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High-Definition Diagnostic Ultrasound Technology Constructed on Nanoscale Level

By MedImaging International staff writers
Posted on 13 Sep 2010
British scientists and engineers have constructed the world's smallest ultrasonic transducers capable of generating and detecting ultrasound. The groundbreaking transducers, which are orders of magnitude smaller than current systems, are so tiny that up to 500 of the smallest could be positioned across the width of one human hair.

While at an early stage these devices offer a multitude of possibilities for imaging and measuring at scales a thousand times smaller than traditional ultrasound technology. They can be made so small they could be placed inside cells to perform intracellular ultrasonics. They can produce ultrasound of such a high frequency that its wavelength is smaller than that of visible light. Hypothetically, they make it possible for ultrasonic images to take finer pictures than the most powerful optical microscopes.

The research, conducted by the Applied Optics Group in the division of electrical systems and optics at the University of Nottingham (UK), has been considered so potentially innovative that in 2009 it was awarded a GBP 850,000 five-year Platform Grant by the Engineering and Physical Sciences Research Council (EPSRC; Swindon, UK) to develop advanced ultrasonic techniques. The team has also been supported by additional funding of GBP 350,000 from an EPSRC grant to strengthen aerospace research.

Dr. Matt Clark, of the Applied Optics Group, said, "With the rise of nanotechnology you need more powerful diagnostic tools, especially ones that can operate nondestructively and ones which can be used to access the mechanical and chemical properties of the samples at this scale. These new transducers are hugely exciting and bring the power of ultrasonics to the nanoscale.”

The ultrasonic transducers are made up of sandwich or shell-like structures painstakingly engineered to possess both optical and ultrasonic resonances. When hit by a pulse of laser, light they are set ringing at high frequency, which launches ultrasonic waves into the sample. When excited by ultrasound, the transducers are very slightly deformed and this changes their optical resonance, which are detected by a laser.

The devices can be constructed either by micro/nano lithography techniques similar to those used for microchips or by molecular self-assembly in which the transducers are constructed chemically. Possibly the most recognizable application of ultrasonics is medical imaging but it is also widely used in engineering applications and for chemical sensing. These tiny transducers open up the possibility of using these techniques on the smallest scales, for instance, inside cells and on nano-engineered components.

Dr. Clark noted, "Imagine imaging inside cells in the same way that ultrasonic imaging is performed inside bodies. Theoretically, we could get higher resolution with the nano-ultrasonics than you can with optical microscopes and the contrast would be very interesting. In addition, the transducers can be made into highly sensitive chemical sensors ultrasonics SAW sensors are used on the normal scale for electronic noses this would allow you to distribute chemical sensors in tissue or in paint so you could make paint with chemical sensors to detect corrosion or explosives in it.”

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91 (30.040740966797): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (27.894973754883): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (29.087066650391): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (28.133392333984): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (28.848648071289): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (27.179718017578): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (33.140182495117): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (40.054321289062): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (37.193298339844): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (42.915344238281): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (80.108642578125): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
105 (42.915344238281): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
106 (50.067901611328): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294731098 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (48.87580871582): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294731098 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (77.009201049805): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
109 (47.206878662109): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
110 (46.968460083008): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294731098 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (495.19538879395): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294731098 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (602.96058654785): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
113 (340.93856811523): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
114 (79.870223999023): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
115 (47.206878662109): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
116 (45.061111450195): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
117 (37.908554077148): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
118 (43.869018554688): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
119 (36.954879760742): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
120 (61.03515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
121 (40.054321289062): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
122 (327.11029052734): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 20502.090454102): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
124 (516.17622375488): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294731098 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294731098 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (133.99124145508): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
126 (37.193298339844): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
127 (35.04753112793): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
128 (30.994415283203): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
129 (51.021575927734): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
130 (30.040740966797): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
131 (29.087066650391): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
132 (28.848648071289): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
133 (28.848648071289): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
134 (39.100646972656): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
135 (500.91743469238): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (411.9873046875): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (45.061111450195): SELECT name FROM jos_deeppockets WHERE id=214
138 (30.994415283203): SELECT name FROM jos_deeppockets WHERE id=214
139 (570.05882263184): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))214((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (478.02925109863): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))214((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (65.088272094727): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
142 (43.869018554688): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
143 (!!!!! 8770.9426879883): TRUNCATE TABLE jos_trademed_module
144 (92.029571533203): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294731098 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (56.028366088867): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294731098 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (516.17622375488): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (51.975250244141): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (59.127807617188): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
149 (46.014785766602): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
150 (!!!!! 1312.0174407959): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
151 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
152 (49.829483032227): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
153 (40.054321289062): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294731098 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294731098 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (36.001205444336): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=214 or channel_id is null)
155 (33.140182495117): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=214 or channel_id is null)
156 (34.809112548828): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (68.902969360352): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
158 (44.107437133789): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294731098 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294731098 AND published='1' LIMIT 1
159 (57.93571472168): select jos_twitters.link from jos_twitters where cat=10
160 (42.915344238281): select jos_facebook.link from jos_facebook where cat=10
161 (32.901763916016): select jos_google_plus.link from jos_google_plus where cat=10
162 (32.186508178711): select jos_linkedin.link from jos_linkedin where cat=10
163 (307.08312988281): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14202,14203)
164 (!!!!! 1105.0701141357): insert into jos_banners_delta values (14202,'2025-08-13 09:27:03','216.73.216.186','view'),(14203,'2025-08-13 09:27:03','216.73.216.186','view')