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1. 发明申请

WO2015085074A1 GRAPHENE NANOELECTRONIC HETERODYNE SENSOR FOR RAPID AND SENSITIVE VAPOUR DETECTION 审中-公开
标题翻译：用于快速和敏感的蒸气检测的石墨纳米电子异位传感器
公开(公告)号：WO2015085074A1
公开(公告)日：2015-06-11
申请号：PCT/US2014/068578
申请日：2014-12-04
申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN
发明人： ZHONG, Zhaohui , KULKARNI, Girish , REDDY, Karthik , FAN, Xudong
IPC分类号： G01L21/00 , B82B3/00 , C23C14/24
CPC分类号： G01N27/4141 , B01D53/025 , B01D2257/2064 , B01D2257/556 , B01D2257/70 , B01D2257/7022 , B01D2257/7027 , B82Y30/00 , G01N27/4146 , G01N27/4148
摘要： An improved sensing method is provided for rapid analyte detection. The method includes: applying an AC excitation signal to the channel region of the transistor; applying an AC drive signal to the transistor; delivering an analyte of interest to a channel region of a transistor; and monitoring a mixing current of the excitation signal and the drive signal through the transistor, where a change in the mixing current is indicative of the concentration of the analyte of interest.
摘要翻译：提供了一种改进的感测方法用于快速分析物检测。该方法包括：将AC激励信号施加到晶体管的沟道区; 将AC驱动信号施加到晶体管; 将感兴趣的分析物传送到晶体管的沟道区域; 以及监测通过晶体管的激发信号和驱动信号的混合电流，其中混合电流的变化指示感兴趣的分析物的浓度。

2. 发明申请

WO2023091400A1 DIRECT CURRENT NANOELECTRONIC SENSOR 审中-公开
公开(公告)号：WO2023091400A1
公开(公告)日：2023-05-25
申请号：PCT/US2022/049940
申请日：2022-11-15
申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN
发明人： ZHONG, Zhaohui , FAN, Xudong , ZANG, Wenzhe , LIU, Zhe , KULKARNI, Girish S. , ZHU, Hongbo , WU, You
IPC分类号： G01N27/414 , G01N27/416 , G01N33/00
摘要： Nearly all existing direct current (DC) chemical vapor sensing methodologies are based on charge transfer between sensor and adsorbed molecules. However, the high binding energy at the charge-trapped sites, which is critical for high sensitivity, significantly slows sensors' response and makes the detection of non-polar molecules difficult. By exploiting the incomplete screening effect of graphene, this disclosure demonstrates a DC graphene electronic sensor for rapid (sub-second) and sensitive (ppb) detection of a broad range of vapor analytes, including polar, non-polar, organic and inorganic molecules. Molecular adsorption induced capacitance change in the graphene transistor is revealed to be the main sensing mechanism. This work provides an avenue for a broad spectrum real-time gas sensing technology and serves as an ideal testbed for probing molecular physisorption on graphene.

3. 发明申请

WO2012031238A2 UNIFORM MULTILAYER GRAPHENE BY CHEMICAL VAPOR DEPOSITION 审中-公开
标题翻译：化学气相沉积法制备均匀的多层石墨烯
公开(公告)号：WO2012031238A2
公开(公告)日：2012-03-08
申请号：PCT/US2011/050396
申请日：2011-09-02
申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN , ZHONG, Zhaohui , LEE, Seunghyun , LEE, Kyunghoon
发明人： ZHONG, Zhaohui , LEE, Seunghyun , LEE, Kyunghoon
IPC分类号： C23C16/44 , C23C16/448 , H01L21/205 , C01B31/04 , C23C16/26
CPC分类号： H01L21/0262 , B82Y30/00 , B82Y40/00 , C01B32/184 , C01B32/186 , C01B2204/32 , C23C16/0209 , C23C16/26 , C23C16/45502 , C23C16/45557 , H01L21/02381 , H01L21/02425 , H01L21/02488 , H01L21/02527 , Y10T428/30
摘要： A method of producing uniform multilayer graphene by chemical vapor deposition (CVD) is provided. The method is limited in size only by CVD reaction chamber size and is scalable to produce multilayer graphene films on a wafer scale that have the same number of layers of graphene throughout substantially the entire film. Uniform bilayer graphene may be produced using a method that does not require assembly of independently produced single layer graphene. The method includes a CVD process wherein a reaction gas is flowed in the chamber at a relatively low pressure compared to conventional processes and the temperature in the reaction chamber is thereafter decreased relatively slowly compared to conventional processes. One application for uniform multilayer graphene is transparent conductors. In processes that require multiple transfers of single layer graphene to achieve multilayer graphene structures, the disclosed method can reduce the number of process steps by at least half.
摘要翻译：提供了通过化学气相沉积（CVD）制造均匀多层石墨烯的方法。该方法的尺寸仅受CVD反应室尺寸的限制，并且可缩放以在晶片级上产生多层石墨烯膜，其在基本上整个膜中具有相同数量的石墨烯层。均匀的双层石墨烯可以使用不需要装配独立制造的单层石墨烯的方法来生产。该方法包括CVD工艺，其中与常规工艺相比，反应气体以相对低的压力流入室中，并且与传统工艺相比，反应室中的温度此后相对缓慢降低。均匀多层石墨烯的一个应用是透明导体。在需要多层石墨烯转移以获得多层石墨烯结构的工艺中，所公开的方法可以将工艺步骤的数量减少至少一半。

4. 发明申请

WO2019032119A1 TWO-DIMENSIONAL MATERIAL BASED ION EXCHANGE MEMBRANE SENSORS 审中-公开
公开(公告)号：WO2019032119A1
公开(公告)日：2019-02-14
申请号：PCT/US2017/046523
申请日：2017-08-11
申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN
发明人： KULKARNI, Girish , FAN, Xudong , ZHONG, Zhaohui , PANDEY, Ayush , ZANG, Wenzhe
IPC分类号： G01N27/407 , G01N27/49 , G01N27/414
摘要： Electrochemical sensors for the detection of select analytes are provided. The electrochemical sensors include a barrier layer having a substantially uniformed thickness disposed between a sensing layer and an ion exchange membrane. The barrier layer includes a two-dimensional nanomaterial. The barrier layer has a thickness of less than or equal to about 1 nm. The sensing layer has a thickness of less than or equal to about 10 nm. The sensing layer generates ions in response to select analytes. The barrier layer allows the generation ions to pass therethrough and travel into the ion exchange membrane. The barrier layer acts as a physical barrier to contaminants and larger molecules.

5. 发明申请

WO2012006621A2 CARBON NANOTUBE HYBRID PHOTOVOLTAICS 审中-公开
标题翻译：碳纳米管混合光伏
公开(公告)号：WO2012006621A2
公开(公告)日：2012-01-12
申请号：PCT/US2011/043562
申请日：2011-07-11
申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN , DISSANAYAKE, Nanditha , ZHONG, Zhaohui
发明人： DISSANAYAKE, Nanditha , ZHONG, Zhaohui
IPC分类号： H01L51/44 , H01L51/48 , B82Y40/00 , B82Y15/00
CPC分类号： B82Y30/00 , B82Y10/00 , H01L51/0036 , H01L51/0048 , H01L51/4253 , Y02E10/549
摘要： Systems, methods and devices for the efficient photocurrent generation in single- or multi-walled carbon nanotubes, which includes (SWNTs)/poly [3- hexylthiophene-2,5-diyl] (P3HT) hybrid photovoltaics, and exhibit the following features: photocurrent measurement at individual SWNT/P3HT heterojunctions indicate that both semiconducting (s-) and metallic (m-) SWNTs function as excellent hole acceptors; electrical transport and gate voltage dependent photocurrent indicate that P3HT p-dopes both s-SWNT and m-SWNT, and exciton dissociation is driven by a built-in voltage at the heterojunction. Some embodiments include a mm2 scale SWNT/P3HT bilayer hybrid photovoltaics using horizontally aligned SWNT arrays, which exhibit greater than 90% effective external quantum efficiency, among other things, which advantageously provide carbon nanomaterial based low cost and high efficiency hybrid photovoltaics.
摘要翻译：包括（SWNTs）/聚[3-己基噻吩-2,5-二基]（P3HT）混合光伏在单壁或多壁碳纳米管中有效的光电流产生的系统，方法和装置，并且具有以下特征：单个SWNT / P3HT异质结的光电流测量表明半导体（s-）和金属（m-）SWNTs都用作优异的空穴受体; 电传输和栅极电压依赖性光电流表明P3HT p掺杂s-SWNT和m-SWNT，并且激子解离由异质结的内置电压驱动。一些实施例包括使用水平对准的SWNT阵列的mm2尺度的SWNT / P3HT双层混合光伏，其显示出大于90％的有效外部量子效率，其有利地提供基于碳纳米材料的低成本和高效率混合光伏。

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