scholarly journals Simultaneous voltage and calcium imaging and optogenetic stimulation with high sensitivity and a wide field of view

2019 ◽  
Vol 10 (2) ◽  
pp. 789 ◽  
Author(s):  
Cuong Nguyen ◽  
Hansini Upadhyay ◽  
Michael Murphy ◽  
Gabriel Borja ◽  
Emily J. Rozsahegyi ◽  
...  
2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Zakaria El Jaouhari ◽  
Youssef Zaz ◽  
Salah Moughyt ◽  
Omar El Kadmiri ◽  
Zakaria El Kadmiri

A design of a solar tracker with a new tracking method based on computer vision techniques is presented in this paper. The proposed method extracts the sun position (orientation θ, elevation φ) in real time from hemispherical sky images using a processing techniques and then drives a pair of motors to move solar panels (or heliostats) toward the sun. To ensure a wide field of view, a camera equipped with a fisheye lens is used to acquire whole sky images. The advantages of such a system are the high sensitivity to brightness compared to traditional photosensors-based trackers. Thus, the system becomes more efficient and able to determine the sun position even during cloudy days. It also operates independently of time and position which makes it reliable in case of mobile solar stations, contrary to systems based on astronomical equations.


Author(s):  
M. G. Lagally

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.


2020 ◽  
Vol 13 (6) ◽  
pp. 1-9
Author(s):  
XU Hong-gang ◽  
◽  
HAN Bing ◽  
LI Man-li ◽  
MA Hong-tao ◽  
...  

2012 ◽  
Vol 100 (13) ◽  
pp. 133701 ◽  
Author(s):  
Hewei Liu ◽  
Feng Chen ◽  
Qing Yang ◽  
Pubo Qu ◽  
Shengguan He ◽  
...  

Lab on a Chip ◽  
2010 ◽  
Vol 10 (7) ◽  
pp. 824 ◽  
Author(s):  
Ahmet F. Coskun ◽  
Ting-Wei Su ◽  
Aydogan Ozcan

2018 ◽  
Vol 57 (15) ◽  
pp. 4171 ◽  
Author(s):  
Shingo Kashima ◽  
Masashi Hazumi ◽  
Hiroaki Imada ◽  
Nobuhiko Katayama ◽  
Tomotake Matsumura ◽  
...  

Optik ◽  
2016 ◽  
Vol 127 (14) ◽  
pp. 5636-5646 ◽  
Author(s):  
Hyungtae Kim ◽  
Jaehoon Jung ◽  
Joonki Paik

Sign in / Sign up

Export Citation Format

Share Document