Hi Friends,

Even as I launch this today ( my 80th Birthday ), I realize that there is yet so much to say and do. There is just no time to look back, no time to wonder,"Will anyone read these pages?"

With regards,
Hemen Parekh
27 June 2013

Now as I approach my 90th birthday ( 27 June 2023 ) , I invite you to visit my Digital Avatar ( www.hemenparekh.ai ) – and continue chatting with me , even when I am no more here physically

Tuesday, 5 June 2018

RE: TENG / Triboelectric Nanogeneratot

Dear Qiu,

Thought following might interest you :

Super-elastic electronic fibre paves way for smart clothes



Warm Regards,

Hemen Parekh

+91 98675 50808

From: Hemen Parekh [mailto:hcp@recruitguru.com]
Sent: 07 May 2018 16:31
To: Qiu Jiang
Cc: hcp@recruitguru.com
Subject: RE: TENG / Triboelectric Nanogeneratot

Dear Qiu,


Following might interest you :






Warm Regards,

Hemen Parekh


+91 98675 50808

From: Qiu Jiang [mailto:qiu.jiang@kaust.edu.sa]
Sent: 14 April 2018 00:05
To: Hemen Parekh
Subject: Re: TENG / Triboelectric Nanogeneratot

Correct, to continuously power the RFID over a long period, integrating solar cell or a triboelectric nanogenerator with the supercapacitor is a good option, and we are doing lots of research to optimize and stabilize the performance.


On Fri, Apr 13, 2018 at 8:48 AM, Hemen Parekh <hcp@recruitguru.com> wrote:
Dear Qiu,

Many thanks for your very prompt – and clear – reply

India’s Rs 2,000 currency note is 110 micron thick

And 1 cm sq area for embedding microsupercapacitor , should not pose any problem

Extremely thin RFID sensors are also available – and getting as cheap as few cents a piece

But since the charge from microsupercapacitor can power that RFID for only 1 hour , it may not be of much use if that pile of currency notes is just lying in a cabinet / vault

Although, if that currency note is lying in a wallet / purse and handled , now and then ( in order to make “ cash payments “ ) , then I suppose it will build up the charge in microsupercapacitor and power the RFID

Am I correct ?


Warm Regards,

Hemen Parekh
+91 98675 50808

From: Qiu Jiang [mailto:qiu.jiang@kaust.edu.sa]
Sent: 13 April 2018 11:01
To: Hemen Parekh
Cc: Jr-Hau He
Subject: Re: TENG / Triboelectric Nanogeneratot

Dear Hemen:

The typical power consumption of RFID is ~10 µW, and Energy density of a microcapacitor can easily go 1 mWh/cm3, which means a microsupercapacitor with 1 cm3 volumn can power the RFID for 100 h. As you said, you want some thin devices, take 100 µm thickness for example, a microsupercapacitor with 1cm2 area and 100 µm thickness can power the RFID for 1h.

Also, you don't need to continuously power the RFID, thus it is practical to do so.




Regards
Qiu

On Fri, Apr 13, 2018 at 6:56 AM, Hemen Parekh <hcp@recruitguru.com> wrote:
Dear Qiu / Jr-Hau He,


I read about your research on this subject at :




Congratulations on a discovery of ( possibly ) , immense economic consequences


Here is what I have in mind :


Corruption is the biggest economic evil , which continues to fuel “ inequity “ among the rich and the poor


Corruption starts with tax evasion and subsequent use of Black Money generated – most of which , is in the form of high denomination currency notes , piling up in the cabinets and vaults of the tax-evaders


Currently , there is no technology to trace / track such piles of hidden high denomination currency notes , although there has been lots of “ talk “ on embedding such currency notes with RFID sensors , to enable tracking


Some months back , an officer of the Australian Government announced intention to do just that


I have , myself , been urging the Indian Government for over 2 years , to embed RFID in newly printed notes  of Rs 500 and Rs 2000


But , I understand , RFID need a source of power , in order to “ announce “ its location


And , so far , it has not been possible to embed a battery within the thin currency notes , which can power RFID


Is it possible that one of these days , your research can supply such power to embedded RFID  ?


I would highly appreciate your views on this



With Regards,


hemen  parekh / Mumbai




( M ) +91 - 98,67,55,08,08




--

Qiu Jiang
Ph.D. Student, King Abdullah University of Science and Technology, SA,
Materials Science and Engineering, 
Office: Bldg.3, level 3, 3203-WS17, Mobile phone: +966 (0)54 670 1529


This message and its contents, including attachments are intended solely for the original recipient. If you are not the intended recipient or have received this message in error, please notify me immediately and delete this message from your computer system. Any unauthorized use or distribution is prohibited. Please consider the environment before printing this email.



--

Qiu Jiang
Ph.D. Student, King Abdullah University of Science and Technology, SA,
Materials Science and Engineering, 
Office: Bldg.3, level 3, 3203-WS17, Mobile phone: +966 (0)54 670 1529


This message and its contents, including attachments are intended solely for the original recipient. If you are not the intended recipient or have received this message in error, please notify me immediately and delete this message from your computer system. Any unauthorized use or distribution is prohibited. Please consider the environment before printing this emai

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