even more scary... Nano went up few times before - 1985 (my time) -  
nano for semi - solar cell for example and MQW, 1990- nano for  
optical - light emitting and quantum dots, 2000, and current wave...  
stability on large surface area stuff is always tricky, with tight  
curvature even more... thx for the interesting paper.  engineering  
got crack at it early, followed by physicists. I guess it is just  
fair for chemists turn to find it out themselves how far it can push  
it (or get funding for hot topic).  (off topic, for some strange  
reason, I am no longer put that much faith in "Nature" starting,  
around 3-4 years back... getting old, brain power deficiency is  
showing more and more).
hopefully, the scary cap is not used for those stored for years and  
used once heavy weight (with land, air and sea capability)...Let me  
sleep easy at night (sometimes, in day light too - except World  
Cup... wake me up next game;-).
jk

On Jul 18, 2018, at 10:13 PM, Dennis Fritz wrote:

> NTC - Yep, you EEs keep on thinking you are in charge.   Meanwhile, my
> minions and I will keep on sneaking up on you - "The future of  
> electronics
> is chemical"
> https://phys.org/news/2018-07-future-electronics-chemical.html
>
> On Wed, Jul 18, 2018 at 7:22 PM Yuan-chia Joyce Koo <[log in to unmask]>
> wrote:
>
>> that's scary.
>> On Jul 18, 2018, at 11:48 AM, John Maxwell wrote:
>>
>>> High dielectric constant ceramic capacitors all exhibit aging due
>>> to the crystal structure changing from ferroelectric (tetragonal or
>>> diamond) to paraelectric (cubic) structures. Higher the dielectric
>>> constant (k) and the thinner the dielectric the more rapidly the
>>> parts age or lose capacitance.
>>>
>>> John
>>>
>>>
>>> Sent from my iPhone
>>>
>>>> On Jul 18, 2018, at 11:10 AM, Guy Ramsey <[log in to unmask]>
>>>> wrote:
>>>>
>>>> Well, I'll Be.  I cooked them at 150C for an hour and they measure
>>>> 100uF
>>>> I learned something today.
>>>>
>>>>> On Wed, Jul 18, 2018 at 8:08 AM <[log in to unmask]> wrote:
>>>>>
>>>>> Guy,
>>>>>
>>>>> Read this and try putting the parts through their Curie point and
>>>>> test
>>>>> them again.  We have seen this on some parts here.
>>>>>
>>>>> https://www.johansondielectrics.com/ceramic-capacitor-aging-made-
>>>>> simple
>>>>>
>>>>> Drew
>>>>>
>>>>> -----Original Message-----
>>>>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Guy Ramsey
>>>>> Sent: Wednesday, July 18, 2018 7:00 AM
>>>>> To: [log in to unmask]
>>>>> Subject: [TN] capacitor measurement
>>>>>
>>>>> I got pulled into a Receiving Inspection problem. Our test
>>>>> instrument, an
>>>>> old HP 4192A impedance meter, and a newer Instek 6020 tell us
>>>>> that our X5R
>>>>> capacitors are out of spec.
>>>>> A 100uF, 10%, 6.3V capacitor measures between 25% and 30% below  
>>>>> the
>>>>> nominal value.  The instruments have Kelvin probes and are zero
>>>>> calibrated
>>>>> at frequrency, 120Hz the test waveform is 500mV rms.
>>>>> Does anyone have any advise?
>>>>>
>>