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Monolithic ultrasound fingerprint sensor

Microsystems & Nanoengineering 2017年第1期3卷 37-44页

作者： Xiaoyue jiang Yipeng Lu Hao-Yen Tang julius M.Tsai Eldwin j.Ng michael j.daneman Bernhard E.Boser David A.Horsley Department of Mechanical Engineering University of CaliforniaBerkeleyCA 94720USA Department of Mechanical and Aerospace Engineering University of CaliforniaDavisCA 95616USA Department of Electrical Engineering and Computer Sciences University of CaliforniaBerkeleyCA 94720USA Invensense Inc. San JoseCA 95110USA

This paper presents a 591×438-DPI ultrasonic fingerprint *** sensor is based on a piezoelectric micromachined ultrasonic transducer(PMUT)array that is bonded at wafer-level to complementary metal oxide semiconductor(CMOS)signal processing electronics to produce a pulse-echo ultrasonic imager on a *** meet the 500-DPI standard for consumer fingerprint sensors,the PMUT pitch was reduced by approximately a factor of two relative to an earlier *** conducted a systematic design study of the individual PMUT and array to achieve this scaling while maintaining a high *** resulting 110×56-PMUT array,composed of 30×43-μm^(2) rectangular PMUTs,achieved a 51.7% fill-factor,three times greater than that of the previous *** with the custom CMOS ASIC,the sensor achieves 2 mV kPa^(−1) sensitivity,15 kPa pressure output,75μm lateral resolution,and 150μm axial resolution in a 4.6 mm×3.2 mm *** the best of our knowledge,we have demonstrated the first MEMS ultrasonic fingerprint sensor capable of imaging epidermis and sub-surface layer fingerprints.

关键词： piezoelectric micromachined ultrasonic transducer(PMUT) fingerprint sensors ultrasound

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小儿阑尾破裂伴炎性肿块或脓肿的非手术处理:出现阑尾钙化结石提示阑尾炎复发

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世界核心医学期刊文摘（儿科学分册） 2006年第4期2卷 30-31页

作者： Ein S.H. Langer j.C. daneman A. 余晓梅 Division of General Surgery Hospital for Sick Children Toronto Ont. M5G 1X8 Canada

Aim of Study: The aim of this study was to determine if the presence of an appendicolith is associated with an increased risk for recurrent appendicitis after nonoperative treatment of pediatric ruptured appendix with inflammatory mass or abscess. Methods: Ninety-six pediatric patients (52 girls, 44 boys), aged 16 months to 17 years (average, 7 years), were managed between 1980 and 2003. All were treated nonoperatively with intravenous triple antibiotics for 5 to 21 days. All children had at least a 2- year follow-up. This study was approved by the hospital research ethics board. Main Results: Six children (6% ) who became worse and 41 (46% ) who had an interval appendectomy were eliminated from the study. The other 49 patients comprised the study group and received no further treatment. Twenty-eight (57% ) had no recurrence, and 21 (43% ) had a recurrence within 1 month to 2 years (average, 3 months). In the study group, 31 (63% ) children had no appendicolith on radiological imaging and 18 (37% ) had. Presence of an appendicolith was associated with a 72% rate of recurrent appendicitis compared with a recurrence rate of 26% in those with no appendicolith (χ 2 test, P < .004). Conclusion: We conclude that the patients with appendicolith should have an interval appendectomy.

关键词：炎性肿块阑尾切除术复发率伦理委员会危险增加

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膈的原发性生殖细胞瘤

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世界核心医学期刊文摘（儿科学分册） 2005年第9期1卷 27-27页

作者： Traubici j. daneman A. Hayes-jordan A. Fecteau A. 郭战宏 Department of Diagnostic Imaging The Hospital for Sick Children Toronto Ont. Canada Dr.

The authors present a case of a 2-year-old boy with an abdominal mass, which was later found to be a yolk sac tumor arising from the diaphragm. To the authors’ knowledge there has been only 1 previous report of a germ cell tumor arising from the diaphragm. This case illustrates the imaging findings in this rare tumor and how it could be confused with a primary liver neoplasm.

关键词：生殖细胞瘤肝脏肿瘤卵黄囊瘤腹部包块影像学检查

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早期发生的严重糖尿病相关性微血管并发症

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世界核心医学期刊文摘（儿科学分册） 2005年第2期1卷 41-41页

作者： Hamilton j. Brown M. Silver R. daneman D. 贺莉 Dr.Division of EndocrinologyHospital for Sick Children555 University Ave TorontoOnt.M5G 1X8Canada

1例患有1型糖尿病的16岁女孩,虽然血糖控制得很好,但在1个月内发展成疼痛性外周神经疾病,1年内发展成增生性视网膜病。

关键词：增生性视网膜病疼痛性外周神经

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