"An interdigital transducer (IDT)（交差指型変換器、すだれ状電極）is a device that consists of two interlocking comb-shaped arrays of metallic electrodes (in the fashion of a zipper). These metallic electrodes are deposited on the surface of a piezoelectric substrate, such as quartz or lithium niobate, to form a periodic structure." (Inerdigital transducer, Wikipedia)
弾性表面波を利用したデバイス
US4491761
"Referring now to FIG. 1, a planar piezoelectric deflector 8, in accordance with the invention, comprises a single piezoelectric substrate 10 on which there is disposed a pattern of interdigital electrodes（櫛形、櫛型、くし型電極） including a first set of commonly connected electrodes 12 and a second set of commonly connected electrodes 13, the electrodes 12, 13 being interspersed alternately with one another."
"interdigital transducer"を「すだれ状電極」と言う場合もあるらしい。
US5855063
"The metal layer 22 will preferably comprise a flash coat of electrodeposited copper deposited from any of a variety of commercially available such copper plating baths (e.g., copper sulfate, copper fluoroborate, copper cyanide)."
US20100294333
"If a high-conductivity metal other than silver is used for the thick metallization layer, a final flash coat of silver may be used to create a high-reflectivity surface coating in order to improve light reflection and trapping into the 3-D cells (by the emitter metallization contact)."
US9408219
"In general, a need exists for a mobile device, such as a smartphone, that may determine when wireless network congestion no longer exists (either based on notification from a wireless network or as a result of monitoring and analysis by the device) and automatically, without any additional context regarding other users or the network and independently of any other device, re-enable requests by the mobile device to establish data communications, for example, in a manner that may limit any additional network congestion due to the additional requests."
US9408214
"Thus, improved systems, methods, and devices for protection and bandwidth selection for downlink and uplink frequency division multiple access communications are desired."
US9408177
"There is a significant challenge for system architects and mobile operator providers to maintain a stable/reliable network environment and to provide optimal performance for their subscribers."
US9408171
"Improved systems, methods, and devices for coordinating transmitting and sending communications within a wireless network are desired."
US9408143
"Thus, there is a need to develop systems and techniques to intelligently manage mobile device battery use."
US940706
"For example, if a mobile device can detect that a user is engaged in a vigorous activity, it may be useful to direct incoming telephone calls immediately to voicemail so as not to distract the user. In another example, if it can be detected that a mobile device is in a user's purse or pocket, it may be advantageous to disable a display so as not to waste battery resources."
US9393918
"Accordingly, it is desirable to provide alternative methods and systems for implementing MirrorLink server type functionality without requiring a special consumer electronics device to be present within the vehicle. It would also be desirable to provide alternative methods and systems for executing applications, which would otherwise traditionally be executed at a consumer electronics device, to provide content that can be presented via a user interface within the vehicle."
US8802525
While some level of etching may continue to occur at an etch stop, because of the order of magnitude differences（桁違いの相違）in etch rate (such as the example in FIG. 3), the etching is considered to have substantially stopped.
An order-of-magnitude difference（一桁分の相違）between two values is a factor of 10. For example, the mass of the planet Saturn is 95 times that of Earth, so Saturn is two orders of magnitude more massive than Earth. Order-of-magnitude differences are called decades when measured on a logarithmic scale.("Order of magnitude", Wikipedia)
追記10AUG2016
"Tuition at public colleges varies by orders of magnitude（ケタ違い）." International New York Times, 10AUG2016, page 20, "What $100 can buy, state by state in U.S."
