si wafer with a number of devices must be separated into chips as they can be mounted on a printed circuit board (PCB). When the wafer is separated using a dicing machine, the wafer must be protected from strong water showers because the LN ultra-thin plate of 0.5 to 0.6 μm thickness on a cavity is fragile. In this study, the authors developed a new separating (plasma half dicing) method using the micro-loading effect instead of the conventional blade dicing. This method enjoys the advantages of dry process, and no additional etching is needed, because the half dicing grooves are fabricated simultaneously with the device cavities. A chip filter mounted on a PCB after separation shows a good frequency characteristic similar to the one measured using a prober system before separation.
利用(0°,117.5 ~ 120°,0°)LiNbO3 (LN)超薄板中的第0剪切水平(SH0)模板波,制备了带宽为41 ~ 51%的全覆盖数字电视频带的超宽带阶梯滤波器。一个有许多器件的LN/腔/硅晶圆必须分离成芯片,因为它们可以安装在印刷电路板(PCB)上。使用切丁机分离晶圆时,由于空腔上0.5 ~ 0.6 μm厚度的LN超薄板易碎,因此必须保护晶圆免受强烈的淋浴。在本研究中,作者开发了一种新的分离方法(等离子体半切割),利用微载荷效应代替传统的刀片切割。该方法具有干法加工的优点,并且由于半切槽与器件腔体同时制作,不需要额外的蚀刻。分离后安装在PCB上的芯片滤波器显示出与分离前使用探头系统测量的频率特性相似的良好频率特性。
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引用次数: 0
Parallel actuation and independent addressing of many bubble microrobots 许多气泡微型机器人的并行驱动和独立寻址
M. A. Rahman, Julian Cheng, A. Ohta
Twenty-four bubble microrobots were opto-thermally actuated in parallel. The bubble microrobots were independently controlled by a computer-generated holographic (CGH) control system. This work demonstrates the actuation of many microrobots that are capable of performing an assigned task such as micro-assembly with increased throughput. To the best knowledge of the authors, these are the most microrobots independently actuated in parallel to date.
24个气泡微型机器人并行光热驱动。气泡微型机器人由计算机生成全息(CGH)控制系统独立控制。这项工作展示了许多微型机器人的驱动,这些机器人能够执行指定的任务,例如增加吞吐量的微型装配。据作者所知,这些是迄今为止独立并行驱动的最微型机器人。
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引用次数: 6
Robust multi-parameter sensing probe for water monitoring based on ALD-coated metallic micro-patterns 基于ald涂层金属微图的水监测鲁棒多参数传感探头
Ferdous Shaun, Massimo Pellegrino, W. Cesar, F. Marty, Zhifei Xu, M. Capo-Chichi, P. Basset, B. Lebental, T. Bourouina
We report on a multi-sensing probe for water network monitoring enabling simultaneous measurements of water electrical conductivity, flow-rate and temperature. A very simple fabrication process is used where all physical sensors are obtained only from micro-patterning of glass, combining platinum, gold. Further coating using Atomic Layer Deposition (ALD) is achieved for the purpose of reducing both electro-erosion and biofouling, while keeping the sensor's electrical and thermal functionalities. This is critical for long-term reliability of sensors immersed in water. The lateral size of each sensing elements does not exceed a few 100μm. This small footprint allowed implementing a redundancy strategy on the chip, not only for reliability purposes but also to accommodate for different measurement ranges based on scalable designs.
我们报告了一种用于水网监测的多传感探头,可以同时测量水的电导率、流速和温度。采用了一种非常简单的制造工艺,所有的物理传感器都是通过结合铂、金的玻璃微结构获得的。为了减少电侵蚀和生物污染,同时保持传感器的电和热功能,进一步使用原子层沉积(ALD)涂层。这对于浸入水中的传感器的长期可靠性至关重要。每个传感器的横向尺寸不超过几个100μm。这种小的占地面积允许在芯片上实现冗余策略,不仅是为了可靠性的目的,而且还适应基于可扩展设计的不同测量范围。
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引用次数: 3
Rapid thermal annealing for carbon nanotube thin film transistors by a double-themral-region furnace 碳纳米管薄膜晶体管的双热区炉快速热退火
Chun Chen, Yanyan Deng, Peijian He, M. Zhang
Determination of the annealing condition has always been critical and challenging for performance improvement of the carbon-based devices. In this paper, rapid thermal annealing (RTA) in hydrogen followed by rapid cooling down with a double-thermal-region movable furnace for carbon nanotube thin film transistors (CNT-TFTs) has been proved to be an effective method to improve device performance. After the post-treatment by RTA and rapid cooling down, off current of CNT-TFTs was reduced by 10-100 times, on/off current ratio was increased by almost 10 times, and mobility was increased by about 66%. It turns out that RTA treatment under 700 °C for 60 seconds resulted in the most significant improvement for CNT-TFT performance.
退火条件的确定一直是提高碳基器件性能的关键和挑战。在本文中,碳纳米管薄膜晶体管(CNT-TFTs)的氢快速热退火(RTA)和双热区可动炉快速冷却被证明是提高器件性能的有效方法。经过RTA后处理和快速冷却后,cnts - tft的关断电流降低了10-100倍,开关电流比提高了近10倍,迁移率提高了约66%。结果表明,在700°C下进行60秒的RTA处理可显著提高碳纳米管- tft的性能。
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引用次数: 0
Lamb wave resonators and resonator filters in periodical poled Z-cut LiTaO3 plate 周期性极化z切LiTaO3板的Lamb波谐振器和谐振器滤波器
M. Kadota, T. Ogami, Kansho Yamamoto, Yasuo Cho, Shuji Tanaka
An electric field distribution in a top electrode plane/periodical poled (PP) plate/bottom electrode plane looks like a cross-field model (by Smith) of an interdigital transducer (IDT) to generate a surface acoustic wave (SAW). Therefore, this structure has the possibility to generate an acoustic wave. This structure generates a SAW when the plate is thick, and a plate wave when the plate is thin. Although SAW resonators and resonator filters require grating reflectors at both sides of the IDT, previously reported devices composed of PP-plate on thick substrate don't include any grating reflectors, because they don't have electrode fingers. Therefore, their frequency responses are very weak. Proposing and applying effective edge reflections on the PP-plate instead of grating reflectors, authors fabricated Lamb wave resonators and resonator filters in PP Z-LiTaO3 plates. As a result, resonators with impedance ratio of 34 dB and resonator filters with a low loss of 2.4 dB and 3 dB bandwidth of 2.2% were obtained.
在上电极平面/周期极化(PP)板/下电极平面上的电场分布看起来像一个产生表面声波(SAW)的数字间换能器(IDT)的交叉场模型(史密斯)。因此,这种结构具有产生声波的可能性。当板厚时,这种结构产生声波,当板薄时产生板波。虽然SAW谐振器和谐振器滤波器需要在IDT的两侧安装光栅反射器,但之前报道的由厚基板上的pp板组成的器件不包括任何光栅反射器,因为它们没有电极指。因此,它们的频率响应非常弱。在PP- Z-LiTaO3板上提出并应用有效的边缘反射代替光栅反射,在PP- Z-LiTaO3板上制备了Lamb波谐振器和谐振器滤波器。得到阻抗比为34 dB的谐振器和低损耗为2.4 dB、3db带宽为2.2%的谐振器滤波器。
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引用次数: 0
期刊
2016 IEEE 11th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)
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